328 PROCEEDINGS OF THE XATIOXAL MUSEUM vol. 85 



pits. Suture not channeled. Periphery of the Last whorl strongly 

 rounded. Base narrowly, openly umbilicated, slightly inflated, w^ell 

 rounded, and marked by the continuation of the axial riblets, which 

 here become intensified, and spiral threads equaling those on the 

 spire in strength; within the umbilicus, however, these become a little 

 weaker and more closely spaced. On the base proper the junctions 

 of the axial ribs and spiral threads form slender nodules. Aperture 

 broadly ovate; peristome double, conspicuously expanded all around, 

 the outer forming a rather strong auricle at the posterior angle, less 

 expanded on the posterior half of the outer lip than on the rest, 

 and most expanded on the basal half of the inner lip ; the entire outer 

 peristome shows wavy concentric lines; the outer peristome is adnate 

 to the preceding turn on the parietal wall; the inner peristome is 

 somewhat exserted and distinct all around. Operculum thin, pau- 

 cispiral, with the nucleus lialfway between submarginal and subcen- 

 tral, the outside covered with a thin deposit of fine calcareous 

 granules. 



Field notes by Bartsch made on July 27, 1928, describe the animal 

 as follows: 



Dorsum pale gray, semitranslucent, with innumerable minute white 

 spots, which are most concentrated al)out the base of the tentacles 

 and render this area paler than the rest. Edge of snout with a faint 

 olive tinge. Tentacles orange with huffish tip, the latter not ex- 

 panded. Sides of body and sole of foot gray, with olivaceous tinge. 

 Sole deeply medially cleft; wave motion of the two sides alternate. 



The type, U.S.N.M. no. 493032, was collected by John B. Henderson 

 on the north slope of the Sierra de Anafe, Pinar del Rio. It has 

 a little more than 3 whorls and measures : Length, 16.6 mm ; greater 

 diameter, 9.6 mm ; lesser diameter, 7.9 mm. 



The Sierra Anafe has furnished a number of interesting species, 

 and this is another. 



The expanded peristome and auriculation at the posterior angle 

 readily distinguish this from the other species that group around 

 picfvm^ pfeifferiamim^ poeyanum, and lemheyi. 



This suggests Chondrojmma {Ghondropoma) cdbrerai but is at 

 once distinguished in having the whorls much more inflated and much 

 weaker sculpture and in having the posterior angle less conspicuously 

 auriculate. 



CHONDROPOMA (CHONDROPOMA) CABRERAI, new species 



Plate 30, Figube 9 



Shell elongate-conic, the truncated form has almost a cylindric ap- 

 pearance, pale horn ground color, marked by distantly spaced, inter- 



