CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 399 



The type, U.S.N.M. no. 367833, has 3.4 whorls remaiiimg and 

 measures: Length, 14.1 nnn; greater diameter, 10.1 mm; lesser 

 diameter, 8.0 mm. 



CHONDROTHYRIUM VIOLACEUM ATKINSI, new subspecies 



Plate 28, Figure 15 



This race comes from Soledad. It is a pale race of rather broadly 

 ovate outline with comparatively narrow umbilicus, lacking the inter- 

 rupted spiral bands. It is nearest to C. v. serranum, from which it 

 can be readily distinguished by its more inflated whorls and finer 

 tuberculation. 



The type, U.S.N.M. no. 355018, has 4.3 whorls remaining and 

 measures: Length, 19.4 mm; greater diameter, 11.8 mm; lesser 

 diameter, 9.2 mm. 



CHONDROTHYRIUM VIOLACEUM DOLORESI, new subspecies 



Plate 28, Figure 3 



This race comes from between Guabairo and Dolores. It is of 

 broadly ovate outline with widely open umbilicus, lacking the inter- 

 rupted spiral bands of brown. It resembles C. violaceum saugeti but 

 differs from this in having the shell heavier and the sculpture much 

 coarser. 



The type, U.S.N.M. no. 367826, has 3.5 whorls remaining and meas- 

 ures: Length, 12.0 mm; greater diameter, 10.4 mm; lesser diameter, 

 7.6 mm. 



CHONDROTHYRIUM VIOLACEUM VIOLACEUM (Pfeiffer) 



Plate 28, Figure 19 

 1S51. Cyclostoma violaceum Pfeiffer, Proc. Zool. Soc. Loudon, 1851, pp. 245-24G. 



In this, the typical race, which we recognize in specimens from 

 Trinidad and La Pastora, the shell is elongate-ovate, of yellowish 

 buff color, with moderately strong interrupted spiral bands of brown. 

 Here the tubercles on the penultimate whorl are not strong but cor- 

 respond to those of the preceding turns. 



The specimen described and figured, U.S.N.M. no. 104493, has 4.5 

 whorls remaining and measures : Length, 20.0 mm ; greater diameter, 

 12.1 mm; lesser diameter, 9.7 mm. 



CHONDROTHYRIUM VIOLACEUM MORTEI, new species 



Plate 28, Figure 4 



This race, which was collected by Dr. de la Torre, comes from 

 Nazimiento del Kio Caballero, near Trinidad. It has the whorls a 



