Crinorhiza, [212], [216]

Cristellaria, [59]

Crotalocrinus, [595];

C. pulcher, [595]

Crustacea, small, rheotaxy of, [21]

Cryptabacia, [404]

Cryptogams, Higher, spermatozoa of, [38]

Cryptoglena, shell of, [113]

Cryptohelia, [284], [287];

C. ramosa, [285]