UROCOPTIS, S. G. GONGYLOSTOMA. 275 



Western Cuba: Camoa, Havana province (Gundlach). 



Cyl. camoensis PFR., Malak. BL, ii, 1855, p. 100, pi. 5, f. 

 8, 9 ; Conchyl. Cab., p. 52, pi. 5, f . 36-38 ; Monogr., iv, p. 709. 

 GUNDLACH, Malak. BL, iv, 1857, p. 47 (coloration of soft 

 parts). SOWERBY, C. Icon., xx, pi. 16, f. 139. ARANGO, 

 Contrib'., p. 127. Cyl. modesta POEY, Memorias, ii, p. 93 

 (as var. of C. camoensis). 



A small, delicately ribbed shell, the upper half much at- 

 tenuated. The sculpture varies a good deal, the riblets some- 

 times being irregular and partially obsolete. 



Dentition 4.2.1.2.4 or 5.2.1.2.5, the teeth as in U. plicata. 



159 a. Var. modesta Poey. PI. 62, figs. 34, 35. 



Riblets obsolete or nearly so, the surface comparatively 

 smooth. The figure is from a shell which has lost the early 

 whorls, hence is more shortly attenuate than entire speci- 

 mens. Pan de Matanzas. A Matanzas specimen from Poey, 

 with others before me, supports the view that modesta is a 

 mere variety of camoensis. 



160. U. MARMORATA ( Shuttle worth) . PL 62, figs. 29, 30, 31. 



Shell small, slender, fusiform, opaque fleshy-white varie- 

 gated with wedge-shaped corneous-brown stripes. Surface 

 glossy, smooth. Spire attenuate, entire or narrowly trun- 

 cate. Whorls convex, the last half of the last one free and 

 descending, rounded below. Aperture oblique, circular, the 

 white peristome reflexed. Axis slightly sinuous. 



Length 9.5, diam. 1.7 mm. ; whorls 13y 2 . 



Length 9.5, diam. nearly 2 mm.; whorls 14 (Shuttlw.). 



Western Cuba: Valley of the Yumuri, Matanzas (Rugel). 



Cyl. marmorata SHUTTL., Bern Mittheil., 1852, p. 277, and 

 separate copy, Diagnosen neuer Mollusken no. 3, p. 37. 

 PFR., Malak. BL, 1854, p. 211 ; Monogr., iii, p. 576.- -ARANGO, 

 Contrib., p. 123. C. marmoratc PFR., Conchyl. Cab., p. 55, 

 pi. 6, f. 10-12. 



A very distinct little shell, shorter than the related mottled 

 species, though the neck is sometimes a little longer than in 

 the shells figured. The teeth are as in camoensis, but there 

 are one or two more laterals, formula 5 or 6.2.1. 



