CUBAN SUBFAMILY CHONDROPOMINAE — TORRE AND BARTSCH 303 



The type, U.S.N.M. no. 367880, has 4.8 whorls remaining and meas- 

 ures: Length, 27.0 mm; greater diameter, 16.6 mm; lesser diameter, 

 12.1 mm. 



CHONDROTHYRETES GUNDLACHI DEVIATA, new subspecies 



Plate 22, Figure 4 



In the caves of the mogotes on the south side of the road leading 

 from Luis Lazo to Guane, and separated from the Sierra de Guane 

 by the Rio Portales, Bartsch collected a lot of shells that have finer 

 sculpture than the other races and that may have the spiral threads 

 brown. These vary from white to yellow, unicolor or spirally feebly 

 banded. The peristome is white, at times weakly rayed. 



The type, U.S.N.M. no. 387907, collected as above stated, is a com- 

 plete specimen, having 6.5 whorls and measuring : Length, 25.6 mm ; 

 greater diameter, 16.7 mm; lesser diameter, 12.6 mm. 



CHONDROTHYRETES AFFINIS, new species 



Plate 21, Figube 9 



1863. Chotidropoma gundlachi PrEiFrEB, Malakozool. Blatter, vol. 10, p. 182 (in 

 part). 



Shell large, thin, ovate-turreted. The early whorls are dark brown, 

 paling gradually anteriorly to buff on the last turn. Peristome whit«. 

 At more or less regular intervals there are white or light axial zones, 

 and the spiral threads are also light, so that the combination of these 

 two light elements against the dark background lends to the shell 

 a very peculiar fenestrated pattern. Nuclear whorls 2, strongly 

 rounded, smooth. Postnuclear whorls inflated, strongly rounded, 

 and marked by numerous, hairlike, decidedly retractively slanting, 

 axial threads. The spiral sculpture consists of alternating stronger 

 and heavier threads; the lighter threads are about equal to the axial 

 and the heavier are at least twice the size of the lesser. The latter 

 are rendered beautifully beaded by the axial sculpture. Suture 

 strongly constricted. Periphery of the last whorl inflated and 

 strongly rounded. Base inflated and strongly rounded and marked 

 like the spire. Aperture broadly oval. Peristome double, the inner 

 slightly exserted and reflected; the outer more or less broadly ex- 

 panded, fluted, and marked by fine concentric lines. The outer peri- 

 stome is cut on the middle of the inner lip posterior to which it is 

 reflected over the umbilicus and parietal wall. The breathing pore 

 is on the parietal wall near the posterior angle of the aperture at a 

 little distance behind the peristome. Operculum with subcentral 

 nucleus. The outside of the last whorl is covered by a rather thick 

 deposit of fine calcareous granules, which are somewhat fluted. 



