106 HELICID^. 



Sub-Genus ISOMEEIA, Alb. (type H. areas, Koch). 



If 



432. Helix (Isomeria) oreas, Koch. 



1 New Grenada J ex. c. Damon. 



Sub-Genus POLYDONTES, Mtf. (type H. impemtor, 

 Montf.). 



433. Helix (Polydontes) imperator, Montfort. 



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



434. Helix (Polydontes) crassilabris, Pfeiffer. 



(? H. sobrina, var.) 

 1 Cuba ; ex c. Landaner. 



Sub-Genus PLEURODONTA, Fiscb. (type H. sinuata. 

 Mull.). 



435. Helix (Pleurodonta) sinuata, Miiller. 



3 Jamaica ; ex c. W. A. Brown, Esq., and Prof. W. Newcomb. 



436. Helix (Pleurodonta) sinuosa, Ferussac. 



[= H. conscmguiiiea, C. B. Ad.] 



3 Jamaica; ex c. W. A. Brown, Esq., and Prof. W. Newcomb. 



437. Helix (Pleurodonta) carmelita, Ferussac. 



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



438. Helix (Pleurodonta) anomala, Pfeifeer. 



4 Jamaica ; ex c. W. A. Brown, Esq., and Prof. W. Newcomb. 



439. Helix (Pleurodonta) peracutissima, C. B. Ad. 



4 Jamaica ; ex c. F. L. Layard, Esq., W. A. Brown, Esq., and Prof. 

 W. Newcomb. 



440. Helix (Pleurodonta) patina, C. B. Ad. 



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



441. Helix (Pleurodonta) acuta, Lamarck. 



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



442. Helix (Pleurodonta) invalida, c. B, Ad. 



1 Jamaica; ex c. F. L. Layard, Esq. 



