CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 367 



Pfeiffer cites Gibara, Nuevitas, and Holguin. Of these three 

 localities the specimens from Nuevitas satisfy Pfeiffer's descrip- 

 tion best. They also correspond with the type in size and 

 color. We shall, therefore, consider the Nuevitas race the typical 



one. 



The species ranges from Turiguano Island through the Cubitas 

 Mountains eastward to Sagua de Tanamo, breaking up into a series 

 of races described below. 



KEY TO THE SUBSPECIES OF CHONDROPOMA (CHONDROPOMORUS) CANESCENS 



Adult shell with a dark axial zone immediately within peristome 



of outer lip alleni 



Adult shell without a dark axial zone immediately within peristome 

 of outer lip. 



Shell comparatively slender nipense 



Shell not comparatively slender. 



Truncated shell short and stout perplexum 



Truncated shell rather long and less stout canescens 



CHONDROPOMA (CHONDROPOMORUS) CANESCENS CANESCENS Pfeiffer 



Plate 33, Figure 8 



1851. Chondropoma cancsrcvs Pfeiffek, Proc. Zool. Soc. London, 1851, p. 245. 

 1851. Cyclostoma confcrtum Poey, Memorias sobre historia natural de la Isla 

 de Cuba, vol. 1, pp. 99, 106, pi. 8, figs. 1-3. 



This subspecies we restrict to the race occupying Nuevitas and 

 the Cubitas Mountain region as well as the mogotes adjacent to these. 

 The truncated shell is rather long, and the whorls are inflated. The 

 sculpture is strong; the outer peristome is rather broadly expanded. 

 It differs chiefly from C. (C.) canesceiis perpleximi in being more 

 elongate. 



The specimen figured, U.S.N.M. no. 355068, comes from Loma de 

 Borje, Camaguey Province. It has 5.8 whorls remaining and meas- 

 ures: Length, 17.2 mm; greater diameter, 8.5 mm; lesser diameter, 

 6.8 mm. 



CHONDROPOMA (CHONDROPOMORUS) CANESCENS PEKPLEXUM. new subspecies 



Plate 33, Figure 7 



This race occupies the region about Gibara and Holguin. 



It most nearly resembles the typical race, C. (C.) ca7iescens 

 canescens but differs from it in the truncated shell being shorter and 

 in being a little more heavily denticulated at the summit, with the 

 outer peristome a little less strongly expanded. 



The type, U.S.N.M. no. 355062, comes from Holguin. It has al- 

 most 5 whorls remaining and measures: Length, 14.2 mm; greater 

 diameter, 7.0 mm; lesser diameter, 5.9 mm. 



