216 PROCEEDINGS OF THE NATIOXAL MUSEUM vol. 85 



KEY TO THE SUBSPECIES OF CHONDROPOMETES (CHONDROTHYROMA) EXQUISITUM 



Shell banded. 



Shell red or reddish. 



Spiral bands strongly expressed punctolineatum 



Spiral bands feebly expressed exquisitum 



Shell flesh-color notatum 



Shell not banded cereum 



CHONDROPOMETES (CHONDROTHYROMA) EXQUISITUM PUNCTOLINEATUM, new 



subspecies 



Plate 11, Figure 15 



This race was collected by Natenson on Mogote Grande, which lies 

 near the Sierra Guacamayas at its southwestern extremity. The shells 

 from here are a little larger than typical C. (C.) exquisitum and are 

 decidedly spirally lined with dark brown. These lines become intensi- 

 fied and broadened in axial series and so lend a varicial aspect to the 

 color scheme. 



The type, U.S.N.M. no. 468940, a complete specimen, has 6.0 whorls 

 and measures: Length, 20.3 mm; greater diameter, 18.3 mm; lesser 

 diameter, 12.8 mm. 



CHONDROPOMETES (CHONDROTHYROMA) EXQUISITUM EXQUISITUM, new subspecies 



Plate 11, Figure 14 



This race ranges through the Sierra la Guira from San Diego cle los 

 Banos to the Abra Caiguanabo. Most specimens are bright orange- 

 red, but the color ranges from this to yellow ; there is always a dark 

 axial band behind the expanded white peristome. "While the shell 

 appears unicolor, it is nevertheless obscurely banded. The spiral 

 markings are usually reduced to mere elongate dots, which are 

 arranged in axial series. 



Tlie type, U.S.N.M. no. 468722, is a complete specimen, having 6.1 

 whorls, and comes from the west end of the Sierra la Guira. It 

 measures: Length, 19.7 mm; greater diameter, 16.0 mm; lesser diame- 

 ter, 14,1 mm, 



CHONDROPOMETES (CHONDROTHYROMA) EXQUISITUM NOTATUM. new subspecies 



Plai-e 11, Figure 11 



Sh.ell white, except for a dark purplish axial band immediately be- 

 hind the aperture and slender, interrupted, but distinct, spiral bands 

 of brown ; peristome white. 



The type, U.S.N.M. no, 428803, was collected near the Cueva Oscura 

 del rio Caiguanabo at Los Portales. It is an almost complete speci- 



