Dipneusti—see Dipnoi

Dipnoi (Dipneusti), [505] f., [149];

distribution, [512]

Dipterodon, [665]

Dipterus, [506], [519];

D. valenciennesi, [506]

Diptychus, [582]

Disartete, [636] n.

Discocephali, [691] f., [651], [652]

Discognathus, [582]