360 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



bands are also arranged in axial series. They are present on both 

 spire and base. Nuclear whorls decollated; postnuclear whorls well 

 rounded, narrowly shouldered at the summit, and crossed by numer- 

 ous, somewhat wavy, slender axial riblets, which are about as wide 

 as the spaces that separate them. These riblets render the summit 

 of the whorls very finely serrulated. Suture very narrowly chan- 

 neled; periphery inflated, strongly rounded. Base moderately long, 

 openly umbilicate, marked like the spire. The umbilical wall, how- 

 ever, and the region adjacent to it are marked by stronger spiral 

 threads. Aperture ovate, auriculated posteriorly. Peristome simple, 

 slightly expanded and reflected. The last turn is solute for about 

 one-tenth of a whorl. Operculum thin, corneous, paucispiral, with 

 submarginal nucleus. 



We are recognizing two subspecies. 



KEY TO THE SUBSPECIES OF CHONDROPOMA (CHONDROPOMA) EDOUARDI 



Junctions of the axial and spiral threads forming sharp cusps asperulum 



Junctions of the axial and spiral threads not forming sharp cusps edouardi 



CHONDROPOMA (CHONDROPOMA) EDOUARDI EDOUARDI Aguayo 



Plate 35, Figuke 1 



1934. Chondropoma edouardi Aguayo, Mem. Soc. Poey, vol. 8, pp. 90-91, fig. 1. 



This race, which was described by Aguayo from Loma de Canada 

 de Jagiieyes, Holguin, differs from C. (0.) edouardi asperulum in 

 the junctions of the axial riblets and spiral threads forming only 

 feeble denticulations. 



The specimen described and figured, U.S.N.M. no. 425501, which 

 was received from Aguayo, has almost 4 whorls remaining and 

 measures: Length, 14.1 mm; greater diameter, 8.4 mm; lesser diam- 

 eter, 6.8 mm. 



CHONDROPOMA (CHONDROPOMA) EDOUARDI ASPERULUM Agruayo 



Plate 35, Figure 3 



1934. Chondropoma laetum asperulum Aguayo, Mem. Soc. Poey, vol. 8, pp. 89- 

 90, fig. 2. 



This subspecies, also collected by Aguayo, comes from the Cerro 

 Colorado near Gibara. It is distinguished from C. {C.) edouardi 

 edouardi by having the junctions of the axial riblets and spiral 

 threads much more strongly cusped ; hence the name asperulum. 



The specimen described and figured, U.S.N.M. no. 425503, received 

 from Aguayo, has almost 4 whorls remaining and measures : Length 

 14.9 mm; greater diameter, 9.2 mm; lesser diameter, 7.0 mm. 



