234 UROCOPTIS, S. G. GONGYLOSTOMA. 



Western Cuba: Sitio Nuevo and Punta de Jaula, both near 

 Guane, Pinar del Rio (Wright). 



Cyl. concreta Gundlach mss., PFR., Malak. BL, xi, 1863, 

 p. 8, no. 54; Monogr., vi, p. 363; Novit. Conch., iii, p. 435 

 (but not pi. 97, f. 12-15). ARANGO, Contrib., p. 108. 

 Sows., C. Icon., pi. 12, f. 113 ( ?) . 



The original description is given above. Pfeiffer subse- 

 quently figured as concreta another species from the same 

 localities, and hardly distinguishable in external features, 

 but differing in having two axial spirals. This form has 

 been named distincta (see no. 98). 



U. concreta is sometimes nearly smooth, but varies to weakly 

 striate. The shape is either subcylindric or swollen below, 

 the upper third or more of the length tapering rather rapidly 

 to a narrow truncation. The slender axis is encircled by a 

 thin lamella near the base. 



112. U. CAPILLACEA (Pfeiffer). PI. 55, figs. 5, 8. 



Shell cylindric below, the upper half tapering to the rather 

 small, entire apex ; thin, bluish- white, the upper whorls usu- 

 ally dirty brownish from the contained diy viscera. Surface 

 glossy, very closely and very finely striate. Whorls 13 to 14, 

 convex, the last prolonged free forward and dowmvard in a 

 moderately short neck, which is more coarsely striate, with 

 wider intervals than the rest of the shell. Aperture round, 

 oblique; peristome continuous, evenly thickened and reflexed 

 throughout. Axis encircled low in each whorl by a weak, 

 low lamella, the edge of which is more or less distinctly 

 crenulate. 



Length 10.5 to 12, diam. 2.5 mm. 



Western Cuba: Vinales, type loc. ; also Isabel Maria, dist. 

 of Pinar del Rio (Wright). 



Cyl. capillacea PFR., Malak. BL, xi, 1863, pp. 9, 129; 

 Monogr., vi, p. 372. ARANGO, Contrib., p. 115. 



A very finely striate, bluish-white, subtranslucent shell, 

 with the axial lamella weak. The neck is sometimes shorter 

 than in the example figured. 



