CUBAN SUBFA:MILY CHOXDROPOMIXAE^ — TORRE AXD BARTSCH 327 



confluent in both directions; the partial wall is purplish brown. The 

 postnuclear whorls are well rounded, narrowly shouldered at the 

 summit, which is finely denticulated, the denticles varying in strenoth 

 and spacing in different individuals. The axial sculpture consists of 

 slender, retractively slanting threads, while the spiral consists of 

 rather strong spiral cords, of which 7 are present on the first of the 

 remaining turns, 12 on the second, and 13 on the last whorl. Suture 

 well constricted, narrowly channeled. Periphery of the last whorl 

 somewhat inflated, strongly rounded. Base strongly rounded, 

 marked by the continuation of the axial lines of growtli and spiral 

 cords, which are as strong as those on the spire. Within the umbili- 

 cus, however, the spiral cords become slightly weakened. Umbilicus 

 narrow, open. Aperture rather large, decidedly oblique. Peristome 

 double; the inner slightly exserted; the outer widely expanded all 

 around and a little more so on the columella than the rest, usually 

 adnate to the preceding turn, although in some shells it is free from 

 it, which gives to the last whorl the impression of being slightly 

 solute. Operculum thin, paucispiral, with the nucleus halfway be- 

 tween the submarginal and subcentral, covered on the outside with a 

 thin deposit of calcareous granules. 



The type, U.S.N.M. no. 367791, comes from San Antonio de los 

 Bancs. It has 4.5 whorls remaining and measures : Length, 14.6 mm ; 

 greater diameter, 17.8 mm ; lesser diameter, 6.4 mm. 



This species has probably been confused in the past with C. {G .) 

 fenidlirata Pfeiifer, which we have now been forced to make a syno- 

 nym of C. (C.) poeyanum. It occupies a range south of ffei-fferi- 

 anum in Habana Province and is easily distinguished from this by its 

 stronger sculpture and by the fact that the peristome is expanded 

 all around. 



CHONDROPOMA (CHONDROPOMA) LEONI, new species 



Plate 30, Figure 10 



The truncated shell is very elongate-ovate. Nuclear whorls decol- 

 lated in all our specimens. The remaining whorls flesh-color with 

 interrupted spiral bands of brown, of which the one at the periphery 

 is a little more conspicuous than the rest. This is usually also the 

 case in the one on the middle of the base, which almost equals it in 

 strength. The whorls remaining are well rounded, narrowly obliquely 

 shouldered at the summit, and marked by weak, retractively slanting, 

 axial threads. The spiral sculpture consists of conspicuous spiral 

 threads, of which 10 are present between summit and suture on the 

 first of the remaining whorls and 17 on the rest. The junctions of the 

 axial ribs and spiral threads form very weak indications of nodules, 

 while the spaces enclosed between them form shallow rectangular 



