242 PROCEEDINGS OF THE NATIONAL. MUSEUM Vol.89 



We found this species rather widely distributed in Santa Clara 

 Province. We have seen specimens from the northeast slope of La 

 Puntilla; from the lomas de Ram(5n Martinez, between Remedios 

 and Zulueta; from Charco Maj^, north slope of Loma Platero a little 

 east of Yagiiey; Vereda del Resbalillo Cambao, near Remedios; 

 and Guajabos. 



ADAMSIELLA (CUBADAMSIELLA) LEONI. new species 



Plate 21, Figure 5 



Shell small, thin, elongate-conic, of wax yellow ground color with 

 interrupted spiral bands of brown, which are arranged in both axial and 

 spiral series. These color bands are shown within the aperture. 

 Nuclear whorls 2, forming a rather large, somewhat mammillated 

 blunt apex, with the whorls inflated, strongly rounded, and micro- 

 scopically granulose. Postnuclear whorls slightly shouldered, strongly 

 rounded, and marked by strong, distantly spaced, lamellar axial ribs, 

 which are separated by finer axial threads. These vary in number 

 from 3 to 6. The heavy axial ribs extend prominently to the summit 

 and here develop into toothlike elements. The spiral sculpture con- 

 sists of ill-defined threads, which render the axial ribs vertebrated 

 and the larger of the axial ribs scalloped at their free margin. Suture 

 strongly constricted. Periphery strongly rounded. Base short, 

 strongly rounded, very openly umbilicated, and marked by the con- 

 tinuation of the axial ribs and by feeble spiral threads. The last 

 whorl is solute for about one-half of a turn, with the outside of the 

 parietal wall marked by the continuations of the axial ribs, but with 

 no indication of spiral sculpture. Aperture circular; peristome double, 

 the outer thin, narrowly expanded and a little narrower on the parietal 

 wall than on the rest. The inner decidedly exserted and slightly 

 reflected at its free edge. Operculum thin, corneous, with almost 

 central nucleus. The whorls are provided with a strong, decidedly 

 elevated lamella at their inner edge, which is bent slightly outward at 

 the free margin. There are fine calcareous granules in the spaces 

 between the lamellae. 



The type, U.S.N.M. No. 535337, which was collected by Herman© 

 Leon at Cabezadas del Caracusey, Sierra de Gavilanes, Santa Clara 

 Province, has 5.2 whorls remaining and measures: Length, 7.1 mm.; 

 greater diameter, 4.0 mm.; lesser diameter, 3.3 mm. 



A larger specimen has 5.3 whorls remaining and measures: Length, 

 9.0 mm.; greater diameter, 4.5 mm.; lesser diameter, 3.5 mm. This 

 specimen, and the one from which the nucleus and operculum were 

 described, are listed as U.S.N.M. No. 535338. 



