Deep-sea, Polychaeta, [300];

Polyzoa, [478]

Deinodrilus, [351], [384]

Delagia, [478] n.

Dendrobaena, [382]

Dendrocoelum, [30], [35], [39]

Dendrostoma, [422], [425], [428]

Dendy, on Land Planarians, [33], [34], [38]

Denticles, [248], [250], [316], [522]

Dero, [352], [377]