UROCOPTIS, S. G. GONGYLOSTOMA. 215 



c. Truncate; delicately, closely striate, glossy; 

 12x3 mm., whorls 10-11. 



U. maclioi, no. 107. 



d. Truncate; weakly striate or nearly smooth, 

 whitish hyaline; 12x2.6 mm., whorls 11. 



U. concreta, no. 111. 



e. Slightly truncate, cylindric-subulate, smooth, 

 pellucid whitish ; 15 x 3 mm., whorls 19. 



U. volubilis, no. 113. 



(Group of U. crispula.) 

 84. U. ARTEMISIA ('Gundl.' Pfr.). PI. 54, figs. 67, 68, 69, 70. 



Shell rimate, fusiform-turreted, rather solid, obliquely 

 somewhat closely rib-striate, hardly shining, flesh-colored; 

 spire a little swollen in the middle, noticeably tapering 

 above, truncate. Whorls remaining 11, a little convex, the 

 last cylindrical, shortly free in front and somewhat descend- 

 ing, slightly dilated and more closely costulate. Aperture 

 nearly diagonal, subcircular; peristome equally, narrowly 

 expanded. Internal column encircled by two strong, sub- 

 equal laminae. Length 12-12i/^, diam 3^ mm.; apert. diam. 

 1/3 mm. (Pfr.). 



Western Cuba: Town of Artemisa (Gundlach) ; Marianao 

 (Arango, Rhoads), both westward from Havana. 



Cyl. artemisicu Gundlach mss., PFR., Malak. Bl., xi, 1863, 

 p. 6; Monogr., vi, p. 380. ARANGO, Contrib., p. 121. C. 

 artemesicc SOWERBY, Conch. Icon., xx, pi. 12, f. 106. 



The shape, somewhat swollen in the middle, is character- 

 istic. The color of Artemisa specimens is pale brownish 

 flesh color, the riblets lighter, but owing to the adhesion 

 of a coat of soil, museum specimens commonly are brick- 

 red, like Sowerby's figure, which I have copied (pi. 54, 

 fig. 69) . These shells retain 9^ to 13y 2 whorls, but in the 

 latter case several upper ones have been abandoned, 10 to 11 

 being the ordinary number. The riblets are well raised, 

 thread-like and oblique, only slightly arcuate, and separated 

 by spaces of about three times their width. There are about 



