[32] 



Stenogyra are represented bj peculiar species,— 06e?/5cw5 bj 

 S. gigas, Poey, Melaniella by aS'. acuticostata, Orb., Pseudohalea 

 by aS'. /msi^a, Pfr., found also in Haiti and Porto Rico. 



Strophia, {P. mumia, Brug.,) subgenus of Pupa, has its chief 

 development in Cuba and the Bahamas, and is found in the 

 Haiti and Porto Rico subprovinces, but not in Jamaica. 



Macroceramus has the greatest number and most varied 

 forms (if. Pazi, Gund., M. claudens, Gund., if. turricula, Pfr.,) 

 in Cuba. Albers places Cylindrella tnrquata, Morel., with 

 other species in Anoma, subgenus of Macroceramus, but with 

 doubtful propriety. Whether the buccal plate is present as 

 in Macroceramus, or wanting as in Cylindrella, I am not in- 

 formed; but C.'torquata and its immediate allies have re- 

 volving laminae on the axis, as is common in the latter genus^ 

 but only known in M. amplus, Gund., which, however, may 

 be a Cylindrella, as I have elsewhere suggested (Ann. Lye. N. 

 Y., Vlil., p. 163.) Macroceramus is also found in the Baha- 

 mas, but not in the Bermudas. 



Pineria, established by Poey for two species found in the 

 Isle of Pines, allied to Macroceramus, but placed by Pfeiffer 

 in Bulimus, is adopted by Albers as a subgenus of Pupa. A 

 Guadeloupe species is described ns Helix Schraonmihy Fischer. 

 B. Viequensis, Pfr., of Vieque in the Porto Rico subprovince, 

 and of Barbadoes in the Guadeloupe subprovince, belong to 

 Pineria. 



In the Cuban subprovince, indeed in the Islands generally, 

 there is a marked absence of Eastern North American forms 

 of Helix. Albers has two in Polygyra, (a subgenus charac- 

 teristic of Mexico and the Southern United States;) of one H. 

 auricnlatay Say, is the type, and H. septemvolva, Say, of the 

 other. The only insular representatives are of the former, ^. 

 notata, Poey, of Cuba; of the latter, H.paludosa, Plr., of that 

 Island and Jamaica, and H. microdonta, Desh., of the Baha- 

 mas and Bermuda. 



The inoperculated land-shell faunas of Cuba, Jamaica and 

 Haiti have special generic relations with that of Mexico and 

 Central America, as shown by the distribution of species of 

 Glandina, Spiraxis and Cylindrella, but different subgenera 

 are developed on the Continent and Islands. Of the first, the 

 subgenus Glandina {G. Soiverbyana, Pfr.) prevails on the for- 

 mer, but Oleacina {G.oleacea, Per.) in Cuba, and Varicella {G. 

 leucozonias, Walch) in Jamaica. Stre.p)tostyla (S. Nicoleti, Shutt.), 

 subgenus of Spiraxis, is continental, while Ghesomiira? is 

 represented in Cuba, and Euspiraxis [S. costulosa, C. B. Ad.) 

 in Jamaica. I should remark that S. Cubaniana, Orb., and S. 

 episcopalis, Morel., of Cuba, appear to me to be improperly 

 placed by Albers in Oleacina. 



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