310 CYCLOSTOMACEA. 



Sub-Genus BIPLOPOMA, Pfeiffer. 



76. Cyclostoma (Diplopoma) architectonicnm, 



Gund. 

 4 Cuba; ex c. Prof. W. Newcomb. 



Genus CISTULA, Gray. 



1. Cistula agrestis, Gund. 



1 Cuba ; ey c. Prof. W. Newcomb. 



2. Cistula agassizi, Charp. 



2 Cuba ; ex c. Prof. W. Newcomb. 



3. Cistula antiguensis, Shut. 



1 Cuba; ex c. Prof. W. Newcomb. 



4. Cistula catenata, Gid. 



14 Cuba; ex c. Prof. W. Newcomb and F. L. Layard, Esq. 



5. Cistula cinclidodes, Pfeifer. 



2 Haiti ; ex c. W. A. Brown, Esq. 



6. Cistula illustris, Poey. 



1 Cuba; ex c. Prof. W. Newcomb. 



7. Cistula inculta, Poey. 



10 Cuba ; ex c. Prof. W. Newcomb and F. L. Layaj'd, Esq. 



8. Cistula largillierti, PfeifEer. 



3 Yucatan ; ex c. A. Morelet, Esq. 



9. Cistula mackinlayi, Gund. 



12 Cuba; ex c. Prof. W. Newcomb. 



lb. Cistula mordax, c. B. Adams. 



2 Jamaica ; ex c. Prof. W. Newcomb. 



2 Jamaica; coll. C. B. &A.a,ms, fide W. A. Brown, Esq. 



11. Cistula rigidula, Morelet. 



3 Yucatan ; ex c. A. Morelet, Esq. 



12. Cistula riisei, Pfeiffci-. 



2 Porto Rico ; ex o. W. A. Brown, Esq. 



