348 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



The species apparently ran<res along the shoreline from Cayo 

 Carenas of Cienfuegos Bay to Corrientes Bay at the west end of the 

 island. It was also found present on Cayo Cantilles, east of the Isle 

 of Pines. A number of races are recognizable. 



KEY TO THE SUBSPECIES OF CHRONDROPOMA (CHONDROPOMA) CARENASENSE 



Diameter of sLell more than 7 mm. 



Peristome white. 



Sculpture very fine toroense 



Sculpture not very fine carenasense 



Peristome yellow corrientesense 



Diameter of shell less than 6 mm. 



Peristome white. 



Sculpture very fine guauraboense 



Sculpture not very fine rosariense 



Peristome yellow , cantillense 



CHONDROPOMA (CHONDROPOMA) CARENASENSE TOROENSE, new subspecies 

 Plate 32, Figuke 3 



This subspecies, wdiich comes from Cabeza del Toro near Bahia de 

 Cochinos, resembles in general shape C. {G.) carenasense carenasense 

 but is even more globose, with the axial ribs much more closely ap- 

 proximated, the spiral sculpture with many more threads, and the 

 interrupted spiral lines more numerous. 



The type, U.S.N.M. no. 367796, has 4 whorls remaining and meas- 

 ures: Length, 13.0 mm; greater diameter, 8.0 mm; lesser diameter, 

 6.5 mm. 



CHONDROPOMA (CHONDROPOMA) CARENASENSE CARENASENSE Pilsbry and 



Henderson 



Plate 32, Figure 2 



1912. Cltondropoma carenasense Pilsbry and Henderson, Nautilus, vol. 26, 

 p. 44. 



This race comes from Cayo Carenas and the adjacent mainland. 

 Here the shells are large, flesh-color or white, with the interrupted 

 spiral bands forming axial streaks tliat are more conspicuous than the 

 spiral lines. The sculpture is more pronounced than in any of the 

 other races, the intersection of the axial ribs and spiral threads form- 

 ing well-defined cusps. 



A cotype, U.S.N.M. no. 493151, has 4.5 whorls remaining and meas- 

 ures: Length, 14.2 mm; greater diameter, 8.0 mm; lesser diameter, 

 7.2 mm. 



CHONDROPOMA (CHONDROPOMA) CARENASENSE CORRIENTESENSE, new subspecies 



Pl.\te 32, Figure 1 



This race, which comes from Corrientes Bay at tlie western end of 

 Cuba, is as large as C. (C.) carenasense carenasense^ but the shells 



