56 BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



last whorl. Nuclear whorls almost 3, inflated, well rounded, smooth, 

 forming a slender apex. Postnuclear whorls inflated, well rounded, 

 very narrowly shouldered at the summit, and marked by decidedly re- 

 tractively slanting axial riblets, which are about one-half as wide as 

 the spaces that separate them, and slender spiral threads equaling the 

 axial riblets in strength and spacing. The junctions of these two elements 

 form conspicuous, almost spinose nodules. The periphery of the last 

 whorl is well rounded. The base is rather long, well rounded, moderately 

 broadly umbilicated, and marked with the same type of sculpture as 

 that characterizing the spire. The umbilical wall shows spiral threads 

 and the feeble continuation of the axial riblets. Aperture broadly pear- 

 shaped, decidedly auriculated at the posterior angle; peristome double, 

 the outer broadly flaringly expanded all around and adnate to the pre- 

 ceding turn at the parietal wall. When viewed squarely this flaring 

 peristome covers the umbilicus. The inner peristome is rather strongly 

 exserted and reflected partly over the outer, but is distinct. Operculum 

 thin, paucispiral, with a moderately strong deposit of calcareous granules. 



The type (U.S.N.M. No. 471973) was collected by Mr. and Mrs. 

 E. C. Leonard at the base of a cliff near the mouth of the Riviere des 

 Cotes de Fer between Jean Rabel and Le Mole, Haiti. It has 4.6 whorls 

 remaining and measures : Length, 14.6 mm. ; greater diameter, 8.4 mm. ; 

 lesser diameter, 6.5 mm. 



This species suggests the members of Chondropoma (Chondropoma) 

 gonavense, but its much narrower form will at once distinguish it from 

 that complex. 



U.S.N.M. No. 471974 contains 384 topotypes. 



U.S.N.M. No. 471975 contains 182 specimens collected by Mr. and 

 Mrs. E. C, Leonard at the base of a limestone cliff near Riviere des 

 Cotes de Fer, Haiti. 



U.S.N.M. No. 471976 contains 40 specimens collected by Mr. and 

 Mrs. Leonard at Bombardopolis, Haiti. 



U.S.N.M. No. 471977 contains 2 specimens collected by Mr. and Mrs. 

 Leonard west of Bombardopolis, Haiti. 



CHONDBOPOaiA (CHONDROPOMA) BLANDUM (Pfeiffer) 



Plate 9, Figure 4 



1854. Cyclostoma (Chondropoma) hlandum Pfeiffer, Proc. Zool. Soc. London, 



1852, pp. 143-144. 

 1854. Cyclostoma blandum Pfeiffer, Martini-Chemnitz Conchylien Cabinet, vol. 



1, sect. 19, p. 367, pi. 47, figs. 13, 14. 



Truncated shell ovate, translucent, whitish to brownish violet, marked 

 by interrupted spiral lines of brownish red; the elements composing 

 these lines are also arranged in axial series. The postnuclear whorls are 

 somewhat inflated, well rounded, and marked by slender, almost sub- 



