UROCOPTIS OF HAITI. 161 



pi. 40, fig. 38, and pi. 39, figs. 29, 30. A shorter form, more 

 bulging above, and with somewhat stronger sculpture (pi. 40, 

 figs. 36, 37), has been figured by Pfeiffer and Sowerby, and is 

 represented in the collection of the Academy. Its locality is 

 unknown. In this form the peristome is sometimes adnate to 

 the preceding whorl above. Specimens measure : 



Length 19.5, diam. 7.6 mm. ; whorls 7%. 



Length 19, diam. 8 mm. ; whorls 6^. 



U. arcuata is much smaller than U. guigouana, with more 

 arcuate and irregular riblets. 



35. U. TUMIDULA (Weinl. & Mart). PL 41, figs. 71, 72. 



Shell closed-rimate, ovate-oblong, terminating above in a 

 short, concave cone, generally truncate; diaphanous, reddish- 

 brown, glossy, reticulated with close arcuate striae and shallow 

 spiral lirae; suture simple, slightly impressed; whorls of an 

 entire shell about 15, of a truncate shell 8, rather flat, the last 

 with a thread-like keel roughened by the striae passing over it ; 

 shortly produced. Aperture subcircular, transversely di- 

 lated, the peristome expanded throughout, flexuous, white, 

 continuous. Length of an entire shell about 19, of a trun- 

 cate one 15 ; diam. above the middle 5 mm. ; aperture with 

 perist. 4 mm. (v. Mart.). 



Haiti: Neighborhood of Jeremie (Weinland). 



Cyl. tumidula W. & M., MARTENS, Malak. BL, vi, 1859, p. 

 54. PFR., Novit. Conch., p. 261, pi. 65, f . 16, 17 ; Monogr., vi, 

 p. 370. C. fumidula Weinl., ALBERS, Die Hel., 1860, p. 37. 



Somewhat doubtfully referred to this subgenus. It is 

 known to me by the above description only. 



36. U. INNATA (Weinland). PL 41, figs. 65, 66. 



Shell closed-rimate, ovate-oblong, solid, brownish flesh- 

 colored; closely thread-costate, the riblets wavy; spire trun- 

 cate, the apex a little acute, suture simple. Whorls of a trun- 

 cate shell 8 to 9, a little convex, the last whorl adnate in front, 

 very little free, compressed, with a high crest, the crest and 

 base within it whitish. Aperture oblique, nearly circular; 

 peristome continuous, white, narrowly expanded, little thick- 



