iiKLif'iDJ:. 203 



G. Cylindrella brooksiana, Cliuui. 



2 Cuba ; ex c. I'l-uf . W. Newcomb. 



7. Cylindrella clara. Wriglit. 



3 Cuba; ex c, l'n)f. \V. Newcouib. 



8. Cylindrella camoensis, PfciiTor. 



4 Cuba; ex o. Prof. "W. Ncwconib. 



9. Cylindrella chordata, rfciffor. 



5 S. Croix ; ox 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 caeriilans, Poey. 



4 Cuba ; ex c. I'rof . W. Newcomb. 



12. Cylindrella concreta, Gimd. 



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



13. Cylindrella costata, Guild. 



15 Barbadoes; ex c. Prof. W. Neweomb. 



14. Cylindrella crispula, Pfeiffer. 



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



15. Cylindrella discors, Poey. 



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



16. Cylindrella dominicensis, 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 elegans, Pfeiffer. 



(Type of Sub-Genus GomjyJostoma. Alb.) 



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



