Ceph a lop' o da, the class to which the squid, octopus, nautilus, etc., belong.
Ceph' al o-tho' rax, the division of the body formed by the fused head and thorax in many arthropoda.
Cer' vi cal groove, the groove marking the place of union when head and thorax are merged into a cephalo-thorax.
Cha la' za, one of the spiral masses of albumen found at the two ends of a bird's egg.
Che' li peds, the large claws in many crustaceans.
Chor-date, animals with a notochord, present throughout life or disappearing.
Chro mat' o phore, color body.
Chrys' a lis, the pupa stage of a butterfly.
Cil' i um (pl. cilia), a minute vibrating hair on the surface of many cells.
Co coon', the envelope spun by certain larval insects in which they are inclosed during the pupa stage. A similar structure, as the egg-case of spiders, earthworms, etc.