— 428 — 



Nyassia idia, Bourguigiiat. 16 



— lacunosa, id. 9 



— lacustris, id. 11 



— magnifica, id. 16 



— nodocincta, id. 6 



— nodiilosa, id. 10 



— Nyassana, id. 13 



— paradoxa, id. 14 



— polymorpha, id. 8 



— pupeeformis, id. 12 



— rivularis, id. 9 



— Simonsi, id. 7 



— thaumasta, id. H 



Nyassomelaiiia leia, id. 31 



— Isevigatata, id. 32 



— truncatelliformis, id 31 



Obeliscella lucidissima, id. 359 



Obeliscus lucidissimus, PfeifFer 3o9 



Omalonyx explanata, H. et A. Adams 257 



Opeas gracilis, Albers 358 



Olopoma clathratulum, Pfeiffer 361 



— clausum, Sowerby 361 



Ovella sebasmia, Jousseaume 350, 358 



Paludina Jeffreysi, Frauenfeld 35 



— id., Smitb 35 



— marginata, Michaud .... 343 



— polila, Frauenfeld 34 



Partula aiiricula, Férussac 2 H 



— Dumartroyi, Souleyet 211 



— pusilla, Gould 220 



Patella lacustris, Linnaeus 68 



Patula depres-iformis, Ancey 173 



— digonopbora, id 171 



— distans, Pfeifîer 185 



— jugosa, id 178 



— prostata, Ancey 173 



