Cebus Apella.
Cebus Azarae, liability of, to the same diseases as man; distinct sounds produced by; early maturity of the female.
Cebus capucinus, polygamous; sexual differences of colour in; hair on the head of.
Cebus vellerosus, hair on the head of.
Cecidomyiidae, proportions of the sexes in.
Celibacy, unknown among the savages of South Africa and South America.
Centipedes.
Cephalopoda, absence of secondary sexual characters in.
Cephalopterus ornatus.
Cephalopterus penduliger.