302 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



CHONDROTHYRETES GUNDLACHI GUNDLACHI (Aranso) 



Plate 22, Figure 6 



1862. Cyclostoma (Chondropoma) gundlachi Arango, Journ. Conchyl., vol. 10, 

 pp. 408-409. 



This subspecies occupies the Sierra de Paso Real. 



The specimen figured, U.S.N.M. no. 492947, is a complete specimen 

 having 7.0 whorls and measures : Length, 23.5 mm ; greater diameter, 

 15.8 mm ; lesser diameter, 11,0 mm. 



It is easily distinguished from all the other races by the fact that 

 the spiral threads are white, w^hile the rest of the shell is dark in 

 color. 



CHONDROTHYRETES GUNDLACHI GUANENSIS, new subspecies 



Plate 22, Figure 3 



In this race, which comes from the Sierra de Guane, the spiral 

 threads are slightly darker than the rest of the shell, and the peri- 

 stome is white. This, however, does not give to the surface of the 

 shell a conspicuously banded appearance. 



The type, U.S.N.M. no. 492948, has 3.5 whorls remaining and meas- 

 ures: Length, 26.5 mm; greater diameter, 18.8 mm; lesser diameter, 

 13.3 mm. 



CHONDROTHYRETES GUNDLACHI PORTICOLA, new subspecies 

 Plate 22, Figube ;l 



In this race, which comes from Portales, the shell is marked by 

 conspicuous, interrupted, rather broad spiral bands, which give it a 

 mottled and marbled aspect. The outer peristome is decidedly 

 rayed. 



The type, U.S.N.M. no. 492949, is a complete specimen having 6.4 

 whorls and measures : Length, 24.5 mm ; greater diameter, 16.0 mm ; 

 lesser diameter, 11.6 mm. 



These characters conspicuously differentiate this race from all the 

 others. 



CHONDROTHYRETES GUNDLACHI MURALLENSIS. new subspecies 



Plate 22, Figure 2 



This race, from the the Puerta de la Murallia, also has interrupted 

 spiral bands, as in C. gundlachi porticola, but they are less pro- 

 nounced, and the color scheme does not tend toward mottling or 

 marbling, as in the other subspecies. The expanded outer lip is also 

 less conspicuously rayed. 



