UROCOPTIS, S. G. COCHLODINELLA. 179 



tenth inch. ' l Seems to be constantly smaller, darker colored, 

 more solid and with more convex whorls" than poeyana. 

 Florida. 



Agrees in size with the smaller specimens of U. poeyana 

 found at Miami, but none of the several hundred collected 

 there by Mr. Rhoads and myself has so long a neck as the 

 figure of jejuna shows. 



Var. LACTEOFLUA Pilsbry, n. v. PL 42, fig. 85. 



Shell corneous below, brownish above, copiously marked 

 with opaque white irregular stripes and spots, rarely wanting. 

 Striae wide-spaced, strong below the sutures, elsetvhere weak 

 or obsolete, except on the earlier and last whorls. Basal keel 

 low but distinct. Axis simple. Aperture as in U. poeyana. 



Length 13.7, diam. 3.2 mm. ; whorls 



Length 12, diam. 3.3 mm. ; whorls 



Length 9.3, diam. 2.8 mm. ; whorls 8%. 



Cuba: Paso Viejo, in the municipal district of Pinar del 

 Rio (Chas. Wright). 



Differs from U. p. variegata by its irregular sculpture. 



49. U. PRESASIANA (Pfeiffer). 



' ' Shell subrimate, cylindric turreted, thin, entire or trun- 

 cate, finely and closely striate, pale corneous, pellucid, silky. 

 Spire noticeably tapering above the middle, the vertex small. 

 Whorls 14 in an entire specimen, 8 to 9 in truncate shells, a 

 little convex, the last slightly protracted, subangular at the 

 base. Aperture oblique, circular, the peristome continuous, 

 narrowly expanded throughout. Internal column simple. 

 Length of an entire specimen 13, diam. 2% mm. (P/V.). 



Western Cuba: Hato Sagua, near the foot of Pan de 

 Guajaybon, Pinar del Rio (Gundlach). 



Cyl. presasiana PFR., Malak. BL, xiii, 1866, p. 62 ; Monogr., 

 vi, p. 372. ARANGO, Contr., p. 115. 



Specimens before me which seem to be referable to this 

 species are very similar to U. poeyana, but more closely stri- 

 ate. The neck is extremely short, and sometimes the peri- 

 stome is adherent above. 



