Californian Indians, decrease of.
Callianassa, chelae of, figured.
Callidryas, colours of sexes.
Callionymus lyra, characters of the male.
Callorhinus ursinus, relative size of the sexes of; courtship of.
Calotes maria.
Calotes nigrilabris, sexual difference in the colour of.
Cambridge, O. Pickard, on the sexes of spiders; on the size of male Nephila.
Camel, canine teeth of male.
Campbell, J., on the Indian elephant; on the proportion of male and female births in the harems of Siam.