IIELICID^. 203 



6. Cylindrella brooksiana, GunJ. 



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



7. Cylindrella clara, Wright. 



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



8. Cylindrella camoensis, Pfeiffer. 



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



9. Cylindrella chordata, Pfeiffer. 



5 S. Croix; ex c. Prof. W. Newcomb. 



10. Cylindrella coUaris, Ferussac. 



5 S. Croix ; ex c. Prof. W. Newcomb. 



1 Martinique ; ex c. W. A. Brown, Esq. 



11. Cylindrella caenxlans, Poey. 



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



12. Cylindrella concreta, Gund. 



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



13. Cylindrella costata, Guild. 



15 Barbadoes j ex c. Prof. W. Newcomb . 



14. Cylindrella crispula, Pfeiffer. 



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



16. Cylindrella discors, Poey. 



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



16. Cylindrella domiaicensis, Pfeiffer. 



2 S. Domingo ; ex c. Prof. W. Newcomb and W. A. Brown, Esq. 



17. Cylindrella dunkeriana, Pfeiffer. 



1 Jamaica ; ex c. W. A. Brown, Esq. 



18. Cylindrella elegaiis, Pfeiffer. 



(Type of Sub-Genus Gongylostoma, Alb.) 



8 Bejucal, Jamaica ; ex c. Prof. W. Newcomb. 



