6 



336 nobilior Ad. 37 leres Mke. Mexico. 



338 Pfeifferi Mke. 39 perplicata F. 



340 variegata Pfr. 41 Poeyana W. 



342 elegans Pfr. 43 seminuda Ad. 44 Riisei Pfr. 



345 rubra Ad. 46 sp. 



347 Apoma elongata Ch. 48 gracilis Wood. 



349 Lia Maugeri Gray. 50 var alba. 



351 Macroceramus signalus Guild. 52 Kieneri Pfr. 



353 turricula Pfr. 54 Gossei Pfr. 



Ord. 2. Hygrophila. 



355 Elobium auris midse L. 56 auris jndae L. 

 357 Pythia imbrium L. 58 Lessoni Blv. 



359 Rhodostoma felis Brug. 



360 Alexia myosotis Dr. 61 Firmonii Payr. 



362 Melampus Juteus Q. & G. 63 sp. 64 minulus Gm. 



365 OphiocardeJus auslralis Q* & G. N. Zeland. 



366 ChiJina tennis Gr. 67 puelcha d'o. 



368 Limnsea emarginata Say. 69 nebutosa Dkr. 

 370 Vahlii B. 71 var. 72 geiserieola B. Island. 



373 Amphipeplea ampullacea Rm. 



374 Physa jamaicensis Ad. 75 canariensis d'o. 

 376 cubensis Pfr. 77 miens Ph. Mex. 



378 heterostropha Say* 79 ancillaria Say. 



380 Maugerse Gr. 81 sp. 



381*Planorbis glabratus Say. 82 campanulatus Say. 



383 affinis Ad. 84 irivolvis Say. 



385 proboscideus Mke. 86 peruvianus Br. 



387 guadelotipensis So. 88 sp. 



389 Amphibola nuxaveJJana Ch. N. Zeland. 



390 Siphonaria concinna Sow. 91 meJanozonias Gm. 

 392 Lessorii Blv. 93 pica Sow. 94 sp. 



395 Gadinia peruviana (Mouretia) Sow. Peru. (2 Cx) 



Subcl. 2. Opislhobranchia M. Edw. 



396 Bulla ampulla L. 97 striata Brg. 



398 auslralis Gr. 



399 Haminea Guildingii Sws. 400 sp. 



