Chorda dorsalis, the axial rod between the gut and the spinal cord, around which the vertebrae are formed, [12]

Chorophilus, [186], [189];

Ch. ornatus, [208]

Chromatophores, [35]

Chrysemys, costal plates of, [325];

green colour of, [328], [346] f.;

colour of iris, [329];

Ch. concinna, [346], [349], [350];

Ch. elegans, [346];

Ch. picta, [346], [347], [348];