CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 371 



CHONDROPOMA (CHONDROPOMORUS) DILATATUM TOROENSE, new subspecies 



Pr^vTE 34, Figure 7 



This race conies from San Felipe, Lecliuza, Monte Toro. It is 

 the largest of the known races and has the elements constituting the 

 interrupted spiral bands so much widened that they almost fuse 

 axially, forming conspicuous axial dark bands. 



The type, U.S.N.M. no. 367766, has 5.6 whorls remaining and 

 measures: Length, 16.8 mm; greater diameter, 8.6 mm; lesser 

 diameter, 7.0 mm. 



CHONDROPOMA (CHONDROPOMORUS) DILATATUM BAYATENSE, new subspecies 



Plate 34, Figuse 6 



This race was collected by Dr. Kamsden at Bayate, w^est of Monte 

 Toro. It is a small race resembling in the character of the sculpture 

 the typical G. {C.) dUatatum but differing from it in having the 

 spiral bands, comparatively speaking, much broader, in which respect 

 it stands about halfway between C. {C.) dilatatum dilatatum and 

 C. (O.) d. toroense. 



The type, U.S.N.M. no. 367768, has 5.5 whorls remaining and 

 measures: Length, 11.9 mm; greater diameter, 6.1 mm; lesser 

 diameter, 5.0 mm. 



CHONDROPOMA (CHONDROPOMORUS) DILATATUM PILOTENSE, new subspecies 



Plate 34, Figure 4 



This subspecies comes from Pilote, Arriba, Mayari. It differs 

 from all the others by having both the axial and spiral sculpture 

 much coarser and more netlike with the denticles at the summit much 

 heavier. 



The type, U.S.N.M. no. 367767, is a complete specimen of seven 

 whorls and measures: Length, 13.2 mm; greater diameter, 6.4 mm; 

 lesser diameter, 5.5 mm. 



CHONDROPOMA (CHONDROPOMORUS) DILATATUM SUBDILATATUM, new subspecies 



Plate 34, Figxjre 8 



The type of this race comes from Guajenal, Sagua de Tanamo. We 

 also have it from El Coco, Sagua de Tanamo. 



It differs from typical C. {C.) dilatatum dilatatum^ with which it 

 agrees in size, in having both the axial and spiral sculpture coarser 

 but not so coarse as in G . [G .) dUatatum fiJotense. The denticles at 

 the summit, too, stand about half way between these two forms, while 

 the outer peristome is much more expanded than in any of the others. 



