CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 221 



CHONDROPOMETES (CHONDROTHYROMA) CONCOLOR MAGISTER, new subspecies 



PL.ATE 11, FiGUKB 8 



Shell very thin, white with a very faint yellowish tinge, marked by 

 varicial white streaks due to the fusion of several of the axial riblets. 

 The axial ribs are rather low and closely spaced. The umbilical wall 

 does not show spiral threads. 



Figure 7G. — Distribution of the subspecies of Chrondropomrfes {Chondrotlvjioina) con- 

 color: (1) concolor ; (2) viagisterj (3) fonteij (4) si>e; (5) carnicolor. 



The type, U.S.N.M. no. 36T751, was collected between Galalon and 

 Caiguanabo, without specific locality. It is a complete specimen, 

 having 6.0 whorls, and measures : Length, IQA mm ; greater diameter, 

 loA mm; lesser diameter, 10.3 mm. 



