10 



Fam. Cyclostomacea. 



337 Cyclophorus Stainlorthii Sow. 



338 zebra Grat. 339 philippinarum Sow. 



340 punctatus Grat. (irroratum Sow.) China. 



341 canaliferus Sow. 342 Woodianus Lea. 

 343 sp. 344 volvulus Miill. 



345 involvuJus Miill. 



346 Pterocyclus hispidus Pearson. 



347 Platysloma jamaicense Ch. 



348 mexicanum Mke. 



349 CycJostoma scabriculum Sow. 



350 Humphryanum Pfr. 



351 Grayariiim Pfr. 



352 me^achilum Pot. & Mich. 



353 ruftlabrum Bk. 



354 Megalomastoma cylindraceum Ch. 



355 Pupina ??randis Gray. 



356 fusca Gray. 



357 Trochatella Tankervillei Gray. 



358 pulchella Gray. 



359 Helicina aurecla Fer. 



360 major Gray. 



361 Brownii Gray. 



362 Hollandi Ad. 



363 citrina Grat. 



364 neritella Lam. 



365 Proserpiiia nitida Guild. 



Fam. Ampullariadæ. 



366 Lanistes olivaceus Sw. 



367 Sylvicola cornu arietis L. 

 868 liiteostoma (AmpuU.) Sw. 



369 Ampullaria violacea Val. Mejico. 



370 carinata Sw. 371 sp. 



Fam. Littorinidæ. 

 372 Vivipai'iis integer (Palud.) Say. 



