on Cystoflagellates, [135];

on classification of Ciliata, [137];

on Strombidium and Torquatella, [155] n.;

on Sponges, [168], [172] n.

Caecum (diverticulum), of alimentary canal of Echinocardium cordatum, [551];

of alimentary canal of Elasipoda, [569], [571]

Caenomorpha, [137], [141] n., [154];

C. uniserialis, [155]

Cake-urchins = Clypeastroidea, q.v.

Calcaire Grossier, [70]