228 UROCOPTIS,, S. G. GONGYLOSTOMA. 



reflexed. Axis slender, encircled by a low spiral lamella, 

 which in the upper whorls is distantly denticulate, and a 

 smaller lamella above it, extending downward only into the 

 third whorl from the base. The two lamellae are of about 

 equal size in the whorls of the upper half of the shell. 



Length 10.3, diam. 2.3 mm. ; whorls 10 to 11. 



Length 12, diam. 2.75 mm.; whorls 11 (Pfr., type). 



Western Cuba: La Palma, Pinar del Eio (Wright). 



Cyl. cristallina Wright mss., PFR., Malak. Bl., xii, 1865, 

 p. 120; Monogr., vi, p. 363; Novit. Conch., p. 437, pi. 97, 

 f. 22-25. ARANGO, Contrib., p. 108. CROSSE, J. de C., 1890, 

 p. 219. 



Not unlike U. distincta, but the axis is weaker, the lower 

 lamella small, and the upper lamella is obsolete in the lower 

 whorls, nowhere conspicuous, so that Pfeiffer describes the 

 column as "subsimplex, vix torta;" and indeed it escaped 

 notice by Mr. Vanatta and myself in our paper of 1898 

 (p. 277). Figures 81, 82 are from specimens received from 

 Wright, fig. 80 from Pfeiffer. 



101. U. FRATERNA n. sp. PL 55, figs. 1, 6. 



Like U. capillacea in shape and color, but more coarsely 

 striate, and the axis bears two spiral lamella. Whorls 14^/2 

 to 15, the spire complete. 



Length 12, diam. 2.5 mm. 



Length 11, diam. 2.3 mm. 



Western Cuba: Isabel Maria, in dist. of Pinar del Rio, 

 prov. P. del R. (Chas. Wright, no. 382). 



A very closely related form, probably identical, occurs at 

 los Cayos de San Filipe, in the district of Vinales, prov. 

 Pinar del Rio, where Wright collected specimens before me. 



102. U. FUMOSA ('Gundl.' Pfr.). 



Shell subrimate, cylindric-turrete, rather solid, very 

 densely, obliquely hair-striate, silky, corneous-brown; spire 

 lengthened, a little swollen in the middle, the apex truncate. 

 Whorls remaining 11, a little convex, the last free, subsulcate 

 on the left side. Aperture a little oblique, circular; peri- 



