Chapter C

_Callosune eupompe_, polymorphism of female, 251.

Cameron, P., on larva of _S. ocellatus_, 241, 282;
protective habits of saw-fly larvæ, 290, 294.

Carlin, W. E., on _Siredon lichenoides_, 630.

Caterpillars, origin of markings, 161;
means of defence, 289;
defensive habits, 290;
food of brightly coloured species, 294;
habit of concealment by day, 291, 296;
phytophagic variability, 305, 531;
seasonal variability, 305;
experiments with ocellated species,
330;
experiments with annulated species, 336;
sexual dimorphism of, 308, 527, 534;
independent variability of stages, 416.

_Cecidomyia_, metagenesis of, 82, 586.

_Chærocampa._ _C. elpenor_ and _C. porcellus_, relationship of, 171;
markings of larvæ of the genus, 177;
_C. elpenor_, 1st and 2nd larval stages, 178;
3rd and 4th stages, 180;
5th stage, 181;
6th stage, 183;
_C. porcellus_, 1st larval stage, 184;
2nd and 3rd stages, 185;
4th stage, 186;
_C. elpenor_ and _porcellus_, larval markings compared with other
species of _Chærocampa_, 188;
_C. elpenor_, experiments with larva, 331, 332;
_C. Japonica_ and _C. Lewisii_, larvæ, 194;
_C. cretica_, larva, 524;
_C. lycetus_, larva, 527;
_C. capensis_, larva, 529;
eaten by birds, &c., 530.

Characters, new, backward transference of, 279.

Chauvin, Fräulein von, experiments with Axolotl, 558;
experiments with _Salamandra atra_, 615.

Chavannes, figure of larva referred to, 255.

Clarke, development of _Amblystoma punctatum_, 623.

Classification, objects of, 168.

Claus, on the origination of heterogenesis, 89.

Clemens, larva of _A. ello_, 268.

Climatic variation, 45;
in _P. Napi_, 47;
in _E. Belia_, 47;
nature of causes producing, 52, 105;
by sex, 61, 62;
climatic varieties very distinct from local, 45;
climatic influences operate slowly, 58;
climatic changes gradual, 652, 660.

Cole, B. G., seasonal dimorphism of _E. punctaria_, 4.

Coleoptera, grub-like larvæ of, 495.

_Colias edusa_, dimorphism of female, 250.

Colour, biological value of, 289.

Conditions of life, compulsory changes in, 651.

Congruence in Lepidopterous families, 435;
in Lepidopterous genera, 444.

_Coniferæ_, food-plants of _Anceryx_, 268.

Convergence of characters in _Ophiuroidea_, 396;
in Dipterous larvæ, 494.

Cope, Prof., habits of _Siredon Mexicanus_, 566;
on distribution of _Amblystoma_, 569.

Correlation of growth, 278, 363, 388, 415;
action of, 415, 516;
Von Hartmann’s views of, 670;
nature of, 673.

_Cryptobranchus_, characters of, 579.

Cyclical propagation, 82, 699;
and reversion, 613.