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DIV. II. — MOLLUSCA. 
ORDER I. — Pulmonaria ( continued ). 
Family. 
Genus. Example of Species. 
V. Onchidium, Buchanan Onchid. typhse, Buch. 
VI. Planorbis, Brug Hel. vortex, Gm. 
VII. Limnaeus, Lam Hel. stagnalis, Gm. 
VIII. Physa, Drap Bulla fontinalis, L. 
IX. Scarabseus, Montf Hel. scarabaeus, L. 
X. Auricula, Lam Aur. myosotis, Drap. 
XI. Conovulus, Lam . Melampes,!., . . T 
Montf. . . J Voluta minuta, L. 
ORDER II. — Nudibranchiata. 
With naked gills on the back. They are divided into the follow 
ing genera. 
Genus. Example of Species . 
I. Doris, Cuv Dor. verucosa, L. 
II. Onchidora, Blame Onch. Leachii, Blain. 
III. Plocamoceros, Leuchard Ploc. ocellatus, Leach 
IV. Polycera, Cuv Doris quadrilineata, Mull. 
V. Tritonia, Cuv Trit. Hombergii, Cuv. 
VI. Thethys, Lin T. fimbria, L. Cuv. 
VII. Scyllaea, Lin S. pelagica, L. Cuv. 
VIII. Glaucus, Forster Doris radiata, Gm. 
IX. Laniogerus, Blain L. Elfortii, Blain. 
X. Eolidia, Cuv Doris papillosa 
XI. Cavolina, Brug Doris peregrina, Gm. 
XII. Flabellina, Cuv Doris affinis, Gm. 
XIII. Tergipes, Cuv Limax tergipes, Forskal 
XIV. Busiris, Risso Bus. griseus, Risso 
XV. Placobranchus, Van Hasselt Plac. Hasseltii, Cuv. 
ORDER III. — Inferobranchiata. 
Gills on the lower sides of the body. 
Genus. 
I. Phyllidia, Cuv.... 
II. Diphyllidia, Cuv . 
Example of Species. 
Phil, trilineata, Seba 
Diphyl. Brugmansii, Cuv. 
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