CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 379 



CHONDROPOMA (CHONDROPOMISCA) UNILABIATUM DUNKERI (Arango) Pfeiffer 



Plate 39, Fiqube 4 



1866. Chondropoma dunkeri (Akango) Pfeiffer, Malakozool. Bliitter, vol. 

 13, p. 63. 



This subspecies comes from Cayojuin near Baracoa. Here the 

 outer lip lacks the axial orange band within the aperture ; the spiral 

 sculpture is also a little stronger than in the other races. 



The si^ecimen described and figured, U.S.N.M. no. 354939, a topo- 

 type, collected by Arango at Cayojuin, has 4 whorls remaining and 

 measures: Length, 9.5 mm; greater diameter, 6.3 mm; lesser diam- 

 eter, 5.2 mm. 



CHONDROPOMA (CHONDROPOMISCA) SOLIDULUM (Gundlach) Pfeiffer 



Shell small, when truncated ovate, of flesh-colored or pale yellow 

 ground color, marked with rather distantly spaced dots of brown, 

 which form interrupted spiral bands and axial zones, for the dots 

 are arranged in both spiral and axial series. Nuclear whorls 2, 

 smooth, well rounded, forming a somewhat truncated apex. Post- 

 nuclear whorls narrowly shouldered at the summit, the early ones 

 marked by slender axial riblets, which are retractively slanting and 

 feeble spiral threads. On the succeeding whorls the spiral threads 

 gain in strength until they equal or even excel the axial riblets and 

 form at their junction with the axial riblets conspicuous oval nodules, 

 which have their long axis parallel with the axial sculpture. The 

 axial ribs on the major portion of the turns are not quite so wide 

 as the spaces that separate them and they rather conspicuously 

 crenulate the channeled suture. Periphery well rounded ; base short, 

 moderately openly umbilicated, and marked by the continuation of 

 the axial ribs and spiral cords equaling those on the spire. The 

 umbilical wall is also marked by spiral cords and the continuation of 

 the axial ribs. Aperture broadly oval; peristome double, the outer 

 and inner fused at the edge except on the parietal wall and the 

 posterior angle of the aperture where they show distinctness. The 

 peristome is slightly expanded on the outer lip and adnate to the 

 preceding turn on the parietal wall. Operculum paucispiral, with 

 the outside covered with a thin deposit of calcareous granules. 



Of this species Gundlach says : "On the seashore at Baracoa, under 

 rocks and dried leaves of Cocoloba. Animal whitish with white dots 

 which are fused on the side into spots, and other dots of black on the 

 neck, head and snout. Head reddish within. Tentacles with their 

 base rose-red, turning gray toward the tip wliich is thickened and 

 quite dark." 



This species ranges from Baracoa westward along the coast through 

 Sagua de Tanamo to Vita, breaking up into several subspecies. 



