CUBAN SUBFAMILY CHONDROPOMINAE — TORRE AND BARTSCH 325 

 CHONDROPOMA (CHONDROPOMA) POEYANUM (Orbigny) 



Complete shell elongate-conic ; truncated shell very elongate-ovate. 

 Ground color ranging from flesh-color through straw-color to pale 

 brown ; the whorls are marked by interrupted spiral bands of brown. 

 Xuclear whorls almost 2, forming a somewhat truncated apex ; smooth 

 except the last portion of the last turn, which shows indication of 

 both axial and spiral sculpture. Tlie postnuclear whorls are strongly 

 rounded and narrowly shouldered, the shoulder being marked by 

 denticles of somewhat varying strength. The axial sculpture con- 

 sists of obsolete threads and incremental lines, while the spiral sculp- 

 ture consists of rather strong, distantly spaced threads. Suture nar- 

 rowly channeled. Perphery well rounded. Base short, well rounded, 

 narrowly openly umbilicated, marked by the continuation of the lines 

 of growth and spiral cords. There are also spiral cords present on 

 the umbilical wall. Aperture broadly oval ; peristome single or dou- 

 ble, when double the outer and inner one fused on the outer lip but 

 very distinct on the inner and basal lip. Operculum thin, paucispiral 

 witii the nucleus half way between submarginal and subcentral. 



Of the animal Gundlach « says : "Animal pale, head and tentacles 

 with clay-yellow coloration. Black dots are present on the side flaps 

 of the snout and upon the head and neck. The upper side of the ten- 

 tacles is blackish and their tip clay-yellow and shining. Eyes small 

 and very dark." 



This is a coastwise species that ranges from Santa Cruz del Norte 

 westward to the Cabanas Light. 



KEY TO THE SUBSPECIES OF CHONDROPOMA (CHONDROPOMA) POEYANUM 



"Whorls inflated. 



Peristome decidedly thickened , jibacoense 



Peristome not decidedly thickened occidentale 



Whorls not inflated , poeyanum 



CHONDROPOMA (CHONDROPOMA) POEYANUM JIBACOENSE, new subspecies 



Plate 30, Figure 5 



This is the easternmost representative of this species. It comes 

 from Santa Cruz del Norte, Habana Province. Here we have a 

 comparatively thin shell of pale horn-color, interruptedly spirally 

 banded or maculated with rather broad, poorly developed, and more 

 or less closely spaced denticulations at the summit. The axial sculp- 

 ture is emphasized more than in the typical race, while the spiral is 

 less developed, and this gives to the posterior portion of the whorl 



BMalakozool. Blatter, vol. 3, p. 131, 1856. 



