22 BULLETIN 192, UNITED STATES NATIONAL MUSEUM 



CHONDBOPOMA (CH0NDB0P03I0KUS) CABICAE CARICAE Pfeiflfer 



Plate 3, Figure 2 



1858. Chondropoma caricae Pfeiffer, Malakozool. Blatter, vol. 5, p. 142. 

 1920. Chondropoma (Chondropomorus) caricae Henderson and Bartsch, Proc. 

 U. S. Nat. Mus., vol. 58, p. 61. 



This, the typical subspecies, comes from Santiago, Dominican Re- 

 pubUc. 



The shell is marked by numerous feebly expressed, small, brown spots. 

 The ribs are comparatively distantly spaced, forming strong tufts at 

 the summit, and the last whorl is adnate to the preceding turn. 



The specimen figured (U.S.N.M. No. 193590) has 5 whorls remaining 

 and measures: Length, 11.2 mm.; greater diameter, 5.9 mm.; lesser 

 diameter, 4.5 mm. 



The rather distant ribbing will differentiate it from Chondropoma 

 (Chondropomorus) caricae navarretense. 



CHONDBOPOMA (CHONDROPOMORUS) CABICA£ NAVARB£T£NS£, 



new subspecies 



Plate 3, Figure 5 



This race was collected by Dr. W, L. Abbott above Navarrete Sta- 

 tion on the railroad running from Puerto Plata to Santiago, Dominican 

 Republic. 



In this race we have the axial ribs very closely spaced, in which 

 respect it resembles Chondropoma (Chondropomorus) caricae sosuense, 

 from which it is at once distinguished by its much more feeble tufts and 

 by having the last whorl adnate to the preceding turn. 



The type (U.S.N.M. No. 471990) has 5 whorls remaining and meas- 

 ures: Length, 12.2 mm.; greater diameter, 6.3 mm.; lesser diameter, 

 4.8 mm. 



Subgenus Chondropomium Henderson and Bartsch 



1920. Chondropomium Henderson and Bartsch, Proc. U. S. Nat. Mus., vol. 58, 

 p. 60. 



Shell varying in shape from ovate to elongate-conic, marked by axial 

 ribs on spire and base. Spiral sculpture absent except on the umbilical 

 wall, where spiral cords are present. Operculum typically chondropomoid. 



Type species : Chondropoma weinlandi Pfeiffer = Chondropoma 

 (Chondropomiimi) swiftii weinlandi Pfeiffer. 



KEY TO THE HISPANIOLAN SPECIES OF THE SUBGENUS CHONDROPOMTUM 



Peristome single. 



Outer lip strongly expanded and thickened superbum 



Outer lip not strongly expanded or thickened. 



Shell elongate-ovate swiftii 



Shell elongate-conic vermiculatum 



