Chapter II: Part 2

_Remarks._--The 22 specimens in the Chicago Natural History Museum are remarkably uniform in color in spite of differences in age; 17 are so young as to have the first upper molar only slightly worn and 5 are adults. In preparing the original description of _R. c. seclusus_, known only from specimens in the summer pelage, comparison of color was made with only the winter pelage of _R. c. chrysopsis_ and it was pointed out that the differences noted in color between the two subspecies might be seasonal rather than subspecific. A summer specimen of _R. c. chrysopsis_ (K. U. 17980, taken on June 15, 12 km. ESE Amecameca, 11,500 ft.), is available as the present account is being written. In direct comparison with the original material of _R. c. seclusus_, all in summer pelage, and in comparison with a specimen of _R. c. chrysopsis_ in winter pelage (January 18), from 30 km. E Amecameca, the summer pelage of no. 17980 is more blackish than the winter pelage and therein more closely resembles that of _R. c. seclusus_. The same is true of the more sparsely haired tail. The ears, however, are blackish as in winter-taken _R. c. chrysopsis_. This feature and also the large size and different cranial proportions of specimen no. 17980 are in accordance with the differences between _R. c. chrysopsis_ and _R. c. seclusus_ as recorded in the original description of the latter.

=Baiomys taylori analogus= (Osgood)

Northern Pygmy Mouse; Spanish, RatA cubedn Pigmeo NorteA+-o

_Peromyscus taylori analogus_ Osgood, N. Amer. Fauna, 28:256,
April 17, 1909, type from Zamora, MichoacAin.

_Baiomys taylori analogus_, Miller, N. Amer. Land. Mamm.,
1911, p. 137, December 31, 1912.

_Range._--Northwestern part of state.

_Specimens examined_, 35: nos. 100331-100365, distributed by localities as follows: 8 mi. N Zamora, 5,500 ft., 2; 11 mi. W Zamora, 5,750 ft., 1; 6-1/2 mi. W Zamora, 5,950 ft., 2; 4 mi. W Zamora, 5,450 ft., 1; 3 mi. NW PAitzcuaro, 6,700 ft., 21; 3 mi. N PAitzcuaro, 6,800 ft., 5; 2 mi. W PAitzcuaro, 6,700 ft., 3.

_Remarks._--Osgood (1909:257) has recorded this subspecies also from AcAimbaro and Los Reyes. We found that these animals got caught in our traps almost as often in the daytime as at night and concluded that they were less nocturnal, or at any rate more diurnal, than any of the other cricetine mice at the places in MichoacAin where we trapped.

=Baiomys musculus musculus= (Merriam)

Tropical Pygmy Mouse; Spanish, RatA cubedn Pigmeo Tropical

_Sitomys musculus_ Merriam, Proc. Biol. Soc. Washington,
7:170, September 29, 1892, type from Colima, Colima.

_Peromyscus musculus_, Allen and Chapman, Bull. Amer. Mus.
Nat. Hist., 9:203, June 16, 1897.

_Baiomys musculus_, Mearns, U. S. Nat. Mus. Bull., 56:381,
April 13, 1907.

_Range._--Dry, tropical, southwestern parts of state.

_Specimens examined_, 41: nos. 100366-100406; distributed by localities as follows: 1-3/4 mi. S TacAimbaro, 5,700 ft., 1; 1 mi. E and 2-1/2 mi. S TacAimbaro, 4,700 ft., 11; 4 mi. S and 1 mi. E TacAimbaro, 10; 1 mi. E and 5 mi. S TacAimbaro, 4,000 ft., 1; 6 mi. S TacAimbaro, 4,000 ft., 4; 1 mi. E and 6 mi. S TacAimbaro, 4,000 ft., 14.

_Remarks._--Osgood (1909:258) has recorded this subspecies also from La Huacana and La Salada. Three adult males with much worn teeth weigh, in grams, 8.3, 9.3, and 10.8. Weights of three adult, nonpregnant, females are 8.1, 9.4, and 9.7. None of our 13 females was pregnant.

=Peromyscus maniculatus labecula= Elliot

Deermouse; Spanish, RatA cubedn Cuatralvo

_Peromyscus labecula_ Elliot, Field Columb. Mus., zoAśl. ser.,
3:143, February (March?), 1903, type from Ocotlan, Jalisco.

_P[eromyscus]. s[onoriensis]. labecula_, Osgood, Proc. Biol.
Soc. Washington, 17:57, March 21, 1904.

_Range._--Northwestern part of state.

_Specimens examined_, 59: nos. 51402-51406, 52175, 52176, 100407-100447, 100484; and 1366-1368, 1370-1372, 1374-1377, of Bernardo Villa R., distributed by localities as follows: TancA-taro, 7; 11 mi. W Zamora, 5,750 ft., 3; 2 mi. W PAitzcuaro, 7,700 ft., 4; 3-1/2 mi. S PAitzcuaro, 7,800 ft., 2; 4 mi. S PAitzcuaro, 7,800 ft., 3; 5 mi. S PAitzcuaro, 7,800 ft., 24; 9 mi. SE PAitzcuaro, 8,000 ft., 6; 1-1/2 km. N San Juan, 2,250 M., 3; 1 km. NNE San Juan, 2,250 M., 7.

_Remarks._--The zygomatic arches are less widely flaring in specimens from TancA-taro than in those from PAitzcuaro.

=Peromyscus perfulvus= Osgood

Marsh Mouse; Spanish, RatA cubedn BreA+-ero

_Peromyscus perfulvus_ Osgood, Jour. Mamm., 26:299, November
14, 1945, type from 10 kilometers west of Apatzingan,
1,040 ft., MichoacAin.

_Range._--Known only from the semitropical Life-zone in western MichoacAin.

_Specimens examined_, 5: nos. 100593, 100595, 100597, 100598, and 100600, all from 1 mi. E and 6 mi. S TacAimbaro, 4,000 ft.

_Remarks._--J. R. Alcorn took these specimens between fields of sugar cane in tall (5 ft. high) grass growing in a belt 10 feet or so wide along side a stream, which a person could step across. The one adult, no. 100597, was recognized at the time of capture as different from any other species known to us, by reason of the long, unicolored, sparsely-haired tail and nearly clear Cinnamon Rufous color above, white underparts, white feet, and dark brown ears. The four other specimens in darker immature pelage are plumbeous and cinnamon whereas immature individuals of comparable age of _Peromyscus banderanus_ caught in the same place are plumbeous above and lack the cinnamon color. The immature animals of the two species differ in color more than do the adults. Osgood (1945:300) has recorded eleven specimens from the type locality. Our one adult weighs 52.4 grams.

=Peromyscus boylii evides= Osgood

Brush Mouse; Spanish, RatA cubedn de Chaparral

_Peromyscus spicilegus evides_ Osgood, Proc. Biol. Soc.
Washington, 17:64, March 21, 1904, type from Juquila, Oaxaca.

_Peromyscus boylei evides_ Osgood, N. Amer. Fauna, 28:152,
April 17, 1909.

_Range._--Northern part of state.

_Specimens examined_, 22: nos. 100450-100471, distributed by localities as follows: 1-1/2 mi. SSE TacAimbaro, 5,700 ft., 16; 1-3/4 mi S TacAimbaro, 5,700 ft., 1; 1 mi. E and 2-1/2 mi. S TacAimbaro, 4,700 ft., 5.

_Remarks._--Osgood (1909:153) recorded 31 specimens from Los Reyes. Weights recorded by the collectors of our specimens for 13 males from the vicinity of TacAimbaro, are 24.8 (17.2-37.1) and for 9 females 25.0 (20.0-31.5) grams. These weights include those of subadults as well as those of adults.

=Peromyscus boylii levipes= Merriam

Brash Mouse; Spanish, RatA cubedn de Chaparral

_Peromyscus levipes_ Merriam, Proc. Biol. Soc. Washington,
12:123, April 30, 1898, type from Mount Malinche, Tlaxcala.

_Peromyscus boylei levipes_, Osgood, N. Amer. Fauna, 28:153,
April 17, 1909.

_Range._--Probably central-eastern part of state.

_Remarks._--Osgood (1909:155) records one specimen of this subspecies from PAitzcuaro.

=Peromyscus hylocetes= Merriam

Woods Mouse; Spanish, RatA cubedn Ocotero

_Peromyscus hylocetes_ Merriam, Proc. Biol. Soc. Washington,
12:124, April 30, 1898, type from PAitzcuaro, 7,000 feet,
MichoacAin; Osgood, N. Amer. Fauna, 28:159, pl. 3, fig. 8,
April 17, 1909.

_Range._--Mountainous parts of state.

_Specimens examined_, 24: nos. 100472, 100542, both from 9 mi. SE PAitzcuaro at 8,000 feet altitude; 1358-1365 of Bernardo Villa R., from Cerro CuritzarAin, 3.5 km. NNW San Juan, 2,200 M.; 52178, 52185, 52187-52192, 52197, 52198, 52203, 52213-52215, from TancA-taro at elevations of 6,000 to 10,000 ft.

_Remarks._--All of the specimens were taken in pine forest. The old male from nine miles southeast of PAitzcuaro weighs 43.7 grams and the younger male from there 35 grams. The adults from TancA-taro have longer diastemae and some have the braincase more prolonged posteriorly, than in specimens from the vicinities of San Juan and PAitzcuaro but individual variation is considerable and we are unable to differentiate some of the adults from TancA-taro from those from elsewhere.

=Peromyscus truei gratus= Merriam

PiA+-on Mouse; Spanish, RatA cubedn PiA+-onero

_Peromyscus gratus_ Merriam, Proc. Biol. Soc. Washington,
12:123, April 30, 1898, type from "Tlalpam," D. F.

_Peromyscus sagax_ Elliot, Field Columb. Mus., Chicago, zoAśl.
ser., 3:142, February, 1903, type from La Palma, MichoacAin.

_Peromyscus pavidus_ Elliot, Field Columb. Mus., Chicago,
zoAśl. ser., 3:142, February, 1903, type from PAitzcuaro,
MichoacAin.

_Peromyscus zelotes_ Osgood, Proc. Biol. Soc. Washington,
17:67, March 21, 1904, type from QuerA(C)ndaro, MichoacAin.

_Peromyscus truei gratus_, Osgood, N. Amer. Fauna, 28:173,
April 17, 1909.

_Range._--Northern part of state.

_Specimens examined_, 42: nos. 100448, 100473-100483, 100485-100509, 8700, 8702, 8703, 8896, 8897, distributed by localities as follows: 8 mi. N Zamora, 5,500 ft., 2; 11 mi. W Zamora, 5,750 ft., 11; 6-1/2 mi. W Zamora, 5,950 ft., 4; 6 mi. W Zamora, 5,950 ft., 4; Rio Duaro, 9 mi. E Zamora, 5,500 ft., 1; 3 mi. N PAitzcuaro, 6,800 ft., 1; 3 mi. NW PAitzcuaro, 6,700 ft., 10; 1-1/2 mi. NW PAitzcuaro, 6,700 ft., 1; 2 mi. W PAitzcuaro, 6,700 ft., 3; PAitzcuaro (Chicago Nat. Hist. Mus.), 5.

_Remarks._--The ear measured from the notch is shortest, 19 (18-21), at Zamora, intermediate, 21 (19-23), at PAitzcuaro, and longest, 21.8 (20-23), at the type locality of _gratus_ in the Valley of MA(C)xico.

=Peromyscus melanophrys zamorae= Osgood

Blackish Mouse; Spanish, RatA cubedn Obscuro

_Peromyscus melanophrys zamorae_ Osgood, Proc. Biol. Soc.
Washington, 17:65, March 21, 1904, type from Zamora,
MichoacAin; N. Amer. Fauna, 28:187, April 17, 1909.

_Range._--Northern part of state.

_Remarks._--Insofar as we know, this mouse has been taken in MichoacAin only at the type locality.

=Peromyscus banderanus banderanus= Allen

Tarascan Mouse; Spanish, RatA cubedn Tarasco

_Peromyscus banderanus_ Allen, Bull. Amer. Mus. Nat. Hist.,
9:51, March 15, 1897, type from Valle de Banderas, Nayarit;
Osgood, Jour. Mamm., 26:300, November 14, 1945.

_Peromyscus banderanus vicinior_ Osgood, N. Amer. Fauna,
28:209, 210, April 17, 1909, part.

_Range._--Northern and eastern parts of state.

_Remarks._--Specimens from Los Reyes referred to the subspecies _P. b. vicinior_ by Osgood (1909:209-210) were later characterized by Osgood (1945:300) as agreeing with specimens from ZitAicuaro, and Osgood (_loc. cit._) thought that those from both Los Reyes and ZitAicuaro were not _P. b. vicinior_ but possibly _P. b. banderanus_. He had this material set aside for further study when he showed it to one of us (Hall) in 1945. It was his intention to revise the entire species (_P. banderanus_) but so far we know never did this before his death.

=Peromyscus banderanus vicinior= Osgood

Tarascan Mouse; Spanish, RatA cubedn Tarasco

_Peromyscus banderanus vicinior_ Osgood, Proc. Biol. Soc.
Washington, 17:68, March 21, 1904, type from La Salada,
MichoacAin.

_Range._--Hot valleys of western part of state.

_Specimens examined_, 53: nos. 100543-100592, 100594, 100596, 100599, distributed by localities, from TacAimbaro, as follows: 2-1/2 mi. S and 1 mi. E, 4,700 ft., 21; 4 mi. S and 1 mi E, 4,500 ft., 10; 6 mi. S, 4,000 ft., 6; 6 mi. S and 1 mi. E, 4,000 ft., 16.

_Remarks._--There is much variation in size in our animals. The three largest males weigh, in grams, 67.5, 50.3, 48.9 and corresponding figures for the two heaviest, nonpregnant, females are 53.5 and 48.3 grams. Of the 14 adult females, only one was recorded as having embryos; it had two embryos each 24 millimeters in crown to rump length. Where we trapped among big boulders and among the roots of trees of the genus _Ficus_, _Peromyscus banderanus vicinior_ was the only species of the genus taken. _Peromyscus boylii evides_ occurred in the less tropical vegetation, altitudinally and zonally above _P. b. vicinior_.

=Peromyscus melanotis= Allen and Chapman

Black-eared Deermouse; Spanish, RatA cubedn MontaA+-ero

_Peromyscus melanotis_ Allen and Chapman, Bull. Amer. Mus.
Nat. Hist., 9:203, June 16, 1897, type from Las Vigas,
8,000 ft., Veracruz.

_Range._--Higher mountains throughout state.

_Specimens examined_, 33: nos. 51397-51401, 52142-52166, 52172-52174, from TancA-taro.

_Remarks._--The elevation recorded on the label of one specimen is 9,000 feet and on the labels of other specimens is no lower than 10,500 feet and on some is as high as 12,000 feet. The elevation of capture is not recorded for two specimens. Osgood (1909:112) previously recorded the species from 12,000 feet elevation on Mount TancA-taro.

=Oryzomys couesi regillus= Goldman

Tropical Rice Rat; Spanish, Rata Arrocera Tropical; Tarascan word for rat is JeyAiquihuiri (Hayakewire), or Sarisi

_Oryzomys couesi regillus_ Goldman, Proc. Biol. Soc.
Washington, 28:129, June 29, 1915, type from Los Reyes,
MichoacAin; Goldman, N. Amer. Fauna, 43:37, September 23, 1918.

_Range._--Plateau region of Northeast MichoacAin.

_Specimens examined_, 22: nos. 100601-100622, distributed by localities as follows: 1 mi. N Zamora, 5,450 ft., 2; 4 mi. W Zamora, 5,450 ft., 1; 4 mi. S PAitzcuaro, 7,800 ft., 1; 1 mi. E and 6 mi. S TacAimbaro, 4,000 ft., 18.

_Remarks._--The tooth-row is longest in the specimens from Zamora, shortest in those from TacAimbaro and intermediate in length in the one specimen from PAitzcuaro. The shorter tooth-row at the lower elevation (TacAimbaro), we interpret as intergradation with _Oryzomys couesi mexicanus_. In color the specimens from TacAimbaro are, to us, indistinguishable from those from Zamora and PAitzcuaro but the color is notably darker than that of specimens from the vicinity of Apatzingan which are here referred to the subspecies _Oryzomys couesi mexicanus_. The largest male, fully adult from Zamora weighs 82.9 grams and the largest one from the vicinity of TacAimbaro weighs 73.6 grams.

=Oryzomys couesi mexicanus= Allen

Tropical Rice Rat; Spanish, Rata Arrocera Tropical

_Oryzomys mexicanus_ Allen, Bull. Amer. Mus. Nat. Hist., 9:52,
March 15, 1897, type from Hacienda San Marcos, 3,500 ft.,
Tonila, Jalisco.

_Oryzomys couesi mexicanus_, Goldman, N. Amer. Fauna, 43:33,
September 23, 1918.

_Range._--Semitropical and tropical western part of the state.

_Specimens examined_, 14: nos. 52018-52023, 52063-52070, from 1,040 ft., 10 kms., W Apatzingan.

_Remarks._--These specimens are notably paler and have shorter tooth-rows than those referred to _O. c. regillus_.

=Oryzomys fulvescens lenis= Goldman

Fulvous Rice Rat; Spanish, Rata Arrocera Pigmea

_Oryzomys fulvescens lenis_ Goldman, Proc. Biol. Soc.
Washington, 28:130, June 29, 1915, type from Los Reyes,
MichoacAin; N. Amer. Fauna, 43:91, September 23, 1918.

_Range._--Semitropical parts of state.

_Remarks._--The type and one topotype so far as we know are the only specimens of this species to have been obtained from the state. The size is hardly larger than that of a large _Reithrodontomys_.

=Sigmodon melanotis= Bailey

Fulvous Cotton Rat; Spanish, Rata Algodonera Leonada

_Sigmodon melanotis_ Bailey, Proc. Biol. Soc. Washington,
15:114, June 2, 1902, type from PAitzcuaro, 7,000 ft.,
MichoacAin.

_Range._--Central MichoacAin, as now known.

_Specimens examined_, 8: nos. 100623-100626, 52089-52092, distributed by localities as follows: 2 mi. W PAitzcuaro (7,400 and 7,700 ft.), 2; 3-1/2 mi. S PAitzcuaro, 7,800 ft., 2; TancA-taro, 6,000 ft., 4.

_Remarks._--This species was taken along with the species _S. hispidus_ two miles west of PAitzcuaro, and can be easily distinguished from the latter by the dark reddish as opposed to grayish color of the upperparts and by the shorter hind foot (less instead of more than 32.5 mm.).

=Sigmodon hispidus mascotensis= Allen

Hispid Cotton Rat; Spanish, Rata Algodonera Setosa

_Sigmodon mascotensis_ Allen, Bull. Amer. Mus. Nat. Hist.,
9:54, March 15, 1897, type from San SebastiAin, near Mascota,
Jalisco.

_Sigmodon hispidus mascotensis_, Bailey, Proc. Biol. Soc.
Washington, 15:108, June 2, 1902.

_Range._--Larger part of state.

_Specimens examined_, 4: nos. 100629, 3 mi. N PAitzcuaro, 6,700 ft.; 100630, 2 mi. W PAitzcuaro, 7,700 ft.; 100632, 1-3/4 mi. S TacAimbaro, 5,700 ft.; 100631, 6 mi. S and 1 mi. E TacAimbaro, 4,000 ft.

_Remarks._--Bailey (1902:109) records a "very large" specimen from QuerA(C)ndaro. Our specimens have shorter molariform tooth-rows than do those from nearer the type locality, for example, those from Tuxpan, Las Canoas, and Artenkiki, all three places in Jalisco.

=Sigmodon hispidus atratus= Hall

Hispid Cotton Rat; Spanish, Rata Algodonera Setosa

_Sigmodon hispidus atratus_ Hall, Proc. Biol. Soc. Washington,
62:149, August 23, 1949, type from 6-1/2 mi. W Zamora,
5,950 ft., MichoacAin.

_Range._--Known only from Zamora and the type locality.

_Specimens examined_, 2: nos. 100628 (the holotype), 6-1/2 mi. W Zamora, 5,950 ft.; 120268 (U. S. Nat. Mus., Biol. Surveys Coll.), Zamora.

_Remarks._--When the present account first was prepared our specimen from six and a half miles west of Zamora was tentatively referred to _S. h. mascotensis_. Subsequently a second specimen, from Zamora, was found. It agreed with the specimen from six and a half miles west of Zamora. Inasmuch as the second specimen agrees with the first and since each of the two differs from any previously described kind, a name and description were published in time to be inserted in the present account. From _S. h. mascotensis_, _S. h. atratus_ differs in shorter hind foot, darker upper parts, more densely haired tail, shorter skull, more convex dorsal longitudinal outline of skull, posteriorly constricted anterior palatine foramina instead of parallel-sided foramina, and shorter and less decurved anterior process of maxillary arm of zygoma.

=Neotomodon alstoni alstoni= Merriam

Volcano Mouse; Spanish, RatA cubedn de Los Volcanes

_Neotomodon alstoni_ Merriam, Proc. Biol. Soc. Washington,
12:128, April 30, 1898, type from Nahuatzin, 8,500 ft.,
MichoacAin.

_Range._--Higher mountains of state.

_Specimens examined_, 22: nos. 52179-52184, 52186, 52193-52196, 52199, 52200, 52204-52212, all from Mount TancA-taro, distributed by localities as follows: 7,800 ft., 5; 7,850 ft., 3; 10,000 ft., 4; 10,200 ft., 5; 10,500 ft., 1; 10,800 ft., 1; 11,000 ft., 2; 11,400 ft., 1.

_Remarks._--The taking of specimens on Mount TancA-taro extends the known geographic range of _Neotomodon_ approximately 75 kilometers to the southwestward; the westernmost locality previously known was Nahuatzin, the type locality.

=Nelsonia goldmani= Merriam

Dwarf Wood Rat; Spanish, Rata Montera Minuscula

_Nelsonia goldmani_ Merriam, Proc. Biol. Soc. Washington,
16:80, May 29, 1903, type from Mount TancA-taro, MichoacAin.

_Range._--Known only from the type locality.

_Remarks._--In the original description three specimens are recorded from the type locality.

=Neotoma latifrons= Merriam

White-throated Wood Rat; Spanish, Rata Montera Frentuda

_Neotoma latifrons_ Merriam, Proc. Biol. Soc. Washington,
9:121, July 2, 1894, type from QuerA(C)ndaro, MichoacAin.

_Range._--Known only from the type locality.

=Neotoma ferruginea tenuicauda= Merriam

Ferruginous Wood Rat; Spanish, Rata Ferruginosa

_Neotoma tenuicauda_ Merriam, Proc. Biol. Soc. Washington,
7:169, September 29, 1892, type from north slope of Sierra
Nevada de Colima, 12,000 ft., Colima.

_Neotoma ferruginea tenuicauda_, Howell, N. Amer. Fauna,
31:73, October 19, 1910.

_Range._--Probably all but southern tropical part of state.

_Specimens examined_, 4: nos. 100633 from 9 mi. SE PAitzcuaro, 8,000 ft., and 52177, 51390, 51391, from TancA-taro, the elevation being given as 7,850 ft. on no. 52177.

_Remarks._--Our one specimen from 9 miles southeast of PAitzcuaro was caught in a small steel trap set at a meat bait.

=Microtus mexicanus salvus= Hall

Mexican Meadow Mouse; Spanish, Metorito

_Microtus mexicanus salvus_ Hall, Univ. Kansas Publ., Mus.
Nat. Hist., 1:426, December 24, 1948, type from Mount
TancA-taro, 11,400 ft., MichoacAin.

_Range._--Known only from Mount TancA-taro at elevations of 7,800 to 11,400 feet.

_Specimens examined_, 14: nos. 51412, 51413, 52093, 52095-52099, 52101, 52103-52107, all from Mount TancA-taro, distributed by elevations as follows: 11,400 ft., 8; 11,000 ft., 2; 7,800 ft., 1; no elevation recorded, 3.

=Microtus mexicanus fundatus= Hall

Mexican Meadow Mouse; Spanish, Metorito

_Microtus mexicanus fundatus_ Hall, Univ. Kansas Publ., Mus.
Nat. Hist., 1:425, December 24, 1948, type from 3-1/2 mi. S.
PAitzcuaro, 7,900 ft., MichoacAin.

_Range._--Central part of state.

_Specimens examined_, 59: nos. 100636-100694, distributed, with reference to the town of PAitzcuaro, as follows: 3-1/2 mi. S, 7,900 ft., 9; 4 mi. S, 7,800 ft., 16; 5 mi. S, 7,800 ft., 26; 9 mi. SE, 8,000 ft., 8.

_Remarks._--Of the 23 females, only one was pregnant. It had two embryos. Average and extreme weights of ten adults of each sex, are: males, 37.8 (31.5-48.2); females, 38.0 (31.0-48.6) grams. Our specimens were trapped in well-defined runways beneath a rail fence where there was a growth of grass sufficient to make a cover for the runways. Bailey (1900:54-55) has recorded under the name _Microtus mexicanus phaeus_ specimens from Nahuatzin which may be referable to the subspecies _M. m. fundatus_.

=Mus musculus= subsp.?

House Mouse; Spanish, RatA cubedn Casero

_Mus musculus_ Linnaeus, Systema Naturae, ed. 10, 1:62, 1758,
type from Upsala, Sweden.

_Range._--Probably throughout state.

_Specimens examined_, 4: nos. 100696-100699, of which one is from TacAimbaro, 5,700 ft., and 3 are from 4 mi. S and 1 mi. E TacAimbaro, 4,500 ft.

_Remarks._--In each of our specimens the belly is dark, approximately as dark as the back. The specimens caught by us were living in the wild; that is to say, they were not caught in and around buildings. Elliot (1903:141) records the species from PAitzcuaro.

=Rattus rattus alexandrinus= (Geoffroy)

Black Rat; Spanish, Rata Negra

_Mus alexandrinus_ Geoffroy, Catal. Mammif. du Mus. Nat.
d'Hist., Paris, p. 192, 1803, type from Alexandria, Egypt.

_R_[_attus_]. _rattus alexandrinus_, Hinton, Jour. Bombay Nat.
Hist. Soc., 26:63, December 20, 1918.

_Range._--Probably throughout tropical and subtropical parts of state; recorded also from PAitzcuaro.

_Specimens examined_, 3: nos. 52027, 52033 from TancA-taro and 8909 from PAitzcuaro.

_Remarks._--These specimens answer well to the description of _R. r. alexandrinus_ except that no. 8909, taken in May, 1901, by F. E. Lutz, has yellowish underparts suggestive of _Rattus rattus frugivorous_. In the town of TacAimbaro we saw a freshly killed rat of this species which was all black.

=Sylvilagus floridanus subcinctus= (Miller)

Florida Cottontail; Spanish, Conejo de Florida

_Lepus floridanus subcinctus_ Miller, Proc. Acad, Nat. Sci.
Philadelphia, p. 386, October 5, 1899, type from Hacienda El
Molino, Negrete, MichoacAin.

_Sylvilagus floridanus subcinctus_, Lyon, Smiths. Misc. Coll.,
45:336, June 15, 1904; Nelson, N. Amer. Fauna, 29:180, August
31, 1909.

_Range._--Northeastern part of state.

_Remarks._--Nelson (1909:181) records specimens from AcAimbaro, QuerA(C)ndaro and the type locality.

=Sylvilagus floridanus restrictus= Nelson

Florida Cottontail; Spanish, Conejo de Florida

_Sylvilagus floridanus restrictus_ Nelson, Proc. Biol. Soc.
Washington, 20:82, July 22,1907, type from ZapotlAin, Jalisco;
Nelson, N. Amer. Fauna, 29:181, August 31, 1909.

_Range._--Forested areas of non-tropical part of state except northeastern part.

_Remarks._--Nelson (1909:183) records specimens from Los Reyes, PAitzcuaro and Mount TancA-taro. This species and the Mexican cottontail are favorite small game for the rural peoples.

=Sylvilagus cunicularis cunicularis= (Waterhouse)

Mexican Cottontail; Spanish, Conejo MA(C)xicano

_Lepus cunicularis_ Waterhouse, Nat. Hist. Mammalia, 2:132,
1848, type from Zacualpan (probably in state of MA(C)xico).

_Sylvilagus cunicularis_, Nelson, N. Amer. Fauna, 29:239,
August 31, 1909.

_Range._--Probably all of state except tropical coastal areas where another subspecies of the same species probably will be found to occur.

_Specimens examined_, 2: nos. 51965, 51966, from TancA-taro, one specimen labeled as taken at 6,000 feet altitude.

_Remarks._--Nelson (1909:241) has recorded this rabbit also from PAitzcuaro.

=Lepus callotis= Wagler

White-sided Jack Rabbit; Spanish, Liebre

_Lepus callotis_ Wagler, Naturliches System der Amphibien, p.
23, 1830, type from southern end of Mexican Tableland; Nelson,
N. Amer. Fauna, 29:122, August 31, 1909.

_Range._--Approximately northeastern half of state.

_Remarks._--Nelson (1909:124) records specimens from Los Reyes and QuerA(C)ndaro; we did not see any animals of this species in our own field work.

=Tayassu angulatus humeralis= Merriam

Collared Peccary; Spanish, JabalA- del Collar; Tarascan, cuchjeramba (cucheramba) or JuAiteanapu (whatalanapu)

_Tayassu angulatus humeralis_ Merriam, Proc. Biol. Soc.
Washington, 14:122, July 19, 1901, type from ArmerA-a, Colima.

_Range._--Approximately southwestern half of state.

_Remarks._--Under date of October 11, 1948, Henry W. Setzer (_in litt._) states that four specimens of this species, in the Biological Surveys Collection in the United States National Museum, were taken at La Salada, by Nelson and Goldman, and bear catalogue numbers 126156, 126157, 126158 and 126159. No. 126158 is a female taken on March 19, 1903. The other three specimens are males taken on March 17, 1903. We did not see any animals of this species in our own field work, and the only materials from MichoacAin actually examined by one of us (Hall) are the skulls of nos. 126156 and 126158, referred to above, from the Biological Surveys Collection.

=Odocoileus virginianus sinaloae= Allen

White-tailed Deer; Spanish, Venado Cola Blanca; Tarascan, Asuni (Ashumi)

_Odocoileus sinaloae_ Allen, Bull. Amer. Mus. Nat. Hist.,
19:613, November 14, 1903, type from. Esquinapa, Sinaloa.

_Range._--Probably statewide.

_Remarks._--Through the courtesy of Dr. A. Remington Kellogg we learn that in a manuscript on the deer of the _Odocoileus virginianus_ group, he and the late Major E. A. Goldman had recorded specimens, in the Biological Surveys Collection of the United States National Museum, as follows: Nahuatzin, 8,500 ft., nos. 35924/48232, and 35925/48233; Los Reyes, 5,000 ft., no. 165673; PAitzcuaro, 7,000 ft., no. 35535/47819; and Uruapan, 4,500 ft., no. 13060. We have not anywhere seen the name combination _Odocoileus virginianus sinaloae_ but from the original description we judge that _Odocoileus sinaloae_ is to be arranged as a geographic race of the wide-ranging species _Odocoileus virginianus_ as that species is now understood.

=Dasypus novemcinctus mexicanus= Peters

Nine-banded Armadillo; Spanish, Armadillo; Tarascan, IsA-ngu (Esinga)

_Dasypus novemcinctus mexicanus_ Peters, Monatsber. k. preuss.
Akad. Wissensch. Berlin, p. 180, 1864 (name restricted by
Bailey, N. Amer. Fauna, 25:52, October 24, 1905, to the
subspecies occurring at Colima).

_Range._--Probably statewide.

_Specimens examined_, 2; nos. 51392 from TancA-taro and 51964 from Apatzingan, 1,040 ft.

_Remarks._--The female from TancA-taro is immature as indicated by the wide-open sutures between the bones of the skull which in over-all length is only 72.8 mm. The male from TancA-taro is older and the over-all length of the skull is 98.33 mm. Geographic considerations alone are responsible for our use of the subspecific name _mexicanus_; we do not know the morphological features which distinguish _mexicanus_ from other named subspecies.

LITERATURE CITED

ANDERSEN, K.

1908. A monograph of the Chiropteran genera, _Uroderma_,
_Enchisthenes_, and _Artibeus_. Proc. ZoAśl. Soc. London,
for 1908:204-319, text figs. 40-58.

ALLEN, G. M.

1916. Bats of the genus Corynorhinus. Bull. Mus. Comp. ZoAśl.,
Harvard College, 60:333-356, 1 pl., April, 1916.

BAILEY, V.

1900. Revision of American voles of the genus Microtus. N. Amer.
Fauna, 17:1-88, 5 pls., 17 figs. in text, June 6, 1900.

1902. Synopsis of the North American Species of _Sigmodon_. Proc.
Biol. Soc. Washington, 15:101-116, June 2, 1902.

BENSON, S. B.

1947. Description of a mastiff bat (genus _Eumops_) from Sonora,
Mexico. Proc. Biol. Soc. Washington, 60:133-134, December 31,
1947.

DAVIS, W. B.

1944. Notes on Mexican mammals. Jour. Mamm., 25:370-403, 1 fig. in
text, December 12, 1944.

ELLIOT, D. G.

1903. A list of a collection of Mexican mammals with descriptions
of some apparently new forms. Field Columb. Mus. Pub. No. 71,
zoAśl. ser., 3(no. 8):141-149, February, 1903.

GOLDMAN, E. A.

1911. Revision of the spiny pocket mice (genera Heteromys and
Liomys) N. Amer. Fauna, 34:1-70, 3 pls. 6 figs. in text,
September 7, 1911.

1938. List of the gray foxes of Mexico. Jour. Washington Acad.
Sci., 28:494-498, November 15, 1938.

1942. Notes on the coatis of the Mexican mainland. Proc. Biol.
Soc. Washington, 55:79-82, June 25, 1942.

HALL, E. R.

1948. Two new meadow mice from MichoacAin, Mexico. Univ. Kansas
Publ. Mus. Nat. Hist., 1:423-427, 6 figs. in text, December
24, 1948.

1949. A new subspecies of cotton rat, Sigmodon hispidus, from
MichoacAin, Mexico. Proc. Biol. Soc. Washington, 62:149-150,
3 figs. in text, August, 23,1949.

HALL, E. R., and VILLA-R., B.

1948. A new pocket gopher (Thomomys) and a new spiny pocket
mouse (Liomys) from MichoacAin, MA(C)xico. Univ. Kansas Publ.,
Mus. Nat. Hist., 1:249-255, 6 figs. in, text, July 26, 1948.

1949. A new harvest mouse from MichoacAin, Mexico. Proc. Biol.
Soc. Washington, 62:163-164, August 23, 1949.

HOOPER, E. T.

1946. Two genera of pocket gophers should be congeneric. Jour.
Mamm., 27:397-399, November 25, 1946.

HOWELL, A. H.

1906. Revision of the skunks of the genus Spilogale. N. Amer.
Fauna, 26:1-55, 10 pls., November 24, 1906.

1914. Revision of the American harvest mice (Genus
Reithrodontomys). N. Amer. Fauna, 36:1-97, 7 pls., 6 figs.
in text, June 5, 1914.

1938. Revision of the North American ground squirrels, with a
classification of North American Sciuridae. N. Amer. Fauna,
56:1-256, 32 pls. (some colored), 20 figs. in text, May 18,
1938.

JACKSON, H. H. T.

1928. A taxonomic revision of the American long-tailed shrews....
N. Amer. Fauna, 51:vi+238, 13 pls., 24 figs., July 24, 1928.

MARTINEZ, L., and VILLA-R., B.

1940. Segunda contribucion al conocimiento de los murcielagos
Mexicanos--II Estado de Guerrero. Anales d. Inst. Biol.,
(Univ.) MA(C)xico. 11:291-361, illustrated, 1940.

MILLER, G. S., JR.

1897. Revision of the North American bats of the family
Vespertilionidae. N. Amer. Fauna, 13:1-140, 3 pls., 40 figs.
in text, October 16, 1897.

MILLER, G. S., JR., and ALLEN, G. M.

1928. The American bats of the genera Myotis and Pizonyx. U. S.
Nat. Mus. Bull., 144:viii+218, 1 pl., 1 fig., 13 maps, May 25,
1928.

NELSON, E. W.

1899. Revision of the squirrels of Mexico and Central America.
Proc. Washington Acad. Sci., 1:15-110, 2 pls., May 9, 1899.

1909. The rabbits of North America. N. Amer. Fauna, 29:1-314,
13 pls., 19 figs. in text, August 31, 1909.

OSGOOD, W. H.

1909. Revision of the mice of the American genus Peromyscus.
N. Amer. Fauna, 28:1-285, 8 pls., 12 figs., April 17, 1909.

1945. Two new rodents from Mexico. Jour. Mamm., 26:299-301,
November 14, 1945.

TATE, G. H. H.

1933. A systematic revision of the marsupial genus _Marmosa_, with
a discussion of the adaptive radiation of the murine opossums
(_Marmosa_). Bull. Amer. Mus. Nat. Hist., 66:1-250, pls. 1-26,
29 figs. in text, August 10, 1933.

Transmitted August 30, 1948.

22-6113

Transcriber's Notes:

_Text_ represents Italic and =Text= represents Bold.

On page 458, _Reithrodontomys fulvescens inexspectatus_ Elliot also lists _Rhithrodontomys inexspectatus_ Elliot. Apparently the two genera names (Reithrodontomys and Rhithrodontomys) are both 'correct' spellings for Harvest Mice.

Numbers and fractional parts are displayed as follows: 1-3/4 = one and three quarters; 3-1/2 = three and one half.

Typographical Corrections

Page Correction
==== ================
444 Fanua => Fauna
447 costal => coastal
451 Cumu => Como