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Macroceramus Joannis Pfr. 
— Shuttleworthi Mart. 
Cylindrella pallida Guildg. Jamaica, 
St. Thomas. 
— Riisei Pfr. 
— portoricensis Pfr. 
?— collaris Fer. Guadeloupe, 
Martinique. 
Simpulopsis portoricensis Shuttl. 
Gaeotis flavolineata Shuttl. 
— nigrolineata Shuttl. 
— albopunctulata Shuttl. 
Leptinaria stylodon Shuttl. 
— opalescens Shuttl. 
— antillarum Shuttl. Tortola, 
Guadeloupe Trinidad. 
Suceinea Rüsei Pfr. 
— approximans Shuttl. 
—. hyalina Shuttl. 
Vaginulus occidentalis Desh. 
St. Vincent, 
Limnaea cubensis Pfr. 
Physa rivalis Maton. 
Planorbis guadeloupensis Sow. 
— tumidus Pfr. 
— Schrammi Pfr. 
— albicans Pfr. 
— circumlineatus Shuttl. 
— Macnabianus C. B. Ad. 
— lueidus Pfr. 
— Haldemanni ©. B. Ad. 
Ancylus odscurus Hald. 
— Beaui Brug. 
Melampus coffeus Lam. 
— pusillus Gmel. 
— flavus Gmel. 
— cingulatus Pfr. 
Pedipes mirabilis Mühlf. 
Truncatella pulchella Pfr. 
— subeylindrica Gray. 
— clathrus Lowe. 
Choanopoma decussatum Lam. 
Vieque. 
— senticosum Shuttl, Vieque. 
Cistula lineolata Pfr. 
— aguadillensis Pfr. 
— Riisei Pfr. 
Cyelotus sp, indet. 
Chondropoma terebra Pfr. 
— Swifti Pfr. 
— Blauneri Shuttl. 
— Newtoni Shuttl. 
— Neweombianum Ad. St. Thomas, 
St. Jan. 
Megalomastoma eylindraceum 
Chemn. 
— Hjalmarsoni Pfr. 
— croceum Gmel. 
— verruculosum Shuttl. 
Stoastoma portoricense Pfr. . 
Helieina fasciata Lam. Antillen. 
— foveata Pfr. St. Thomas. 
— Hjalmarsoni Pfr, 
— phasianella Sow. 
— striata Lam. Vieque. 
— subfusca Mke. St. Thomas. 
— trochulina d’Orb. ? Cuba. 
— umbonata Shuttl. 
— vinosa Shuttl. Vieque. 
Hydrobia cerystallina Pfr. 
Neritina punctulata Lam. 
— reclivata Sow. 
— virginea Lam. 
var. Listeri Pfr. 
— turriculata Mke. 
— pupa L. 
— viridis L. 
Dreissena Riisei Dkr. 
Cyrenoidea Americana Morel, 
