190 



UROCOPTIS, S. G. GONGYLOSTOMA. 



Cyl. strangulata POEY, Memorias, ii, p. 31, -pi. 1, f. 20-22 

 (1857). BLAND, Ann. Lye. Nat. Hist, of N. Y., vi, 1855, p. 

 151, pi. 5, f. 18 (axis). GUNDLACH, Malak. Bl., iv, 1857, p. 

 46 (color of soft parts). PFR., Conchyl. Cab., p. 19, pi. 8, 

 f. 16, 17; Monogr., iv, p. 698. ARANGO, Contrib., p. 110. 

 Urocoptis (Esocliara) strangulata Poey, PILS. & VAN., Proc. 

 A. N. S. Phila. 1898, p. 276, pi. 18, f. 15 (axis). 



The dilatation of the lower axial lamella is longer and 

 wider than in U. fabreana, which further differs in propor- 

 tions and color, and in having the upper axial lamella obsolete 

 or nearly so. Figs. 29 and 30 represent front and back views 

 of the same shell. 



59. U. FABREANA ('Poey' Pfr.). PL 52, figs. 32, 33, 34. 



Shell long, cylindrical, the upper fourth or third tapering 

 to a moderately wide truncation ; somewhat solid, varying 

 from wax-colored or whitish corneous to pale brown. Sur- 

 face lustreless, sculptured with narrow oblique riblets sepa- 

 rated by much wider spaces. Whorls nearly flat, the last 

 rounded below, with a low cord-like basal keel, very shortly 

 free in front. Aperture subcircular, the peristome thin, 

 rather broadly expanding, hardly reflexed. Axis having, 

 above the middle, a small sub-basal finely denticulate lamella, 

 a scarcely noticeable low cord, or rather a slight sinuosity of 

 the pillar, above it; in the antepenult whorl the lamella ex- 

 pands into a somewhat upward-flaring, broad plate. 



Length 26.5, diam. 5.2 mm. ; whorls 12. 



Length 20.7, diam. 5.2 mm. ; whorls 9%. 



Length 22, diam. 5.66 mm.; whorls 12-13 (Pfr.). 



Western Cuba: Seborucal, near San Antonio de los Banos, 

 in the interior of Habana province (Fab re). 



Cyl. fabreana Poey mss., PFR., Malak. Bl., vi, 1859, p. 96, 

 footnote; Novit. Conch., p. 245, pi. 63, f. 1-3; Monogr., vi, 

 p. 366. ARANGO, Contrib., p. 110. SOWERBY, C. Icon., xx, 

 pi. 8, f. 70. CROSSE, J. de C., 1890, p. 220. 



Related to U. strangulata, but of a more slenderly cylin- 

 drical shape, somewhat more finely ribbed, and differing 

 internally in having the upper lamella obsolete, and the 



