224 UROCOPTIS, S. G. GONGYLOSTOMA. 



Malak. BL, xi, p. 9. ARANGO, Contrib., p. 114. Sows., C. 

 Icon., xx, pi. 16, f. 137. Cyl. subita POEY, Memorias, ii, 

 pp. 32, 61, pi. 3, f. 12, 13. PFR., Malak. BL, iii, p. 222; 

 Monogr., iv, p. 692. Cyl. concinna Arango, according to Pfr. 

 Well distinguished by its almost flat whorls, glossy surface, 

 with very fine, almost effaced striation, but becoming sharply 

 costulate on the neck. Arango gives the locality Sitio Per- 

 dido, in Jaruco, where Clerch collected it, and Bejucal; but 

 the specimens he sent as planospira from the latter place are 

 a form of U. elegans. In Malak. BL, xi, Pfeiffer states that 

 Arango collected planospira at the mountain Cuzco, near 

 Cayajabos; but in the Contribution no mention is made of 

 this locality for the species. Fig. 60 is from that of Pfeiffer. 



95. U. FORTIS ('Gundl.' Pfr.). PI. 53, figs. 54, 55, 59. 



Shell cylindric, the upper third or fourth tapering to the 

 wide truncation; pale corneous, somewhat glossy when clean, 

 but normally dull and soiled ; the surface very closely, sliarply 

 striated, the stria thread-like, becoming a trifle more spaced 

 on the neck. Whorls narrow, slightly convex, the last shortly 

 free, rounded. Aperture rounded, oblique, the peristome 

 expanded and a little reflexed. Axis very stout, fusiform, 

 with two strong spiral lamellae, the upper one heavier and 

 somewhat larger in the intermediate whorls, the lower 

 lamella delicately spinose in the upper whorls. 



Length 16.5, diam. 3.4 mm. ; whorls 14!/2. 



Length 14.8, diam. 3.7 mm.; whorls 11%. 



Length 13, diam. 3.2 mm. ; whorls 12. 



Length 16, diam. 3.66 mm.; whorls 13-14V 2 (Pfr., type). 



Western Cuba: Ceiba Mocha, near Matanzas (Grindlach, 

 Arango, Wright). 



Cyl. fortis Gundlach mss., PFR., Malak. BL, xi, 1863, p. 5; 

 Monogr., vi, p. 375. ARANGO, Contrib., p. 117. 



Distinct by its very fine, dense, sharp striation, short 

 whorls, and the stoutness of the strongly bilamellate internal 

 axis. The external sculpture reminds one of the Jamaican 

 U. hydrophana. The rosy tint noticed by Pfeiffer is due to 

 adhering soil. 



