Xll CO]SrTE]N"Tt!. 



PAGE 

 C.AJSlI. G-ASTEKOPODA. OuDER 11. PuLMONirEKA 285 



Section A. Inopehgulata 285 



!Fam. I. Helicida. — Helix, Yitrina, Succinea, Bulimus, 

 Acliatina, Pupa, Gylindrella, Balea, Tornatellina, Paxillus, 



Clausilia ' 288 



Fam. II. Limacidce. — Limax, Anadenus, Incilaria, Arion, 

 Parmacella, Janella, Aneitea, Parmarion, Triboniopliorus, 



Viquesnelia, TestaceUa 295 



Fam. III. OncidiadcB. — Oncidium, Yaginulus 299 



Earn. lY. Limnceidce. — Limnaaa, Chilinia, Ptysa, Ancylus, 



Planorbis 300 



Fam. Y. AuricuUdce. — Atiricula, Conovulus, CarycHum 

 (Siphonaria) 303 



SscTioN B. Opergulata 305 



Fam. YI. CyclcstomidcB, — Cyclostoma, Ferussina ?, Cyclo- 



pliorus, Pupina, Helicina, Stoastoma 306 



Fam. YII. AeicuUdcs. — Acictda, G-eomelania 310 



Order III. Opistho-branchiata 311 



Section A. Tegti-eranghiata 312 



Fam. I. Tornatellidce. — Tornatella, Cinulia, PingiciUa, Glo- 

 l)iconclia, Yarigera, Tylostoma, Pterodonta ?, Tornatina ?. . 312 



Fam. II. BuUidce. — BuUa, Acera, Cylichna, Kleinella?, 

 AmpMsplij-ra, Bucciniilus, Aplustrum, Scaphander, PM- 

 line, Doridium, G-astropteron, Pliysema 315 



Fam. III. Aplysiadcs, — Aplysia, DolabeUa, Styloclieilus, 

 Dolabrifera, Siplionopyge, Notarclius, Icarus, Lobiger .... 320 



Fam. lY. Tleurohranchida. — Pleurobranclius, Postero- 

 brancliaea, Euncina, Neda, Susaria, Umbrella, Tylodina . . 322 



Fam. Y. FhilUdiad(S. — Phyllidia, Fryeria, Hypobrancliiaea, 

 Diphyllidia 324 



Section B. Nudibranghiata 325 



Fam. YI. Doridce. — Doris, Heptabranclius, Hexabranclius, 

 Atagema, Actiuocyclus, Chromodoris, Asteronotus, Glos- 

 sodoris, Goniodoris, Triopa, ^girus, Thecacera, Polj^cera, 

 Idalia, Ancula, Ceratosoma, Trevelyana, Crimora, Pelagella, 



Gymnodoris, Acantliodoris, Casella, Brach-ycMamis 328 



Fam. YII. TritoniadcB. — Tritonia, ScyllEea, Tethys, Bornella, 

 Dendronotus, Doto, GelHna, Meliboea, Lomanotus 332 



Fam. YIII. JEolidce. — JEolis, Glaucus, Fiona, Embletonia, 

 Calma, Favorinus, Galvina, Cutlionia, Filurus, Proctonotus, 

 Antiopa, Hermasa, Alderia, Cbiorsera 335 



