90 



249. Helix (Polygyra) paludosa, Pfeiffer. 



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



250. Helix (Polygyra) microdonta, Deshayes. 



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



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



251. Helix (Polygyra) notata, Poey. 



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



252. Helix (Polygyra) carpenteriana, Bland. 



11 Florida; ex c. Prof. W. Newcomb and Prof. E. C. Stearns. 



253. Helix (Polygyra) septemvolva, Say. 



14 Florida; ex c. Prof. W. Newcomb and Prof. E. C. Stearns. 



254. Helix (Polygyra) cereolus, Miihif. 



20 Florida; exc. Prof. W. Newcomb and Prof. E. C. Stearns. 



255. Helix (Polygyra) volvoxis, Parr. 



30 Georgia; ex c. Prof. W. Newcomb and Revd. E. R. Beadle. 



Sub-Genus POLYGYRELLA, Bland (type H. polygyrella, 

 Bland). 



256. Helix (Polygyrella) polygyrella, Bland. 



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



Sub-Genus OPEIOGYRA, Beck, (type H. polyyyrata, Born.) 



257. Helix (Ophiogyra) polygyrata, Bom. 



2 Brazil ; ex c. As. Soc., Bengal, and G. Nevill, Esq. 



258. Helix (Ophiogyra) helicycloides, Orbigny. 



3 Brazil (?) ; ex. c. G. Nevill, Esq. 



var. 



2 Brazil (?) ; ex c. G. Nevill, Esq. 



259. Helix (Ophiogyra) heligmoidea, Orbigny. 



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



