HISPANIOLAN AND BAHAMAN ANNULARHDAE 7 



Subgenus Chondropomorus Henderson and Bartsch 



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

 p. 61. 



Shell elongate-conic, marked with both axial and spiral threads on 

 spire and base ; the axial threads are gathered into tufts at the summits 

 of the whorls. 



Type species : Cyclostoma dentatum Say == Chondropoma (Chondro- 

 pomorus) dentatum (Say). 



KEY TO THE HISPANIOLAN SPECIES OF THE SUBGENUS CHONDROPOMORUS 



Shell broadly conic. 



Peristome of inner lip expanded salleanum 



Peristome of inner lip not expanded litturatum 



Shell elongate-conic. 



Axial sculpture fine and feeble. 



Shell elongate-ovate hemiotum 



Shell subcylindric simplex 



Axial sculpture not fine and feeble. 

 Peristome simple. 



Whorls feebly rounded olssoni 



Whorls well rounded. 



Tufts at summit of whorls coarse and irregular., moronense 



Tufts at summit of whorls fine and regular pilsbryi 



Peristome double. 



Outer peristome broadly expanded gnote 



Outer peristome not broadly expanded. 



Shell stout coroni 



Shell slender. 



Shell brightly colored petitianum 



Shell dull caricae 



CHONDROPOMA (CHONDBOPOMORU8) Si\IiI.EANUM (Pfeiffer) 



Shell rather large, ground color flesh-colored, with numerous dots, 

 streaks, dashes, flammulations, or bands of brown, which are arranged 

 in more or less axial and spiral series. There is a rather broad dark 

 brown spiral band a little anterior to the periphery, and several of a 

 weaker color on the umbilical wall. The peristome is marked by alternate 

 zones of the ground color and spiral bands of brown. Nuclear whorls 

 a little more than 2, forming a somewhat truncated apex, all but the 

 last portion of the last smooth, the latter marked by faint axial threads. 

 The postnuclear whorls are strongly rounded and marked by somewhat 

 retractively slanting, slender ribs, which are frequently of double series, 

 that is, a strong rib followed by several fainter threads. These ribs are 

 gathered into tufts or toothlike denticles at the summit. The spiral sculp- 

 ture consists of threads that render the axial riblets wavy and weakly 

 nodulose. On the early whorls the nodules on the stronger riblets are 

 almost spinose. Suture moderately constricted. Periphery well rounded. 



