Chapter X: Xanthic oxide in guano, xlix, 200 (1)

Xanthine, _Unger_, xlix, 391.

Xanthite, a new mineral, _W. W. Mather_, xviii, 359^f, [Idocrase.] ----, formula from the analysis, _J. J. Berzelius_, xxvi, 388.

Xanthium maculatum, memoir on, _C. S. Rafinesque_, i, 151.

Xanthogen, discovery of, vii, 377.

_Xavier, F._, death of, xxiv, 194.

Xyloidine, _H. Braconnot_, xxviii, 131.

Y.

Yale College Observatory, latitude and longitude of, xxxiv, 309. ---- ----, geological position of, vii, 20. ---- ----, Report of the Faculty on a course of liberal education, xv, 297. ---- ---- Cabinet, presents to, xxvii, 381, 382. ---- ---- Library, donation to, xxvii, 184. ---- ----, Trumbull Gallery of Paintings at, xxxix, 213.^f ---- ----, donation of shells to, xxxix, 195.

Yale Natural History Society, xxx, 187; xxxiv, 397.

Yard, English, as compared with the French metre, xxi, 382.

_Yarrell, W._, notice of the British Fishes of, xxxvii, 167. ----, on Osmerus Hebridicus, xxxv, 312. ----, notice of, xxxvii, 167.

Yeast, mode of making, vii, 378; x, 387.

Yenite, in Connecticut, viii, 59. ----, in Rhode Island, vii, 251; viii, 231.

_Yelloly_, on an acoustic instrument, xxxv, 313.

Yellow copper ore, see _Copper, sulphuret of_. ---- wood, iii, 44.

Yew tree, longevity of, xxix, 353; xxxi, 358. ---- ----, ----, _J. E. Bowman_, xxxi, 358.

Yorkshire Philosophical Society, xxi, 168. ----, Geology of, by _J. Phillips_, noticed, xxi, 1.

_Young, A._, life and character of N. Bowditch, xxxv, 1.

_Young, J. R._, Elements of Geometry, xxv, 206.

_Young, G._, antiquity of organic remains, xxxv, 308.

_Young, T._, memoir of, xxii, 232.

_Young, Dr._, cabinet of, at Edenville, N. Y., for sale, xxviii, 400;
xxxvi, 393.

Yttro-cerite in Massachusetts, _E. Hitchcock_, xlv, 331; xlvii, 351, 353. ----, stated to occur in New Jersey, vi, 379.

Z.

Zabians, remarks on the idolatry and philosophy of, _J. W. Draper_,
xxviii, 201.

_Zabriskie, J. B._, experiments on the induction of metallic coils, xxxii, 308.^f ----, model of an electro-magnetic engine, xxxii, 313.^f ----, construction of galvanic magnets, xxxvi, 124.^f ----, electro-magnetic rotations, xxxvi, 129.^f

Zacatecas, mines of, xxiv, 230.

Zach, Baron de, some account of, xvi, 209; xxiv, 194.

Zaffre, new mode of preparing, xxviii, 147.

Zamia, fossil fruits of, _G. A. Mantell_, xlv, 401. ----, sussexiensis, xlv, 401.

Zanesville Atheneum, cabinet of, xxv, 229; xxxi, 79. ----, coal formations, iii, 5; xxv, 228. ----, remarks on, xxv, 228.

_Zantedeschi, F._, memoirs of, on the electrotype, noticed, xliii, 390.

Zeolite, recent formation of, xx, 382.

Zeolites, order of superposition in amygdaloidal cavities, xlix, 59. ----, not usually formed at the formation of the containing rock, _J. D. Dana_, xlv, 116.

Zeolitic minerals, origin of, _J. D. Dana_, xlix, 52. ---- ----, of Bergen Hill, N. J., xl, 69; xliv, 54.^f

Zeuglodon, _R. Owen_, xxxvii, 231. ----, not a reptile, _R. Owen_, xxxix, 204. ----, geognostic position of, xxxviii, 381. ----, skeleton of, _S. B. Buckley_, xliv, 409. ----, skeleton of, obtained by A. C. Koch, xlix, 218.

Zeus crinitus, _S. L. Mitchill_, xi, 144.^f

Zinc, action of dilute sulphuric acid on, xix, 372. ---- blende, see _Blende_. ----, equivalent of, xlviii, 187. ----, separation of, from manganese, xlvii, 194; xlviii, 187. ----, as a covering for buildings, _A. Caswell_, xxxi, 248. ----, ibid, _L. D. Gale_, xxxii, 315. ----, ore of, containing iodine, xvi, 389. ----, biseleniuret of, xviii, 391. ---- and ammonia, carbonate of, xlix, 200. ---- mines of Franklin, N. Jersey, _F. Alger_, xlviii, 252.^f ----, carbonate of, or calamine in Missouri, xii, 376. ----, ----, in Michigan, xli, 185. ----, silicate of, or electric calamine in Michigan, xli, 185. ----, ----, in Virginia, xliii, 169. ---- ores of New Jersey, analyses of, ii, 319. ---- ---- ----, (Franklinite) reduction of, v, 242. ----, red oxide of, v, 242. ----, ---- ----, analysis of, _A. A. Hayes_, xlviii, 260. ----, oxide of, or Ancramite, _J. Torrey_, v, 235, 399. ----, ----, ibid, identical with cadmia and of furnace origin, vi, 180. ----, ----, at Ancram, N. Y., _J. Torrey_, v, 235. ----, sulphuret of, see _Blende_.

Zipaquera in New Grenada, salt works of, xxxii, 89.

Zircon, fusion of, ii, 292. ----, from Vermont, _C. U. Shepard_, xvii, 358.^f ---- crystals, tesselated, in New York, xlvi, 36.^f ----, of Buncombe Co., North Carolina, _C. U. Shepard_, xiii, 392.^f ----, in Connecticut, vi, 220. ----, in Maine, xviii, 297. ----, in New York, v, 30; ix, 41; xvii, 196; xxi, 325; xlvi, 36.^f ----, in North Carolina, iii, 229; iv, 192; v, 271, 401; xiii, 392.^f ----, in Pennsylvania, viii, 239; ix, 45; x, 219, 221; xiv, 5, 13, 17. ----, in Vermont, xvii, 358.^f

Zirconium, how obtained, ix, 377.

Zizia pinnatifida, xlv, 175.

Zodiac of Denderah, removed to France, v, 191; vi, 200.

Zodiacal light, (?) remarks on, xv, 62^f, 364.

Zodiacal light, observations on, _A. D. Bache_, xxvii, 335. ---- ----, ----, _D. Olmsted_, xxvii, 416; xxix, 378; xxxiii, 390. ---- ----, ----, Aug. 1840, _E. C. Herrick_, xxxix, 331; --Nov. 1842, xliv, 209. ---- ----, observations on the cause of, xlii, 395.

Zoisite, in Connecticut, ii, 240; vi, 223; xii, 161. ----, in Massachusetts, x, 18; xiv, 216. ----, in New Hampshire, viii, 235. ----, in Pennsylvania, xiv, 9, 17. ----, in Rhode Island, viii, 231. ----, in Vermont, iv, 276; vi, 223.

Zoological nomenclature, notice of the Report of the British Association on, and of the Nomenclator Zoologicus of L. Agassiz, by _A. A. Gould_, xlv, 1, 11. ---- ----, remarks on, _S. S. Haldeman_, xlvi, 18. ---- notices, on the Catskill Mountains, _J. Pierce_, vi, 86. ---- weather glass, xvii, 187. ---- writings of C. S. Rafinesque, notice of, _S. S. Haldeman_, xlii, 280.

ZOOLOGY--_Mammalia_.

Mammalia, distinctions of under jaws of, from those of Saurians,
xxxvii, 229.
----, fossil, in Great Britain, xlvii, 186.
----, ---- vertebrated animals of the crag of Norfolk and Suffolk,
xxxi, 339.
----, North American, _J. Richardson_ on, xxxi, 343, 356, 376.
---- of New York, number of, _J. E. DeKay_, xlv, 398.
---- and birds, in the Fulton market, N. Y., _C. Fox_, xxix, 293.
---- of Connecticut, catalogue of, _J. H. Linsley_, xliii, 345.
----, about Richmond, Indiana, catalogue of, with notes,
_J. T. Plummer_, xlvi, 244.
----, fossil, from Brunswick Canal, Georgia, _R. Harlan_,
xliii, 141.^f
----, ----, at Big Bone Lick, xviii, 139; xx, 370.
----, ---- remains in marl pits, Craven Co., N. C., _H. B. Croom_,
xxvii, 168.

* * * * *

Arvicola ferrugineus, _R. Harlan_, x, 285.
---- riparius, note on, _J. T. Plummer_, xlvi, 247.

*Basilosaurus of Harlan, xxvii, 354; xxxvii, 231.
*----, named Zygodon, _R. Harlan_, xli, 179. See beyond, _Zeuglodon_.

Bradypus tridactylus, remarks on a skeleton of, _J. Wyman_,
xxxvi, 382.

*Chæropotamus, xxxvii, 231.

Crocodile, habits of, xxi, 163.

*Dicobune, xxxvii, 232.

*Dinotherium, _R. Harlan_, xli, 178.

* * * * *

[Footnote *: Fossil species are indicated by an Asterisk.]

Dipodomys Phillipsii, or Gerboa rat, from Mexico, _J. E. Gray_,
xlii, 334.

Dogs, anecdote of, xlvi, 243.

*Dorudon, xlix, 216.

*Elephant of Siberia, xxvii, 353.
*----, fossil, Ohio, Jackson Co., xxxiv, 358, 362.^f
*----, remains of, near Bloomfield, Ohio, xxv, 256.
*---- bones on the Irondiquot creek, town of Perinton, N. Y.,
xxxii, 377.
*---- tooth, found near the shore of Lake Erie, xiv, 31.
*---- bones and mylodon (?), from Oregon, _H. C. Perkins_,
xlii, 136.^f
*---- bones (of the mammoth) from near Behring's Straits, xvi, 382.

*Elk of Ireland, iv, 246.
*----? bones in North Carolina, xxvii, 170.

Eupleres, a new genus, from Madagascar, xxxi, 192.

Felis borealis, taken in Connecticut, xxxvii, 194.

*Glyptodon, xxxvii, 232.

Haliochærus griseus, a species of seal, xxxi, 358.

Hippopotamus, new, _S. G. Morton_, xlvii, 406.^f

Horse, anecdote of, xlvi, 243.

Kangaroo, six new species of, from Australia, _Gould_, xl, 217.

Macropus frenatus, xl, 217, 218.
---- lateralis, xl, 217, 218.
---- lunatus, xl, 217, 218.
---- psilopus, xl, 218.
---- robustus, xl, 217.
---- unguifer, xl, 217, 218.

*Mastodon, notice of the tooth of, _J. Wyman_, xxxix, 53.
*----, on the denial system of, xl, 377.
*----, age of, xxvii, 352; xxx, 394.
*----, Big Bone Lick and elsewhere, geological position of,
_C. Lyell_, xlvi, 320.
*----, skeleton found in excavating the Morris Canal, xiv, 188.
*----, ---- found on the Delaware and Hudson Canal, xiv, 31.
*----, ----, Genesee Valley Canal, New York, xxxiii, 201.
*----, ----, Crawford County, Ohio, _J. W. Foster_, xxxvi, 189.^f
*----, ----, Gasconade County, Missouri, xxxvi, 199.
*----, ----, obtained from near St. Louis, _A. C. Koch_, xl, 56.
*---- remains from near Cheshire, Ct., xiv, 187.
*---- ----, Berlin, Ct., xxvii, 165.
*---- ---- in New York, near Rochester, xix, 358.^f
*---- ---- ----, Orange Co., xxxi, 171.
*---- ---- ----, Ontario Co., xii, 380.
*---- ---- in New Jersey, _J. Van Rensselaer_, xi, 246.
*---- ---- in Ohio, ii, 245^f, xxv, 256; xxx, 394; xxxi, 56;
xxxvi, 189.^f
*---- ----, near Nashville, Tenn., xxvii, 354.
*---- ----, from the river St. Francis, west of the Mississippi,
i, 239.
*---- ---- in Missouri, iii, 22; xxxvi, 199; xxxvii, 191.
*---- ---- in Louisiana, _W. M. Carpenter_, xxxiv, 201.
*---- ---- in North Carolina, xxvii, 170.
*---- ---- of Wythe Co., Va., xxvii, 352.
*---- longirostris in Maryland, xliii, 143.

*Megalonyx, localities of, in U. States, xxvii, 353; xlv, 209.
*----, remarks on, _R. Owen_, xliv, 342.

*Megatherium in New Jersey, _R. Harlan_, xiv, 187.
*---- in Georgia, xxvii, 353.
*---- of Patagonia, xxxiii, 105.
*----, remains of, _R. Haymond_, xlvi, 294.
*----, had not a bony armor, xxxvii, 371.

Mice, habit of, xlvi, 242.

Mole, on the natural history of, xvii, 386; xxviii, 168.

Mus bursarius, _S. L. Mitchill_, iv, 183.
---- palustris, a new species, _R. Harlan_, xxxi, 385.

Mustela pusilla, _J. T. Plummer_, xlvi, 241.
---- vulpina, description of, _C. S. Rafinesque_, i, 82.

*Mylodon, _R. Harlan_, xliii, 141; xlv, 209.
*---- in Georgia, xlvii, 258.
*---- ? in Oregon, xlii, 136.^f
*----, _R. Owen_, xliv, 341.

*Opossum in the Stonesfield slate, xxvii, 412; xxxvii, 228.

*Orycterotherium, _R. Harlan_, xlii, 392; xliv, 69^f; xlv, 210.
*---- missouriense, description of, xliv, 69^f, 344; xlv, 210.
*---- oregonense, ibid, xlii, 136^f; xliv, 79.

*Ovis, bones of, in Ohio, xxxi, 80, 82.^f

*Phascolatherium, _R. Owen_, xxxvii, 230.

Phocena globiceps on the American coast, xxiii, 301.^f

Pig, anecdote of, xlvi, 243.

*Pleurodon, remarks on, _R. Owen_, xliv, 342.

*Quadrumanous animal of the Sub-Himalayan range, xxxiii, 211.

Sciurus, monograph of the genus, _J. Bachman_, xxxvii, 290.

Sciurus aureogaster, xxxvii, 297.
---- capistratus, xxxvii, 291.
---- carolinensis, xxxvii, 304.
---- cinereus, xxxvii, 297.
---- Colliœi, xxxvii, 307.
---- leucotis, xxxvii, 298.
---- magnicaudatus, xxxvii, 296.
---- niger, xxxvii, 307.
---- nigrescens, xxxvii, 306.
---- sub-auratus, xxxvii, 295.
---- texianus, xxxvii, 295.

Simia seniculus, or howling monkey, some account of, xl, 387.

*Sivatherium, xxxiii, 104.

Sorex, note on two, _J. H. Linsley_, xxxix, 388.
---- brevicaudatus, _J. T. Plummer_, xlvi, 237.

Squirrels containing larvæ of Estrus, xlvi, 244.

Stenorhyncus leptonyx, a seal, remarks on, xl, 390.

*Sus americana, in Georgia, _R. Harlan_, xliii, 143.^f

*Tapir, at Darmstadt, xxvi, 218.
*----, tooth of, in Louisiana, _W. C. Carpenter_, xlii, 390.^f

*Tetracaulodon, a bad genus, remarks on, xliii, 142.
*----, _R. Harlan_, xlv, 210.
*----, notice of, _R. Owen_, xliv, 345.

*Thylacotherium, xxxvii, 228.

Troglodytes niger, xlvii, 411.

Unicorn, on the existence of, xxi, 123.

Vespertilio pruinosus, Hoary Bat, met with in Connecticut,
xxxvii, 195.

*Whale, xvii, 289.
----, suspension of respiration in, xxix, 348.

*Zeuglodon of Owen, xxxvii, 231.
*----, not a reptile, _R. Owen_, xxxix, 204.
*----, geognostic, position of, xxxviii, 381.
*----, skeleton of, _S. B. Buckley_, xliv, 409.
---- of Alabama, obtained by A. C. Koch, xlix, 218.

ORNITHOLOGY--_Birds_.

Birds of Corfu, the Ionian Islands and Crete, number of,
_H. M. Drummond_, xlvii, 186.
*----, fossil, of Tilgate Forest, xxix, 362.
*----, gigantic Struthoid from New Zealand, xliv, 417; xlv, 184;
xlviii, 194; xlix, 219, 403.
---- sculptured in an ancient Egyptian building, _Bonomi_, xlix, 403.
---- of North America, on the migration of, _J. Bachman_, xxx, 81.
----, American, miscellaneous notices on, _J. P. Kirtland_, xl, 19.
---- of Connecticut, catalogue of, with notes, _J. H. Linsley_,
xliv, 249.
----, of some North American, notes on, _C. Fox_, xxix, 291.
---- near Carlisle, Penn., list of, _W. M._ and _S. F. Baird_,
xlvi, 261.

* * * * *

Corvus canadensis, _C. Fox_, xxix, 291.

Cygnus americanus, or wild swan, a new species, _J. T. Sharpless_,
xxii, 83.^f

*Dinornis, _R. Owen_, xlv, 185; xlviii, 194.
*----, bearing of, on the subject of fossil footprints, xlviii, 199.
*----, notice of, _G. A. Mantell_, xlv, 184.

Falco leucocephalus, iv, 89.

Fringilla tristis, blue yellow bird, iv, 310.

Hirundo fulva, habits of, _T. M. Brewer_, xxxviii, 392.

Phalaropus hyperborea, _C. Fox_, xxix, 291.

ZOOLOGY--_Birds_.

Ptilonorhyncus holosericeus, habits of, _J. Gould_, xl, 218.

Scolopax pygmæa, _C. Fox_, xxix, 291.

Sparrows, number of caterpillars taken by, ix, 200.

Swallows, barn, notice of, _S. Woodruff_, xix, 172;
_J. H. Steel_, xix, 356.

Turkey, wild, in the Kenawha valley, xxix, 85.

Tyrannula flaviventris and T. minima, _W. M._ and _S. F. Baird_,
xlvi, 273.

HERPETOLOGY--_Reptiles_.

Reptiles, notice of R. Owen's report on fossil, xlii, 328.
----, notice of T. Hawkins's work on fossil, xxvii, 413.
----, on the geological age of fossil, _G. A. Mantell_, xxi, 359.
----, American, _A. Sager_, xxxvi, 320.^f
----, new species of, of North America, _S. L. Mitchill_, vii, 63.^f
----, notes on, _Thomas Say_, i, 256.
----, on certain North American, _D. H. Barnes_, xi, 268; xiii, 66.
----, fish and lizards, appearance of, under extraordinary
circumstances, _J. E. Muse_, xvi, 41.
---- of Connecticut, catalogue of, _J. H. Linsley_, xlvi, 37.

* * * * *

Agamas, horned, _R. Harlan_, xxxi, 383.

Alligator from Manilla, capture of, with a sketch of the skull,
xxxviii, 313.^f

Amphiuma, the genus, xi, 279.
---- tridactyli, xiii, 69.

*Basilosaurus, _R. Harlan_, xxvii, 354; xli, 179--see farther
preceding page, _Zeuglodon_.

ZOOLOGY--_Reptiles_.

Batrachian reptiles, new, _R. Harlan_, x, 53.
---- ----, arrangement of, _D. H. Barnes_, xi, 268.

Bufo, description of genus, xi, 270.
---- vulgaris, notice of, xxxix, 188.
---- cornuta, i, 265.

Chameleon, change of color, xxviii, 79.

*Chelonia Couperi, Georgia, _R. Harlan_, xliii, 144.^f

*Chirotherium, footprints of, in sandstone, Storeton quarries,
England, xxxvi, 394; xxxvii, 223.
*----, in new red sandstone of Cheshire, xxxvi, 397.

Coluber fulvius, i, 262.
---- getulus, i, 260.
---- heterodon, i, 261.
---- punctatus, i, 261.
---- trivittatus, i, 260.

Crocodile, habits of, xxi, 163.
*----, remains of, in New Jersey and Delaware, xvii, 289; xxvii, 353.

*Crocodilus clavirostris, in New Jersey, _S. G. Morton_,
xlviii, 265.^f

Crotalus durissus, or diamond rattlesnake, notice of, _J. Peck_,
xxiv, 176.
---- adamanteus, i, 263.
---- miliareus, i, 263.

Emys origonensis, _R. Harlan_, xxxi, 382.^f

*Gavial of Caen, analysis of the scales of, _A. Connell_, xxxiv, 201.

*Geosaurus, xviii, 246.

Hyla, description of genus, xi, 273;
---- crucialis, x, 64.

*Ichthyosaurus remains in United States, xxvii, 353.
*----, largest, found by Miss Mary Anning, xxviii, 369.

*Iguanodon, bones of, in Mantell's museum, xxiii, 165.

*Iguanodon, discovery of, _G. A. Mantell_, xxvii, 355.^f
*----, Maidstone, notice of, xxvii, 420.

Menopoma, description of genus, xi, 278.

*Mosasaurus, in United States, xvii, 289; xviii, 246;
xxvii, 353.

Natrix torquata or common snake of Great Britain, incident regarding,
xxxix, 186.

Ophisaurus ventralis, i, 262.

Pipa, description of genus, xi, 271.

*Plesiosaurus, xvii, 289.
*----, from North of Whitby, xxix, 364.

Proteus, of the North American lakes, _S. L. Mitchill_, iv, 181;
vii, 68.^f
----, generic character, vii, 67; xi, 284.
----, species of, vii, 68.^f
---- anguinus, xi, 284.
---- lateralis, xi, 285.
---- mexicanus, xi, 293.
---- tetradactylus, xi, 291.

Protonopsis horrida, xiii, 69.

Rana, description of genus, xi, 273.
---- clamata, x, 63.
---- cornuta, xi, 271.
---- flaviviridis, x, 58.
---- halecina, x, 61.
---- marina, xi, 271.
---- margaritifera, xi, 271.
---- melanota, x, 64.
---- ocellata, x, 63.
---- palustris, x, 59.
---- pipiens, x, 62.
---- scapularis, x, 59.
---- sylvatica, x, 58.
---- temporaria, xxxix, 188.
---- utricularis, x, 60.

Salamandra, description of genus, xi, 276.
---- agilis, xxxvi, 322.
---- alleganiensis, i, 263.
---- lurida, xxxvi, 323.
---- flavissima, new species, x, 286.
---- punctata, i, 264.
---- subviolacea, i, 264.

Saurocephalus, see beyond, under _Ichthyology_.

*Saurodon leanus, xviii, 246.

Scincus lateralis, xxxvi, 323.^f

Scytalus cupreus, or copper-head snake, _C. S. Rafinesque_, i, 84.
---- cupreus, i, 256.

Siren, characters of the genus, xi, 281.
---- lacertina, xi, 281; xiii, 69.
---- striata, xi, 281.

Snakes, remarks on, _S. Woodruff_, xxix, 304.
----, two headed, always monsters, facts concerning, _S. L. Mitchill_,
x, 48.^f

*Tortoise, xvii, 290.
----, a new freshwater, _R. Harlan_, xxxi, 382.^f

Triton cristatus, notice of, xxxix, 189.

*Turtle, fossil, in the chalk of Kent, xli, 205.

ICHTHYOLOGY--_Fishes_.

Fishes, _L. Agassiz's_ subdivisions, xxx, 33.
----, notice of _Yarrell's_ British, xxxvii, 167.
----, transferring of salt water species to fresh waters, remarks on,
xxxix, 378.
----, ---- from one pond to another, xxxvi, 342; xl, 405.
----, limits of occurrence in high latitudes, vi, 383.
---- of Massachusetts, critical review of, J. V. C. Smith on,
_D. H. Storer_, xxxvi, 337.
---- of Connecticut, catalogue of, _J. H. Linsley_, xlvii, 55.
---- of New York, _DeKay's_ Report on, xlv, 275.

Fish, double, _S. Churchill_, xxvi, 116.^f
----, fossil, of the United States, identified by L. Agassiz, from
fossil teeth, xxviii, 277.

ZOOLOGY--_Fishes_.

Fishes, fossil, notices of several American species, _W. C. Redfield_
and _J. H. Redfield_, xli, 24.
----, ----, in the Connecticut valley, _E. Hitchcock_, vi, 76.^f
----, ----, in Connecticut, xxvii, 354; xxxiv, 198; xxxvi, 187;
xli, 24, 164.
----, ----, in Massachusetts, iii, 222, 365; xli, 24; xliii, 172.
----, ----, in New Jersey, _L. D. Gale_, xxxv, 192.
----, ----, ----, _W. C. Redfield_, xxxvi, 186; xli, 24, 164;
xliv, 134; xlv, 314.
----, ----, in Pennsylvania, xlii, 233.
----, ----, in Virginia, _W. C. Redfield_, xxxiv, 201; xli, 165.

* * * * *

Alosa tyrannus, xlv, 281.

Amblyopsis, blind fish from a cave in Kentucky, _J. Wyman_, xlv, 94.

*Ameibodon, xxxvii, 233.

Amia occidentals, xlv, 281.

Anguilla tenuirostris, of DeKay, the Muræna bostoniensis of Lesueur,
xlv, 282.

Baione fontinalis of DeKay, a species of Salmo, xlv, 280.

Boleosoma tesselatum of DeKay the Etheostoma Olmstedi of Storer,
xlv, 276.

Brosmius vulgaris, xlv, 281.

*Catopterus, on the genus, _J. H. Redfield_, xli, 26.
*---- anguilliformis, xli, 27.
*---- gracilis, xli, 27.
*---- macrurus, xli, 27.
*---- parvulus, xli, 28.

Clupea elongata, xlv, 281.

Ctenolabrus uninotatus, xlv, 279.

Cyprinidæ of India, notice of, _D. H. Storer_, xli, 92.

Dory, new species of, _S. L. Mitchill_, xi, 144.^f

*Edaphodon, xxxvii, 233.

Exoglossum, a new genus of fish, _C. S. Rafinesque_, i, 155.
---- annulatum, i, 156.
---- vittatum, i, 156.

Fistularia tabacaria, xlv, 280.

Gasterosteus quadracus, xlv, 277.

Gunnellus mucronatus, xlv, 278.

Gymnotus, remarks on, xl, 386.

Halibut and streaked bass, dissection of the eye of, _W. C. Wallace_,
xxvi, 393^f, 394.

*Holoptychus nobilissimus, Blossburg, Pa., xlii, 233.

Labeo gibbosus identical with Catostomus tuberculatus, xlv, 279.

Lactophrys camelinus, xlv, 283.

*Lamna, in a crag pit in Suffolk, England, xxxviii, 124.

Lepidostei, microscopic structure of the teeth of, _J. Wyman_,
xlv, 359.^f

Lophius americanus, xlv, 278.

Lota inornata of DeKay, the L. brosmiana of Storer, xlv, 281.

Lumpus anglorum, xlv, 282.

*Megalichthys, &c., Manchester, England, xxxviii, 125.

Ophiognathus, a genus of fishes, identical with the Saccopharynx of
Mitchill, xv, 358.

Osmerus viridescens, xlv, 280.

Paddle fish of the Ohio, notice of, xii, 201.^f

*Palæoniscus Agassizii, xli, 26.
*---- fultus, xli, 25.
*---- latus, xli, 25.
*---- macropterus, xli, 25.
*---- ovatus, xli, 26.

*Passalodon, xxxvii, 233.

Perca nobilis, dissection of the eye of, _W. C. Wallace_, xxvi, 394;
xxvii, 216.^f

Percinæ, analogies of, with the Serraninæ, xxxix, 389.

Pileoma, genus of fish, by DeKay, identity of, with the Etheostoma of
Rafinesque, xlv, 276.

Polyodon, of the Ohio, xii, 201.^f

Raja erinaceus, _S. L. Mitchill_, ix, 290.^f

Rhombus triacanthus, xlv, 278.

Salmo, remarks on the genus, _L. Agassiz_, xxviii, 76.

*Saurocephalus, of R. Harlan, xxvii, 353.
*----, a fish, _R. Owen_, xxxix, 203.

*Shark, xvii, 289.
*Fossil shark's teeth of New Jersey, xxviii, 378.

Spinax acanthias, xlv, 283.

Squalus, remarks on some species of, _J. E. DeKay_, xv, 359.

Stilbe chrysoleucus of DeKay, the Leuciscus chrysoleucus of Storer,
xlv, 279.

Sturgeon, spoonbill, of the Ohio, notice of, xii, 201.^f

Syngnathus fasciatus of DeKay, the S. Peckianus of Storer, xlv, 283.
---- viridescens of DeKay, the S. fuscus of Storer, xlv, 283.

Torpedo, new species, _D. H. Storer_, xlv, 165.^f

Uranidea quiescens of DeKay, the Cottus viscosus of Haldeman,
xlv, 277.

Zeus crinitus, description of, _S. L. Mitchill_, xi, 144.^f

INSECTS and ANNELIDS.

Ægeria tricincta, xxxvi, 310.
---- caudata, xxxvi, 311.
---- cucurbitæ, xxxvi, 310.
---- exitiosa, xxxvi, 312.
---- fulvipes, xxxvi, 312.
---- pyri, xxxvi, 313.
---- scitula, xxxvi, 313.
---- syringæ, xxxvi, 311.
---- tipuliformis, xxxvi, 312.

Alypia octomaculata, xxxvi, 314.

Annelides, slates of Waterville, Maine, xli, 163.

Butterflies, emigration of, xiv, 387.

Calandra palmarum, or palm weavil, notice of, xl, 387.

Caterpillars, emigration of a colony of, _J. Skene_, ix, 284.^f

Cecidomyia destructor, notice of, _Miss M. H. Morris_, xl, 381.
----, notice of, with its parasites, _E. C. Herrick_, xli, 153.

ZOOLOGY--_Insects and Annelids_.

Ceratomia quadricornis, xxxvi, 293.

Chœrocampa chœrilus, xxxvi, 302.
---- pampinatrix, xxxvi, 301.
---- tersa, xxxvi, 303.
---- versicolor, xxxvi, 303.

Chrysomela vitivora, [Haltica chalybea] some account of, _D. Thomas_,
xxvi, 113.^f
----, remarks on, _E. C. Herrick_, xxvii, 420.

Cicada septendecim, on the habits of, xiii, 224.
---- ----, notices and observations on, _S. P. Hildreth_, xviii, 47.^f
---- ----, remarks on, _D. Thomas_, xxi, 188.

Cychrus Andrewsii, xxxvi, 391.
---- angulatus, xxxvi, 392.
---- cristatus, xxxvi, 392.
---- Leonardii, xxxvi, 392.
---- tuberculatus, xxxvi, 392.

Deilephela lineata, xxxvi, 304.
---- Chamænerii, xxxvi, 305.

Furia infernalis, notice of, xiii, 396.

Geometra vernata, or elm tree moth, parasite of the eggs of,
_E. C. Herrick_, xxxviii, 385; xl, 211.

Glaucopis epimenis, xxxvi, 319.
---- ipomææ, xxxvi, 316.
---- Latreillana, xxxvi, 319.
---- omphale, xxxvi, 317.
---- pholus, xxxvi, 318.
---- semidiaphana, xxxvi, 318.

Goliathus magnus, remarks on, xxxiv, 27.

Melolontha or May bug, notice of, _J. Cist_, viii, 269.^f

Phalæna antiqua, and some species of Papilio, _Miss D. L. Dix_,
xix, 62, 63.
---- devastator, or cut-worm, _J. P. Brace_, i, 154.

Philampelus achemon, xxxvi, 300.
---- satellitia, xxxvi, 299.
---- vitis, xxxvi, 299.

Platygaster, a species of, parasitic on the eggs of the elm tree moth,
xxxviii, 385; xl, 211.

Procris Americana, xxxvi, 315.

Pterogon inscriptum, xxxvi, 306.

Sesia diffinis, xxxvi, 308.
---- pelasgus, xxxvi, 308.

Smerinthus astylus, xxxvi, 290.
---- excæcata, xxxvi, 290.
---- geminata, xxxvi, 291.
---- Juglandis, xxxvi, 292.
---- modesta, xxxvi, 292.
---- myops, xxxvi, 291.

Sphinx, American species of, _T. W. Harris_, xxxvi, 282.
---- carolina, xxxvi, 294.
---- cinerea, xxxvi, 295.
---- cingulata, xxxvi, 293.
---- coniferarum, xxxvi, 297.
---- drupiferarum, xxxvi, 294.
---- ello, xxxvi, 297.
---- gordius, xxxvi, 295.
---- hylæus, xxxvi, 296.
---- kalmiæ, xxxvi, 295.
---- plebeia, xxxvi, 296.
---- sordida, xxxvi, 296.

Thyreus Abbottii, xxxvi, 307.
---- lugubris, xxxvi, 306.
---- nessus, xxxvi, 308.

Thyris maculata, xxxvi, 313.

Trochilium denudatum, xxxvi, 310.
---- marginatum, xxxvi, 309.
---- tibiale, xxxvi, 309.

Urocerus, insect, found in the wood of a table, _J. Foggo_, ix, 288.^f
----, remarks in reply, x, 65.

ARACHNIDA--_Spiders_.

Spiders and spider-webs, observations of J. Edwards on, xxi, 109.^f
----, miscellaneous notices concerning, xxi, 116.
----, North American, _N. M. Hentz_, xxi, 99.^f
---- of the United States, list of species described by N. M. Hentz,
xlvii, 411.

ZOOLOGY--_Spiders_.

Acarus Crossii, xxxii, 374^f; xxxv, 125^f; xliii, 395; xlix, 227.

Aranea aculeata, notice of, _Miss D. L. Dix_, xix, 61.^f

Agelena, characters of genus, xxi, 103.^f

Attus, characters of genus, xxi, 107.^f

Clubiona, characters of genus, xxi, 102.

Dolomedes, characters of genus, xxi, 106.^f

Dysdera, characters of genus, xxi, 101.^f

Epeira, characters of genus, xxi, 104.^f

Epiblemum, characters of genus, xxi, 108.^f

Filistata, characters of genus, xxi, 101.^f

Gossamer spider, genus, xvi, 399.

Herpyllus, characters of genus, xxi, 102.^f

Hydrachna formosa, xxx, 354.^f
---- pyriformis, xxx, 358.^f

Linyphia, characters of genus, xxi, 104.^f

Lycosa, characters of genus, xxi, 106.

Mimetus, characters of genus, xxi, 104.^f

Oletera, genus, characters of, xxi, 100.^f

Pholcus, characters of genus, xxi, 103.^f

Segestria, characters of genus, xxi, 101.^f

Spermophora, a new sub-genus of spiders, _N. M. Hentz_, xli, 116.^f

Sphasus, characters of genus, xxi, 105.^f

Tegenaria, characters of genus, xxi, 102.^f

Tetragnatha, characters of genus, xxi, 104.

Theridium, characters of genus, xxi, 103.^f

Thomisus, characters of genus, xxi, 105.^f

ZOOLOGY--_Crustacea_.

CRUSTACEA.

Anatifa, metamorphosis of, and relation to Crustacea, _J. D. Dana_,
xlv, 335.

Argulus catostomi, _J. D. Dana_ and _E. C. Herrick_, xxx, 388;
xxxi, 297.^f
----, new species, _T. W. Harris_, xxxvi, 393.

Artemia salina, xli, 193.

*Astacus, fossil, xvii, 287.

Balanus peregrinus, xxiv, 131.^f

Caligus americanus, description of, _J. D. Dana_ and _C. Pickering_,
xxxiv, 225.^f

*Cancer, fossil, xvii, 287.

Entomostraca in chalk, xxx, 382.

Limnadia, a new genus of Crustacea, iv, 372.

Trilobite, a supposed recent, from N. S. Shetland, xxvii, 395.
----, nature of, _J. Green_, xxiii, 396; xxxvii, 25.

_Trilobites._

*Asaphus astragalotes, xxv, 335.
*---- diurus, xxxvii, 40.
*---- limulurus, xlviii, 309.^f
*---- myrmecoides, xxiii, 397.
*---- platypleurus, xxxii, 169.
*---- polypleurus, xxxiv, 380.
*---- tetragonocephalus, xxv, 335.
*---- Trimblii, xxxii, 347.

*Bumastis Barriensis, xlviii, 309.^f
*---- Trentonensis, xlvii, 368.^f

*Calymene Bucklandii, xxxvi, 106.^f
---- bufo, xxxvii, 32; xxxviii, 410.
*---- niagarensis, xlviii, 309.^f
*---- odontocephala, xxv, 334.
*---- phlyctainodes, xxxii, 167.
*---- Rowii, n. sp., xxxiii, 406.
*---- senaria, xlii, 230; xlvii, 363.^f

*Ceratocephala goniata, xxxiv, 377.^f

Ceratocephala ceralepta, xxxiv, 379.^f

*Ceraurus crosotus, _J. Locke_, xliv, 346^f;
xlv, 222.^f
*---- pleurexanthemus, xlvii, 363.^f

*Cryphæus, new genus, _J. Green_, xxxii, 343.
*---- Boothii, xxxii, 344.^f
*---- collitelus, xxxii, 346.

*Hemicrypturus, tail of, xlviii, 307.^f

*Homalonotus delphinocephalus, xlviii, 311.^f

*Illænus Trentonensis, xlvii, 368.^f

*Isotelus gigas, xlvii, 363.^f
*---- megistos, xlii, 366.^f

*Paridoxides, species of, _J. Hall_, xxxiii, 139.^f
*----, remarks on the genus, _J. Green_, xxxiii, 341.
*---- Harlani, xxv, 336.

*Triarthrus Beckii, xlvii, 370.^f

*Trimerus Jacksonii, xxxii, 347.

*Trinucleus caractaci, xlvii, 378.^f
*---- tesselatus, xlvii, 363.^f

MOLLUSCA--_Shells_.

Shells, new, of the coast of New England, _J. G. Totten_, xxvi, 366^f;
xxviii, 347.^f
---- of Middlebury, Vt., _C. B. Adams_, xl, 266, 408.
---- of Massachusetts, southeastern shores, _C. B. Adams_, xxxvi, 387.
----, new, _A. A. Gould_, xxxviii, 196.
----, ----, _J. P. Couthouy_, xxxiv, 216; xxxvi, 389.
---- of Connecticut, catalogue of, _J. H. Linsley_, xlviii, 271.^f
---- on the Connecticut Reserve, Ohio, catalogue of, including many
Helices, &c., xxxi, 36, 200.
----, new species, _H. C. Lea_, xlii, 106.^f
----, new freshwater, from Alabama, Tennessee, &c., _T. A. Conrad_,
xxv, 338.^f
---- about Richmond, Indiana, list of, _J. T. Plummer_, xlviii, 94.
----, new, _B. Tappan_, xxxv, 268.^f
---- of some Ohio rivers, _S. P. Hildreth_, xiv, 276.
----, economical uses of some species of, xxxii, 53, 235.
----, fossil, tertiary of the United States, _T. A. Conrad_,
xxiii, 204, 339; xxviii, 104, 280; xli, 344.^f
----, ----, ----, remarks on, and list of, _J. T. Hodge_,
xli, 332, 343.
----, ----, ----, of the United States, mostly from Claiborne,
Alabama, _H. C. Lea_, xl, 92.^f
----, ----, ----, from North Carolina, xxxix, 387.
----, ----, chambered univalve, Virginia, _M. Tuomey_, xliii, 187.
----, ----, transition, condition and character of, _T. A. Conrad_,
xxxvi, 12; xxxviii, 86.
----, ----, freshwater shells with coal, Lancashire, England,
xxxiv, 26.
----, ----, Cornwall, England, _C. W. Peach_, xlii, 327.
----, ----, of the Ludlow rocks, xxx, 48; xxxviii, 90.
----, ----, microscopic corallines and minute shells in white chalk,
_Lonsdale_, xxxiii, 111.

* * * * *

*Actæon levis, xl, 94.^f
*---- magnoplicatus, xl, 94.^f
---- parvus, xlii, 111.^f
---- trifidus, xxvi, 368.^f

Alasmodonta and Unio, on the genera, with descriptions of species,
_D. H. Barnes_, vi, 107^f, 258.^f
----, vi, 275.
---- arcuata, vi, 277.^f

Alasmodonta complanata, vi, 278^f; xiv, 289.
---- marginata, vi, 279.
---- radiata, xxv, 341.^f
---- rugosa, vi, 278^f; xiv, 289.
---- undulata, vi, 279.

*Ammonites in Canada, viii, 84.
*---- at Patterson, N. J., v, 241.
*---- bellicosus, xxix, 150.^f
*---- colubrellus, xxix, 154.^f
*---- delawarensis, xviii, 244.^f
*---- Hildrethi, xxix, 149.^f
*---- hippocrepis, xvii, 280.
*---- placenta, xvii, 279; xviii, 249.^f
*---- telifer, xxiii, 290.
*---- Vanuxemi, xviii, 244.^f

*Amphidesma constricta, xli, 347.^f
*---- nuculoides, xli, 347.
*---- protexta, xli, 347.

Anatina papyratia in Rhode Island, _J. G. Totten_, xxviii, 347.^f

Anculosa picta, xxv, 342.^f

Anculotus dentatus, xxxvi, 390.

*Anodonta abyssina, xxix, 149.^f
---- declivis, xxv, 341.^f
---- subvexa, xxv, 341.^f
---- undulata, xiv, 290.

*Anomia argentaria, xxiii, 293.^f
*---- tellinoides, xxiii, 294.^f

Astarte castanea, xxviii, 348.^f
---- Danmoniensis, xxviii, 349.^f
*---- tellinoides, xxiii, 342.
*---- ungulina, xxiii, 342.

*Atrypa affinis, xlviii, 306.^f
*---- congesta, xlviii, 305.^f
*---- extans, xlvii, 369.^f
*---- naviformis, xlviii, 305.^f
*---- plicata, xlviii, 305.^f

*Avicula demissa, xlvii, 376.^f
*---- leptonota, xlviii, 306.^f

*Baculites compressa, ii, 41; xxiii, 291.
*---- ovata, ii, 41; xvii, 280; xviii, 249.^f

*Belemnites, age of, xxix, 351.
*----, _Raspail's_ opinion respecting, xvii, 184.
*----, animal of, xlv, 403.

Belemnites ambiguus, xxvii, 281; xviii, 249.^f
*---- americanus, xvii, 281; xviii, 249.^f

*Bellerophon bilobatus, xlvii, 365^f; xlviii, 300.^f
*---- punctifrons, xlvii, 369.^f
*---- sulcatinus, xlvii, 359.^f

*Buccinum interruptum, xli, 345.
*---- multirugatum, xli, 345.
---- obsoletum, xxxvi, 387.
*---- parvum, xl, 100.^f
---- rosaceum, xxxviii, 197.
---- trivittatum, xxxvi, 387.
---- vibex, xxxvi, 387.

Bulla debilis, xxxviii, 196.
---- Gouldii, xxxvi, 390.
---- hiemalis, xxxvi, 390.
---- insculpta, Rhode Island, xxviii, 350.^f
---- lineolata, xxxvi, 389.
---- obstricta, xxxviii, 196.
---- oryza, Rhode Island, _J. G. Totten_, xxviii, 350.^f
---- triticea, xxxiv, 217.

*Calyptræa costata, ii, 40.

*Cameroceras trentonense, xlvii, 369.^f

Cancellaria buccinoides, xxxiv, 218.
*---- pulcherrima, xl, 99.^f

*Cardita abbreviata, xli, 347.^f
*---- alticostata, xxiii, 342.
*---- decisa, xxiii, 292.
*---- perplana, xli, 347.^f

Cardium pubescens, xxxiv, 216.
---- edule, xxxii, 254.
---- Mortoni, xxiii, 346.
*---- sublineatum, xli, 347.^f

Carychium exile, xlii, 109.^f

*Cassis Hodgii, xli, 346.^f

Cerithium cancellatum, xlii, 111.^f
*---- carolinense, xli, 345.
---- Emersonii, xxxvi, 388.
---- nigrocinctum, xxxvi, 388.
---- reticulatum, of Rhode Island and Massachusetts, _J. G. Totten_,
xxviii, 352.^f
---- terebrale, xxxix, 373.
*---- unilineatum, xli, 345.^f

*Chama congregata, xxiii, 341.
*---- corticosa, xxiii, 341.
---- gigas, xxxii, 256.

Chiton, new species of, _D. H. Barnes_, vii, 69.^f
----, remarks on, xxxii, 251.
---- echinatus, vii, 71.^f
---- Emersonii, xxxiv, 217.
---- fulminatus, xxxiv, 217.
---- magellanicus, vii, 70.
---- niger, vii, 71.^f
---- peruvianus, vii, 70.^f
---- sagrinatus, xxxiv, 217.
---- striatus, vii, 70.^f

*Clavagella armata, xxiv, 129.^f

Claviger, characters of genus, _S. S. Haldeman_, xlii, 216.

Cochlodesma, new genus, _J. P. Couthouy_, xxxvi, 389.

Columbella avara, xxxvi, 387.

*Conulariæ, in Canada, viii, 85.

*Conus adversarius, xxxix, 388; xli, 345.^f
*---- gyratus, xxiv, 131.^f
*---- parvus, xl, 103.^f

*Corbula idonea, xxiii, 341.
*---- oniscus, xxiii, 341.^f

Crepidula acuta, xlii, 108.^f
*---- lirata, xxiii, 344.

*Cucullæa vulgaris, xvii, 285;
xviii, 250.^f

Cyclas elegans, xxxix, 375.
---- staminea, xxv, 347.^f

*Cyclora, new genus of fossil shells, _J. Hall_, xlviii, 294.
*---- minuta, xlviii, 294.

Cypræa, genus, notice of a monograph of, _Duclos_, xx, 379.
*---- carolinensis, xli, 346.^f
---- moneta, xxxii, 250.

*Cypricardia alata, xlviii, 300.^f
*---- angusta, xlviii, 306.^f
*---- angustifrons, xlvii, 378.^f
*---- modiolaris, xlvii, 379.^f
*---- obsoleta, xlviii, 306.^f
*---- orthonata, xlviii, 300.^f
*---- ovata, xlvii, 378.^f

Cyrena purpurea, xlii, 106.^f

*Cyrtoceras pilosum, xlvii, 369.^f

*Cyrtolites ornatus, xlvii, 376.^f

*Cytherea excavata, xxiii, 292.^f
*---- marylandica, xxiii, 343.
---- Sayana, _T. A. Conrad_, xxiii, 345.

*Delthyris brachynota, xlviii, 303.^f
*---- decemplicata, xlviii, 313.^f
*---- expansus, xlvii, 368.^f
*---- niagarensis, xlviii, 313.^f
*---- radiata, xlviii, 313.^f
*---- sinuata, xlviii, 313.^f
*---- staminea, xlviii, 313.^f

*Dispotœa dumosa, xli, 346.^f
*---- multilineata, xli, 346.^f

*Donax rusticus, xxix, 151.^f

Eolis bostoniensis, xxxiv, 216.
---- diversa, new species, _J. P. Couthouy_, xxxvi, 385.
---- gymnota, xxxiv, 217.
---- salmonacea, xxxiv, 217.

*Exogyra costata, ii, 43; xvii, 284.

*Fasciolaria mutabilis, xli, 346.^f

*Foraminifera in the green sand of New Jersey, xli, 213.

*Fulgur contrarius, xxxix, 387.
*---- excavatus, xxxix, 387.
*---- incilis, xxiii, 343.

Fusus cinereus, xxxvi, 388.
---- harpularius, xxxiv, 218.
*---- inhabilis, xxix, 150.^f
---- scalariformis, xxxviii, 197.
---- pleurotomarius, xxxiv, 218.
---- tornatus, xxxviii, 197.

Gnathodon, observations on the genus, _T. A. Conrad_, xxxviii, 92.
---- cuneata, xxxviii, 92.
---- flexuosa, xxxviii, 92, 93.^f
*---- Grayi, xxxviii, 92.
---- minor, xli, 347.^f

*Gryphæa convexa and mutabilis, xvii, 283.
*---- vomer, xvii, 283; xviii, 250.^f
*---- plicatella, xxiii, 293.

Helix, species of, in Ohio, xxxi, 36.
----, observations on some, xl, 272.
---- multidentata, remark on, _C. B. Adams_, xl, 274.
---- pomatia, xxxii, 254.

*Infundibulum centralis, xli, 348.

Jaminia exigua, xxxiv, 217.
---- seminuda, xxxvi, 388.

Lacuna neritoidea, xxxviii, 197.

Lima glacialis, xxiii, 345.

Limnea acuminata, xxxix, 374.
---- chalybea, xxxviii, 196.
---- pallida, xxxix, 374.
---- stagnalis, xxxi, 35.^f
---- umbilicata, xxxix, 374.

*Lingula acutirostris, xlviii, 306.^f
*---- antiqua, xlvii, 356.^f
*---- cuneata, xlviii, 300.^f
*---- elliptica, xlviii, 306.^f
*---- oblata, xlviii, 306.^f
*---- oblonga, xlviii, 307.^f

*Lucina dolabra, xxiii, 343.
---- floridana, _T. A. Conrad_, xxiii, 344.
*---- jamaicensis, xxxix, 388.
*---- pandata, xxiii, 343.
*---- radians, xli, 347.
*---- trisulcata, xli, 346.

*Mactra clathrodonta, xxiii, 340.
*---- confraga, xxiii, 340.
*---- congesta, xxiii, 340.
*---- crassidens, xli, 346.^f
*---- modicella, xxiii, 340.
---- ovalis, xxxviii, 196.
*---- subparilis, xli, 346.^f

*Maclurea, xlvii, 360.^f
*---- labiatus, xlvii, 359.^f
*---- striatus, xlvii, 359.^f

Melampus borealis, xxiii, 345.

Melaniæ, general remarks on, _S. S. Haldeman_, xli, 21;
xlii, 216.

Melania cincinnatiensis, _I. Lea_, xxxviii, 175.
---- congesta, xxv, 343.
---- olivula, xxv, 342.^f
---- prasinata, xxv, 342.^f

*Melongena alveata, xxiii, 344.

*Microceras, new genus of fossil shells, _J. Hall_, xlviii, 294.
*---- inornatum, xlviii, 294.

*Mitra carolinensis, xxxix, 387, [called Voluta;] xli, 345.^f
*---- eburnea, xl, 102.^f
*---- elegans, xl, 102.^f
*---- gracilis, xl, 101.^f

Modiola elliptica, xlii, 107.^f
---- glandula, xxvi, 367.^f
---- pulex, xlii, 107.^f

Murex, xxxii, 235.
---- despectus, xxxii, 251.

Mya margaritifera, xxxii, 68.

Mytilus edulis, xxxii, 252.
*---- incrassatus, xli, 347.
---- margaritiferus, xxxii, 56.

Naiades, some remarks on a memoir by _I. Lea_, xvi, 378.
----, sexual characters of, _J. P. Kirtland_, xxvi, 117.^f
----, habits of, _J. P. Kirtland_, xxxix, 164.^f

Natica canaliculata, xxxviii, 197.
*---- canrena, xxxix, 387.
*---- caroliniana, xli, 347.^f
---- consolidata, xxxiv, 217.
---- flava, xxxviii, 196.
---- immaculata, xxviii, 351.^f
*---- percallosa, xli, 348.

*Nautilus DeKayi, xxiii, 291.^f

*Nucula bella, xxiii, 343.
*---- cœlata, xxiii, 343.
*---- faba, xlvii, 369.^f
*---- fabula, xlviii, 295.
*---- inflata, xlvii, 369.^f
*---- machæriformis, xlviii, 306.^f
---- mactriformis, xlviii, 306.^f
---- myalis, xxxiv, 216.
---- navicularis, xxxvi, 389.
*---- obliqua, ii, 40; xlviii, 294.
---- tenuiculata, xxxiv, 216.

*Oliva litterata, xli, 345.^f

*Ophileta levata, xlvii, 357.^f
*---- complanata, xlvii, 357.^f

*Orbicula, xlvii, 359.^f
*---- palmulata, xlviii, 300.^f

*Orthis, xlvii, 359.^f
*---- canalis, xlviii, 313.^f
*---- circulus, xlviii, 305.^f
*---- costata, xlviii, 295.
*---- crispata, xlvii, 379.^f
*---- flabellula, xlviii, 313.^f
*---- hybrida, xlviii, 313.^f
*---- pectinella, xlvii, 366.^f
*---- striatula, xlvii, 366.^f
*---- testudinaria, xlvii, 376.^f

*Orthoceras multilineatum, xlvii, 369.^f
*---- primigenium, xlvii, 357.^f
*---- trentonense, xlvii, 369.

*Orthocerata, in Canada, v, 213^f; viii, 84.^f
*----, in Indiana, _J. T. Plummer_, xliv, 295.
*----, divided into three genera, Actinoceras, Ormoceras and Huronia,
xxxvii, 233.
*----, structure of, _J. Hall_, xlvii, 109.

*Orthonota curta, xlviii, 306.^f

*Ostrea convexa, new species, ii, 42.
*---- cristagalli, xvii, 284; xviii, 250.^f
---- edulis, xxxii, 241.
*---- falcata, xvii, 284; xviii, 250.^f
*---- panda, xxiii, 293.
*---- plumosa, xxiii, 293.
*---- radians, xxiv, 130.
---- scabra, xxxii, 247.
*---- selliformis, xxiv, 130.
*---- torosa, xxiv, 130.^f
*---- urticosa, xxiii, 293.

Oxinoe ? glabra, xxxiv, 217.

Oyster shell deposits of the Atlantic coast, of Indian origin,
xli, 168.

Paludina heterostropha, xxxv, 269.^f

*Pasithea cancellata, xl, 93.^f
*---- elegans, xl, 93.^f
*---- minima, xl, 92.^f
---- nigra, xxvi, 369.^f
---- sordida, xlii, 110.^f
---- ---- of Lea, the Actæon trifidus of Totten, xlii, 392.

Patella amæna, of Say, note on, _I. Lea_, xl, 31.
---- candida, xxxiv, 217.
*---- tentorium, xxiii, 291.

*Pecten anatipes, xxiii, 293.^f
*---- calvatus, xxiv, 130.^f
*---- craticulus, xxiii, 293.
*---- eboreus, xxiii, 341.
---- maximus, xxxii, 248.
*---- membranosus, xxiv, 130.^f
*---- perplanus, xxiii, 293.^f
*---- quinquecostatus, xvii, 285; xviii, 250.^f
*---- venustus, xxiii, 293.^f

*Pectunculus aratus, xli, 346.
*---- carolinensis, xli, 346.
*---- cuneus, xxiii, 342.
*---- quinquerugatus, xli, 346.
*---- stamineus, xxiii, 342.
*---- trigonella, xxiii, 342.

*Pentamerus oblongus, xlviii, 303.

Periploma trapezoides, remark on, _J. P. Couthouy_, xxxvi, 384.

*Perna torta, ii, 38.

*Petricola centenaria, xxiii, 341.

*Pholadomya elongata, xxix, 153.^f
*---- occidentalis, xxiii, 292.^f

Pholas, xxiii, 292.
---- costata, xxiii, 346.
*---- ovalis, ii, 39.

Physa ancillaria, xl, 268, 269.
---- elongata, xl, 269.
---- gyrina, xl, 268, 269.
---- heterostropha, xl, 268, 269.
---- pomilia, xxv, 343.
---- Sayii, xxxv, 269.^f

Pinna rotundata, xxxii, 70.

*Plagiostoma, xviii, 245.
*---- gregalis, xxiii, 292.^f
*---- pelagica, xxiii, 293.^f

Planorbis antrorsus, xxv, 343.
---- hirsutus, xxxviii, 196.
---- virens, xxxix, 374.

Pleurotoma bicarinata, xxxiv, 218.
*---- cancellata, xl, 98.^f
---- decussuta, xxxvi, 390.

Pleurotomaria, xlvii, 367^f, 368^f, 376.^f
*---- lenticularis, xlvii, 365.^f
*---- pervetusta, xlviii, 300.^f

*Polythalamia, fossil, from the Upper Mississippi, _J. W. Bailey_,
xli, 400.^f
*----, Petersburg, Va., _J. W. Bailey_, xlv, 313.
*----, in the U. States, _J. W. Bailey_, xlviii, 340.^f

*Producta from St. Louis, xliii, 18,^f
*----, &c., from Illinois, _C. U. Shepard_,
xxxiv, 144^f, 150^f, 153.^f

*Productus hepar, xxix, 153.^f
*---- pocillum, xxix, 150.^f
*---- punctatus, xxix, 153.^f

*Pterinea carinata, xlvii, 376.^f
*---- orbicularis, xlvii, 369.^f
*---- undata, xlvii, 369.^f

Pupa milium of Gould, remarks on, _C. B. Adams_, xl, 271.

Purpura lapillus, xxxvi, 388.

Pyramis fusca, xxxvi, 388.
---- striatulus, xxxiv, 218.

Ranella caudata, xxxvi, 388.

*Rostellaria arenarum, xxiii, 292.^f

Saxicava, geological changes produced by, in Plymouth Sound,
xlii, 326.

*Scalaria annulata, xvii, 281; xviii, 250.^f
*---- elegans, xl, 95.^f
---- novangliæ, xxxiv, 218.
---- subulata, xxxiv, 218.
*---- venusta, xl, 95.^f

*Scalites angulatus, xlvii, 359.^f

*Scaphites Cuvieri, xvii, 280.
*---- reniformis, xxiii, 291.

Sepiadæ, colossal recent, remarks on, xlii, 335.

*Sigaretus bilix, xxiii, 344.

Snails, habits of, _J. T. Plummer_, xlviii, 93.

*Solarium elaboratum, xxiii, 344.
---- cancellatum, xxiii, 344.

Solecurtus nitidus, xxxviii, 196.

Solemya borealis, Rhode Island, xxvi, 366.^f

Solen siliqua, xxxii, 251.

*Spirifer cameratus, xxix, 150.^f
*---- fastigiatus, xxix, 152.^f
*---- fimbriatus, xxix, 150.^f
*---- rostratus, xxiv, 152.^f

Spirorbis, [correctly, Vermetus,] xvii, 282.

*Strophomena alternata, xlvii, 366.^f

*Strophomena deltoidea, xlvii, 363.^f
*---- depressa, xlviii, 307^f, 312.^f
*---- nasuta, xlvii, 378.^f
*---- sericea, xlvii, 366^f, 369.^f
*---- striata, xlviii, 312.^f
*---- subplana, xlviii, 312.^f
*---- transversalis, xlviii, 312.^f

*Subulites elongata, xlvii, 365.^f

Tellina sordida, xxxiv, 216.

*Terebra constricta, xl, 100.^f
*---- multiplicata, xl, 101.^f

*Terebratulæ in Canada, viii, 85.

*Terebralula bovidens, xxix, 150.^f
*---- fragilis, xvii, 283; xviii, 250.^f
*---- Harlani, xvii, 283; xviii, 250^f; xxiv, 130.^f
*---- lachryma, xxiv, 130.^f
*---- lapillus, xxix, 153.^f
*---- nuciformis, xxix, 150.^f
*---- pennata, ii, 244.^f
*---- plicata, ii, 43.
*---- Sayi, xvii, 283; xviii, 250.^f
---- septentrionalis, xxxiv, 216.

*Teredo tibialis, xxiii, 292.

Thracia, on the genus, _J. P. Couthouy_, xxxvi, 382.
---- Conradi, xxxvi, 383.
---- similis, xxxvi, 383.
---- inequalis, xliii, 145.^f
---- ----, identical with the Periploma trapezoides of Deshayes,
xliv, 420.

*Tornitella bullata, xxiii, 292.^f

*Trichotropis costellatus, xxxiv, 219.

*Triton pyramidatum, xl, 99.^f

Tritonia Reynoldsii, xxxiv, 217.

Trochlea, characters of genus, _S. S. Haldeman_, xlii, 216.

*Trocholites ammonius, xlvii, 368.

*Trochus planulatus, xl, 96.^f

*Turbinella fusoides, xl, 98.^f

Turbo cinereus, xxxiv, 218.
---- incarnatus, xxxiv, 218.
---- inflatus, xxvi, 368.^f
---- minutus, xxvi, 369.^f
---- obscurus, xxxiv, 218.
*---- parvulus, xlviii, 294.
*---- parvus, xl, 95.^f

*Turritella carinata, xl, 96.^f
---- erosa, xxxiv, 218.
*---- gracilis, xl, 97.^f
---- interrupta, xxviii, 352.^f
*---- monilifera, xl, 97.^f

*Typhis acuticosta, xxiii, 344.
*---- gracilis, xxiii, 344.

Ungulina transversa, xxiii, 345.

Unio and Alasmodonta, on the genera, with descriptions of species
of Unio, _D. H. Barnes_, vi, 107^f, 258.^f
---- and Anodonta, on restricting the species of, _C. des Moulins_,
xli, 104.
---- alatus, vi, 260; xiv, 285.^f
---- albus, xiv, 281.
---- arctatus, xxv, 340.^f
---- arcus, xxv, 340.^f
---- carinatus, vi, 259.^f
---- cariosus, vi, 271.
---- cœlatus, xxv, 338.^f
---- cornutus, vi, 122.^f
---- crassus, vi, 118^f; xiv, 278.
---- cuneatus, vi, 263; xiv, 279.^f
---- cylindricus, xiv, 283.^f
---- Dombeyanus, xiii, 360.
---- ellipticus, vi, 259^f; xiv, 278.
---- foliatus, xiv, 284.^f
---- gibbosus, vi, 262^f; xiv, 286.
---- gracilis, vi, 274; xiv, 288.
---- hians, xiii, 361.
---- inflatus, vi, 266.
---- lienosus, xxv; 339.^f
---- mucronatus, vi, 266.^f
---- mytiloides, xxv, 343.^f
---- nasutus, vi, 273.
---- naviformis, xiii, 361.
---- nodosus, vi, 124^f; xiv, 281.
---- orbiculatus, xiv, 284.
---- ovatus, vi, 270; xiv, 287.^f
---- parvus, vi, 274.^f
---- perovatus, xxv, 338.^f
*---- petrosus, xxix, 149.^f
---- phaseolus, xiv, 283.
---- planus, vi, 272.^f
---- plicatus, vi, 120^f; xiv, 280.
---- prælongus, vi, 261^f; xiv, 286.^f
---- purpureus, vi, 264; xiv, 281.
---- radiatus, vi, 265; xiv, 286.
---- rectus, xiii, 361.
---- rostratus, xiii, 360.
---- rugosus, vi, 126^f; xiv, 282.
*---- saxulum, xxix, 149.^f
---- Sayii, xxxv, 268.^f
---- siliquoideus, vi, 269.^f
---- stramineus, xxv, 339.^f
---- subtentus, xxv, 343.^f
*---- terrenus, xxix, 149.^f
---- triangularis, vi, 272^f; xiv, 287.
---- tuberculatus, vi, 125^f; xiv, 282.
---- tuberculosus, xiii, 360.
*---- tumulatus, xxix, 149.^f
---- undatus, vi, 121^f; xiv, 280.
---- undulatus, vi, 120^f; xiii, 360; xiv, 279.
*---- valdensis, xlvii, 403.^f
---- ventricosus, vi, 267.^f
---- verrucosus, vi, 123^f; xiii, 360; xiv, 281.

Unionidæ, notice of _I. Lea's_ memoir on, xxii, 169; xxvii, 371.
*---- of the country of the Iguanodon, _G. A. Mantell_, xlvii, 402.^f

Unios, _D. H. Barnes's_ reclamation of, xiii, 358.
----, remarks on some, xxxii, 256.
----, habits of some species, of Ohio, _S. P. Hildreth_, xxxi, 62.

Valvata pupoidea, xxxviii, 196.
---- sincera, xl, 267.

*Venerupis subvexa, xxiii, 342.

*Venilia Conradi, xxiii, 294.^f

Venus gemma, Mass., xxvi, 367.^f

*Vermetus rotula, xviii, 250.^f

Vitrina pellucida, remarks on, _C. B. Adams_, xl, 274.

*Voluta carolinensis, xxxix, 387.
*---- dubia, xl, 103.^f
---- gravis, xxxii, 250.

ZOOLOGY.

ENTOZOA.

Entozoa, remarks on, _C. A. Lee_, xxxix, 278.^f

Achtheres percarum, notice of, _C. A. Lee_, xxxix, 285.^f

Filaria, different species, _C. A Lee_, xxix, 282.
---- in eels and black-fish, _C. A Lee_, xxxix, 295.
---- in the eye of a horse, _C. A Lee_, xxxix, 279.^f
---- in the blood of a dog, xlv, 228.

Trichocephalus dispar, a common intestinal worm in the alimentary
canal, xxxiv, 10.

RADIATA--including _Crinoidea, Corals, &c._

*Actinocrinites, _J. S. Bonny_, xxxi, 165.^f

*Alcyonium, xvii, 288.

Alveolites glomeratus [a species of Bryozoa], description of,
_T. Say_, i, 383.
*----, fossil, xviii, 246.

*Ananchytes cinctus, xvii, 287; xviii, 246, 250,^f
*---- cruciferus, [Nucleolites,] xviii, 245, 250,^f
*---- fimbriatus, xviii, 245, 250.^f

*Anthophyllum, xxix, 150.
*---- atlanticum, xvii, 288; xviii, 249,^f

*Archimedes of Lesueur, a Retepora, _D. D. Owen_, xliii, 19.^f

*Caryocrinus ornatus, xlviii, 314.^f

*Caryophyllia, xvii, 288.

*Cateniporæ, American, ii, 34.

*Cidaris diatretum, xxiii, 294.

*Clypeaster, xvii, 287.
*---- florealis, xxiii, 294.
*---- geometricus, xxiv, 131.^f

*Columnaria sulcata, xlvii, 360.^f

Comatula, species of, from the Indian Ocean, v, 46.

*Corals, fossil, in New Jersey, xlvii, 213.
*---- in Canada, viii, 86, 87.

ZOOLOGY--_Radiata_.

*Coralline animalcules in chalk, xxxix, 205.^f

Crinoidea, general remarks on the characters and geological position
of, _J. Hall_, xlv, 349.

Cristatella mirabilis, remarks on, _J. G. Dalyell_, xxviii, 78.

*Cyathocrinites pyriformis, xlviii, 314.^f

*Echinus, xvii, 287; xviii, 250.^f
*---- infulatus, xxiv, 131.^f

*Encrinite, ii, 35.
*----, from near Cincinnati, _J. G. Anthony_, xxxv, 359.^f

*Favosites lycoperdon, xlvii, 363.^f
*---- striata, i, 384.

*Graptolithes dentatus, xlvii, 370.^f

Holothuria chrysacanthophora, xxxiv, 216.

*Lunulites deticulata, xli, 348.
*---- depressa, xli, 348.

*Medusa, fossil, forming a new genus, Trianisites Cliffordi,
_C. S. Rafinesque_, iii, 285.^f

*Nummulites Mantelli, xxiii, 291.^f

*Nucleolites crucifer, xxiii, 294.

Pennatula sagitta, iv, 87^f (correctly, a Lernæa).

*Pentacrinites Hamptonii, xlvii, 376.^f

*Pentremites, new genus, _T. Say_, ii, 36.
*---- pyriformis, from St. Louis, Mo., xliii, 20.^f

Renilla americana, ii, 38.

Scutella crustaloides, xxiv, 131.^f

Sertularia utricularis, from New York harbor, J. E. DeKay, vi, 361.

*Spantangus cor marinum, xvii, 286; xviii, 250.^f
*---- parastatus, xxiii, 294.
*---- stella, xviii, 245.^f
*---- ungula, xxiv, 131.^f

*Trianisites Cliffordi of Rafinesque, iii, 285.^f

Tubularia indivisa, remarks on, _J. G. Dalyell_, xxviii, 77.

Zoophytes, general remarks on, _G. A. Mantell_, xxxiii, 329.
----, _J. G. Dalyell_ on the propagation of, xxviii, 77.

INFUSORIA.

Infusoria, _C. G. Ehrenberg_ on, xxxv, 371^f; xxxviii, 405.
----, _C. G. Ehrenberg's_ notice of American, xliii, 393.
----, siliceous, _Turpin_, xxxii, 400.
---- Tripoli of Bohemia, xxxiii, 111.
----, fluviatile localities in the United States, _J. W. Bailey_,
xliii, 328.
----, fossil deposits in the United States, xliii, 329.
----, New Haven harbor, _J. W. Bailey_, xlviii, 337.
---- of West Point, N. Y., xxxv, 118^f; xxxix, 191.
---- (?), siliceous, in Virginia deposits, _J. W. Bailey_, xliii, 329.
----, new species from the Bermudas, and from Maryland and Virginia,
xlviii, 323, 330; --table of, xlviii, 331.
----, bed of, at Petersburg, Va., _M. Tuomey_, xliv, 339.
----, fossil, of Virginia and Maryland, _C. G. Ehrenberg_,
xlviii, 201.
----, in Charleston harbor, S. C., _J. W. Bailey_, xlviii, 338.
----, new species from Oregon, _J. W. Bailey_, xlviii, 321.^f
----, in Nova Scotia, _J. W. Bailey_, xlviii, 339.
----, with bones of Mastodon, _J. W. Bailey_, xlviii, 339.
---- in guano, _J. W. Bailey_, xlviii, 338.
---- of rock salt, observations on, xli, 193.

* * * * *

Achnanthes, xliii, 325.
---- brevipes, xliii, 325.^f

Actinocyclus, xlii, 93.^f

Arthrodesmus curtus, xli, 292.^f
---- quadricaudatus, xli, 292.^f

ZOOLOGY--_Infusoria_.

Asterolampra, characters of genus, xlviii, 203.^f

Aulacodiscus, characters of genus, xlviii, 203.

Bacillaria, sketch of, _J. W. Bailey_, xli, 284^f; xlii, 88^f;
xliii, 321.^f
---- paradoxa, xlii, 101.^f
---- tabellaris, xlii, 102^f; --B. ---- ? 102.^f

Biddulphia ---- ? xlviii, 336.^f

Chætoceros, xlviii, 328.^f

Closterium, xli, 297.^f
---- digitus, xli, 302.^f
---- lineatum, xli, 303.^f
---- lunula, xli, 302.^f
---- moniliferum, xli, 302.^f
---- rostratum, xli, 303.
---- striolatum, xli, 303.^f
---- tenue, xli, 303.
---- trabecula, xli, 302.^f

Cocconeis, xlii, 101.^f

Cocconema, xliii, 324^f;--C. ----, xliii, 325.^f

Coscinodiscus argus, xlii, 95.
---- lineatus, xlii, 95.^f
---- oculus-iridis, xlii, 95.
---- patina, xlii, 96.^f
---- radiatus, xlii, 95.^f

Craspedodiscus, genus, xlviii, 324.^f

Denticella polymera, xlviii, 328.^f

Desmidium aculeatum, xli, 289.^f
---- hexaceros, xli, 289.^f
---- Schwartzii, xli, 288.^f

Diatomæ, American, _J. W. Bailey_, xxxv, 118.^f

Dicladia, characters of genus, xlviii, 204.

Dictyocha aculeata, _J. W. Bailey_, xlvi, 140.^f
---- fibula, _J. W. Bailey_, xlvi, 139.^f
---- ponticulus, xlviii, 328.^f
---- quadratum, xlviii, 328.^f

Dictyopyxis, genus, xlviii, 326.

Echinella flabellata, xliii, 324.^f
----, xliii, 324.^f

Euastrum, xli, 293^f;--crux melitensis, xli, 294.^f
---- margaritiferum, xli, 295.^f

Euastrum rota, xli, 294.^f
----, xli, 295^f, 296^f, 297.^f

Eunotia arcus, xlii, 100.^f
---- diodon, xlii, 100.^f
---- pentodon, xlii, 100.^f
---- serra, xlii, 100.^f
---- tetraodon, xlii, 100^f
----, xlii, 100^f

Eupodiscus, characters of genus, xlviii, 203.

Fragillaria pectinalis, xlii, 103.^f
---- trionodis, xlii, 103.

Frustulia, xliii, 326.

Gaillonella aurichalcea, xlii, 90.^f
---- distans, xlii, 91.^f
---- ferruginea, xlii, 93.
---- moniliformis, xlii, 89.^f
---- sulcata, xlii, 91.^f
---- varians, xlii, 91.^f
----, xlii, 92^f; xlviii, 322.^f

Gloeonema, xliii, 327.

Gomphonema, xliii, 323.
---- minutissimum, xliii, 323.^f
----, xliii, 323^f, 324.^f

Goniothecium ---- ? xlviii, 336.^f

Heliopeta, genus, xlviii, 324.

Hercotheca, genus, xlviii, 327.
---- mammilaris, xlviii, 327.

Isthmia, xliii, 321.

Lithocampe, xlviii, 336.^f

Mastogonia, genus, xlviii, 326.^f

Meridion vernale, xlii, 103.^f

Micrastenas Boryana, xli, 293.^f
---- tetras, xli, 293.^f
----, xli, 293.^f

Microtheca octoceros, xli, 304.

Naunema, xliii, 326^f; --N. ----, xliii, 327.^f

Navicula, xlii, 96.
---- concentrica, xlvi, 139.^f
---- sigma, xlii, 99.^f
---- striatula, xlii, 98.^f
---- viridis, xlii, 96.^f
---- viridula, xlii, 97.
----, xlii, 98^f, 99.^f

Omphalopelta, genus, xlviii, 325.

Pentasterias margaritifera, xli, 290.

Periptera, genus, xlviii, 327.

Podiscus Rogersi, _J. W. Bailey_, xlvi, 137.^f

Podosphenia, xliii, 323.^f

Pyxidicula operculata, xlii, 88.^f
---- globata, xlii, 88.

Pyxidicula, xlii, 88.^f

Raphoneis, characters of genus, xlviii, 204.

Sceptroneis, genus, xlviii, 326.^f

Schizonema, xliii, 328.

Spherastrum, xli, 290.

Staurastrum paradoxum, xli, 289.

Stephanogonia, genus, xlviii, 326.^f

Stephanopyxis, sub-genus, xlviii, 327.

Striatella, xliii, 326.
---- arcuata, xliii, 226.^f

Surirella, xlviii, 322.^f

Symbolophora, characters of genus, xlviii, 203.

Syncyclia, xliii, 326.

Synedra, xliii, 322.^f

Systephania, genus, xlviii, 325.

Tessararthra moniliformis, xli, 290.

Tessella catena, xlii, 102.^f

Triceratium, xlviii, 336.^f
---- solenoceros, xlviii, 329.^f
---- spinosum, _J. W. Bailey_, xlvi, 139.^f

Xanthidium, xli, 290.^f
---- ramosum, xli, 291.
----, xli, 291.^f

Xanthiopyxis, sub-genus, xlviii, 327.^f

Zygoceros bipons, xlviii, 329.^f
---- rhombus, _J. W. Bailey_, xlvi, 138.^f
---- Tuomeyi, _J. W. Bailey_, xlvi, 138.^f

* * * * *

Zoophytes, _G. A. Mantell's_ lecture on, xxxiii, 329. ----, see farther under _Zoology_.

_Zuccarini, J. G._, Flora Japonica of, noticed, xxxix, 175.

Zurich, Societies in, ix, 184.

Zurlite, xi, 254.

Zygodon, see _Zeuglodon_.

SUPPLEMENT.

_Adams, C. B._, on shells, found on shores of Mass., xxxvi, 387. ----, shells of Fresh Pond, xxxvi, 393. ----, new species of Delphinula, xxxviii, 193. ----, shells obtained by dredging, with account of new species, xxxviii, 396; xxxix, 373.

Alabama, sketches of geology of, _W. S. Porter_, xiii, 77. ----, ibid, Greene Co., _R. W. Withers_, xxiv, 187. ----, ibid, near Centreville, xlviii, 399. ----, the galt in, _S. G. Morton_, xxviii, 277. ----, tertiary of, xxv, 417, 419. ----, coal in, xxvi, 190.

_Aldini, J._, obituary notice of, xxvii, 405.

_Alexander, S._, letter on the comet of 1843, xlv, 195.

_Alger, F._, formula of Masonite, xlviii, 218.

_Allen, Z._, on the Providence tornado, xxxviii, 74; xliii, 137, 264.

America and Asia, Arctic Geology of, xvii, 1.

Ashes, volcanic, of Etna, analysis of, xii, 194. ----, ----, transported by winds, xxv, 129.

_Bache, A. D._, on electro-magnetic experiments, xxii, 409.^f ----, on American Meteorology, xxxviii, 95. ----, rapid corrosion of a chain cable, xxxviii, 176. ----, observations on magnetic dip, xl, 374. ----, magnetic intensity in Europe, xl, 30. ----, improvements by, in the coast survey, xlix, 229.

_Bachelder, J. M._, on the temperature of the Saco river, xxxiv, 381;
xxxvii, 389.

_Bailey, J. W._, solidification of carbonic acid, xxxvii, 398.

_Bakewell, R._, on the salt springs of Moutiers, xx, 219.^f ----, obituary notice of, xlv, 403.

_Barnes, D. H._, obituary notice of, xv, 401.

_Barratt, J._, table of closing and opening of Connecticut river,
xxxix, 88.

_Beadle, E. R._, on the level of the Dead Sea, xlii, 214.

_Beck, L. C._, on iron in salt springs of Salina, xvi, 187.

_Benton, Thos. H._, letter to H. R. Schoolcraft, on human footprints at
St. Louis, v, 230.

_Bessel, F. W._, parallax of star 61 Cygni, xxxvi, 200. ----, on the U. S. coast survey, xvi, 225. ----, on the astronomical clock, xliv, 160.

_Bingham, H._, fall of meteorites at Sandwich Islands, xlix, 407.

_Bischof, G._, origin of quartz and metalliferous veins, xlix, 396.

_Blake, E. W._, on the manufacture of steel, xvii, 111.

_Bloodgood, S. D._, on halos, xx, 297.

_Boethor, E._, obituary notice of, v, 180.

Bolca, Mount, geology and fossil fish of, iii, 224; xiii, 255.^f

_Bolton, J._, on warming houses, xxxiv, 84.

_Bonstetten, C. V. de_, obituary notice of, xxiii, 371.

_Booth, J. C._, analysis of chrome iron, xxxviii, 243.

_Bowen, G. T._, obituary notice of, xv, 403.

_Boyé, M. H._, new compound of platinum, xxxviii, 186.

_Brace, J. P._, on a vibrating dam, xlv, 372.

Breccia of the Potomac, i, 216.

_Breislak, S._, obituary notice of, xii, 192.

_Browne, P. A._, early geological section, xli, 183.

Browning gun barrels, _W. Ettrick_ on, xxxiv, 45. ---- ---- ----, process for, _J. Duntze_, ix, 168.

_Buch, L. von_, see _Von Buch_, p. 276.

_Bushnell, D._, submarine boat of, ii, 94.

Calendar, floral, see _Floral_.

Calorimotor, _R. Hare_, ii, 316.^f

_Candolle, A. P. de_, notice of G. Cuvier by, xxiii, 303. ----, on life and writings of R. L. Desfontaines, xxvii, 201. ----, ---- ---- F. Hubert, xxiii, 117. ----, memoir of, _C. F. P. von Martius_, xliv, 217. ----, see _De Candolle_, p. 65.

Carbonic acid, solidification of, _J. W. Bailey_, xxxvii, 398.

_Cass, L._, on the tide at Green Bay, xx, 217. ----, Address to Alumni of Hamilton College, xxi, 180. ----, table of tides in Lake Michigan, xx, 205; xlv, 20.

Cave in Mount Toby, i, 111.

_Chilton, G._, obituary notice of, xxxi, 421.

_Cleaveland, P._, on a Maine meteor, vii, 170.

Coal, in Pennsylvania, anthracite, _B. Silliman_, x, 331.

_Coindet, J. F._, obituary notice of, xxvii, 404.

Condensation of gases, _M. Faraday_, xlix, 373.

_Cook, Capt. J._, account of a bird's nest in New Holland,
xlvii, 218, 312.

Cordage, plants for, xxv, 330.

_Cordier, L._, Essay on the Temperature of the Earth, analysis of,
xv, 109.

_Couthouy, J. P._, two species of Cidaris and Patelloidea, xxxvi, 381. ----, monograph of the Osteodesmacea, xxxvi, 382, 384. ----, new species of shells, xxxvi, 389.

_Cowles_, statement of, concerning circular fires causing wind,
xxxvi, 53.

Currents, marine, proofs of, in New York, xxxvi, 37.

_Cutbush, J._, localities of minerals at West Point, vii, 57.

_Dana, J. F._, analysis of water of Congress Spring, xxxvi, 8.

_Dana, S. L._, new mode of analysis of soils, xxxvi, 366.

_Davy, H._, obituary of, xvii, 157, 217.^f ----, Consolations in Travel by, noticed, xx, 170.

_Dean, James_, Auroral arch or belt,
July 29, 1837, - xxxiii, 212.
Aug. 25, 1837, - xxxiii, 212.
----, spelt incorrectly _Deane_, p. 65, first column.

Deltas of rivers, formation of, _H. H. Hayden_, iii, 55.

_Dewey, C._, on the temperature of Lake Ontario, xxxiii, 403. ----, on the bones of the mammoth, xxxiii, 201. ----, Report on the Herbaceous Plants of Massachusetts, noticed, xli, 378. ----, notice of the Geological Reports of New York, xlii, 227.

_Diell, J._, on the oil of the candlenut tree, xxxiv, 209.

_Draper, J. W._, on the law of the conducting power of wires, xlv, 392.

_Drury, T._, electrical excitement of leather by friction, xxxvii, 197.

_Duntze, J._, method of browning gun barrels, ix, 168.