Coluber torquatus, [152]

Coluber viridiflavus, [170]

Colubridæ, [4], [150]

Colubrinæ, [4], [151]

concolor (Tropidonotus tessellatus, var.), [162]

concolor (Vipera berus, var.), [234]

Coniophis, [7]

Constriction, [96]

Contia, [205]

Contia modesta, [205]