256 UROCOPTIS, S. G. GONGYLOSTOMA. 



II. Length about 7 times the diameter, only 1 distinct axial 

 lamella. 



1. Pillar-shaped, truncate, purplish-brown with ob- 

 lique, arcuate, wide-spaced whitish riblets; neck 

 rather long; length 16 to 19, diam. 2.1 to 2.7 mm,; 

 whorls 12 to 13. U. plumbea, no. 142. 



2. Cylindric-subulate, the spire attenuate above, shortly 

 truncate or entire; corneous-brown, the rather close, 

 arcuate riblets paler; neck shorter than in plumbea; 

 length 16 to 18, diam. 2.3 mm. ; whorls 16 or 17. 



U. macra, no. 143. 



137. U. VIGNALENSIS ('Wright' Pfr.). PL 46, figs. 65, 66, 



67, 68. 



Shell cylindric. the upper third rather rapidly tapering to 

 a rather narrow truncation, solid, opaque, ashen flesh colored. 

 Surface lustreless, closely sculptured with narrow riblets 

 separated by much wider intervals, and generally having a 

 series of whitish granules along the suture. Whorls some- 

 what convex, the last shortly free, the baso-peripheral surface 

 flattened but showing a subobsolete cord in place of the usual 

 keel. Aperture subcircular, ochre-brown inside, the peri- 

 stome white, broadly expanded and reflexed; columella with 

 a distinct fold within. Axis bearing three lamellae, the lower 

 one largest, crenate, extending to the last whorl, the others 

 disappearing in the penult, whorl. In the last whorl the 

 axis is slender and more or less sigmoid. 



Length 24, diam. 5.8 mm.; whorls lO 1 /^. 



Length 15.5, diam. 4.8 mm. ; whorls 8. 



Length 17.5-22, diam. 6 mm. ; whorls 9-10 (Pfr.). 



Western Cuba- Vinales (Wright); Banos de S. Vicente 

 (Arango). 



Cyl. vignalensis Wright mss., PFR., Malak. Bl., xi, 1863, 

 p. 3 ; Novit. Conch., p. 246, pi. 63, f . 7-9 ; Monogr., vi, p. 367. 

 CROSSE & FISCHER, Journ. de Conch., 1870, pp. 12, 25, 

 pi. 4, f. 4, 5 (teeth). ARANGO, Contrib., p. 110. Sows., 

 C. Icon., xx, pi. 9, f. 83. 



