248 UROCOPTIS, S. G. GONGYLOSTOMA. 



Distinct by its smooth surface, white streaks, the long, 

 costulate neck, and wide lip. The specimens figured are 

 from Cerro de Cabras, received from Arango. 



Var. BREVICERVIX Pils., n. v. PL 57, fig. 44. 



Shell shorter than U. hidalgoi, the last whorl hardly de- 

 scending, the neck short; surface almost lustreless, sparsely 

 and irregularly, obliquely ribbed, and with conspicuous sub- 

 sutural whitish nodes ; the neck ribbed as in hidalgoi. Aper- 

 ture brown within. Axis bilamellate, the lamellae about 

 equal. 



Length 12, diam. 2.7 mm.; whorls 9 l / 2 . 



Length 11.2, diam. 2.7 mm. ; whorls 8y 2 . 



Pinar del Rio: "Mogotes del Cerro de Cabras," on the 

 plantation "Vega de Curull" (Arango). 



Cyl. hidalgoi var., ARANGO, Contrib., p. 277. 



The axis is similar to that of U. hidalgoi, bearing two sub- 

 equal lamellae in all the whorls but the last one. 



127. U. GONZALEZI Pilsbry, n. sp. PI. 57, fig. 43. 



Shell small, tapering from the last or the penult, whorl to 

 the rather wide apical truncation, glossy, brown-corneous, 

 subtransparent, splashed with milk-white in streaks. Smooth, 

 with some irregular wrinkles or a few very wide-spaced rib- 

 lets, the latter half of the last whorl ribbed. Suture crenate 

 with white nodes. Whorls convex, the last shortly free, only 

 slightly descending. Aperture rounded, the white lip flatly 

 reflexed. Axis slender, encircled by a single, thin, sub-basal 

 lamella. 

 - Length 10.3, diam. 2.3 mm. ; whorls 9y 2 . 



Length 9, diam. 2.2 mm. ; whorls 8. 



Ceja de Poncio, Pinar del Rio (Arango). 



Similar to U. hidalgoi, but more tapering, with the neck 

 short, and having only one axial lamella. 



128. U. JOAQUINI Pilsbry, n. sp. PL 64, figs. 5, 6. 



Shell subcylindric, slowly tapering above to a wide trun- 

 cation, thin, brown, either uniform or with white patches or 



