204 UROCOPTIS, S. G. GONGYLOSTOMA. 



costulate-striate, opaque, pale corneous. Spire a little taper- 

 ing above, the 13 remaining whorls rather flattened, the last 

 shortly free in front, more strongly costulate-striate, angular 

 at the base. Aperture oblique, subcircular, the peristome 

 white, equally expanded and a little reflexed throughout. 

 Internal column with 3 lamellce in the median whorls, the 

 upper one wider; in the last whorl there are 2 lamellae 

 (Gundl. in Arango). Length 17, diam. 3 mm.; diam. apert. 

 2.5 mm. 



Western Cuba: Under stones at Sabana de Robles, near 

 Madruga, prov. of Habana. 



Cyl. stearnsi ARANGO, Contrib., p. 114 (description quoted 

 from Gundlach mss.). 



Probably belongs to Liocallonia, but the description of the 

 axis also fits some of the U. elegans group. 



73. U. PALM.E ('Gundl.' Arango). 



Differs from Cyl. blainiana by having the riblets the color 

 of the shell, and the internal colurnella 3-lamellate, the upper 

 lamella larger (while in blainiana it is nearly simple) 

 (Arango) . 



Western Cuba: Between Palma and Caiguanabo, in Pinar 

 del Rio (Wright). 



Cyl. palma? Gundl. mss., ARANGO, An. Real Acad. Cien, etc., 

 de la Habana, xii, p. 285, no. 16 (1876) ; Contrib., p. 119. 



74. U. INFORTUNATA (Arango). PI. 48, figs. 11, 14, 15. 



Shell cylindrical, the upper third tapering to a rather wide 

 truncation; thin, corneous, subtransparent. Surface glossy, 

 sculptured with thread-like riblets, separated by intervals of 

 double or three times their width, somewhat stronger on the 

 neck. Whorls convex, the last rounded below, grooved below 

 the axial chink, produced in a slightly descending neck in 

 front. Aperture circular, oblique, the lip thin, narrowly 

 reflexed. Axis with three lamelloa, the upper one much the 

 larger in the intermediate whorls, middle lamella smallest, 

 lower lamella with distant delicate spines, which are wanting 

 in the two lower whorls (fig. 14). 



