CUBAN SUBFAMILY CHONDROPOMINAE TORRE AND BARTSCH 393 



lesser diameter, 8.0 mm. It comes from Altos de los Negros, Sierra 

 Maestra, Oriente Province. 



This species resembles C\ {G.) guisaense in its general shape and 

 sculpture but is at once distinguished by its very broadly expanded 

 outer peristome. 



CHONDROPOMA (GUTIERREZIUM) GUISAENSE, new species 



Plate 38, Figure 1 



Shell very broadly ovate, flesh-colored, with interrupted bands of 

 brown: the elements composing these are arranged in both axial 

 and spiral series. Xuclear whorls decollated. Postnuclear whorls 

 inflated, strongly rounded, narrowly shouldered at the summit, 

 marked by slender, somewhat retractively slanting axial riblets, which 

 are more distantly spaced on the early whorls than on the last. 

 On this they form serrulations at the summit. The spiral sculp- 

 ture consists of the merest indications of basal threads. Suture 

 strongly impressed, slightly channeled for one-third of a turn behind 

 the aperture. Periphery inflated, strongly rounded and marked like 

 the spire. Base short, inflated, strongly rounded and marked by 

 the continuation of the axial riblets. The broadly open umbilicus 

 shows fairly strong spiral cords on the umbilical wall. Aperture 

 broadly ovate, slightly auriculated at the posterior angle; peristome 

 double, the outer moderately broadly expanded; the inner also ex- 

 panded a little more than half as wide as the outer and reflected 

 over and appressed to it, projecting but slightly above it. Peristome 

 a little narrower on the parietal wall than on the rest of the aperture, 

 separated in the unique type from the preceding whorl. 



The type, U.S.N.M. no. 367816, was collected by Dr. de la Torre 

 at the hill nearest to Guisa, southeast of Bayamo. It has 3.8 whorls 

 remaining and measures: Length, 17.0 mm; greater diameter, 12.5 

 mm; lesser diameter, 9.8 mm. 



This species in type of sculpture resembles C. (O.) montanum 

 but is at once distinguished from this by its much narrower outer 

 peristome. 



CHONDROPOMA (GUTIERREZIUM) GUTIERREZI (Gundlach) 



Shell ovoid-conic, flesh-color or pale horn-color, with interrupted 

 lines of brown arranged so as to form both axial and spiral series. 

 Nuclear whorls 1.8, well rounded, minutely granulose. Postnuclear 

 whorls well rounded, narrowly shouldered at the summit, with a 

 short channel in the suture immediately behind the summit on the 

 last turn. The whorls are marked by rather strong sublamellar, 

 narrow, somewhat sinuous, irregularly developed, and irregularly 



