UROCOPTIS, S. G. GONGYLOSTOMA. 241 



119. U. ADNATA (Pfeiffer). PL 55, fig. 98. 



Shell shortly rimate, cylindric-turrete, rather thin, nearly 

 smooth, very lightly striate at the sutures, pale corneous -, 

 spire tapering above, the apex truncate; suture light, sub- 

 crenulate. Whorls remaining 13 to 15, a trifle convex, the 

 last not free, rib-striate in front, carinate at the base. Aper- 

 ture slightly oblique, oblong-rounded, narrowed by a some- 

 what tooth-like columellar fold within; peristome continuous, 

 adnate above, elsewhere subequally expanded. Length 19, 

 diam. 3.66 mm. (Pfr.). 



Western Cuba: Sumidero, a hacienda in district of Pinar 

 del Rio (Gundlach). 



Cyl. adnata PFR., Malak. BL, xi, 1864, p. 129; Monogr., vi, 

 p. 361; Novit. Conch., p. 453, pi. 100, f. 1-3. ARANGO, 

 Contrib., p. 106. C. adumpta Pfr., CLESSIN, Nomencl. Hel. 

 Viv. p. 277, no. 41 (1878). 



Pfeiffer 's original description is given above, and his en- 

 larged figure copied, pi. 55, fig. 98. The shell is very weakly, 

 coarsely striate, with wide-spaced rib-striae on the latter part 

 of the last whorl, and there is often a faint band on the last 

 whorl, as in others of the group. In shape U. adnata closely 

 resembles U. thomsoni and U. decolorata, differing from the 

 former in the weak sculpture and adnate peristome (though 

 occasionally the parietal edge is distinctly raised) ; from 

 U. decolorata in being less smooth and less closely rib-striate 

 behind the outer lip. The axis is slender, encircled by a 

 strongly serrate, thin lamella. Specimens measure: 



Length 21, diam. 3.8 mm. ; whorls 12. 



Length 22.5, diam. 3.7 mm. ; whorls 14. 



Length 18, diam. 3.7 mm. ; whorls 



120. U. CRENULATA ( Gundlach) . PL 55, figs. 3, 4. 



Shell cylindric-conic, rimate, subdiaphanous, glossy, trun- 

 cate; obsoletely and remotely striate; pale fulvous, a little 

 marbled with ashy-white, and having a narrow thread-like 

 reddish basal band. Whorls 17, a little convex, the last 

 sculptured with stronger striae and subcarinate. Suture 

 subcrenulate. Aperture oval, subvertical, slightly contracted 



