UROCOPTIS OF HAITI. 159 



33. U. GUIGOUANA (Petit). PL 39, figs. 20, 21. 



Shell oblong-fusiform, a little swollen in the middle, rather 

 solid, the spire tapering, apex decollate. Whorls 10 to 13, 

 finely and regularly rib-striate, the upper whitish-rose, the 

 lower somewhat brownish ; last whorl provided with an obtuse 

 keel at the base. Aperture subcircular, the peristome white, 

 expanded, a little reflexed. Length 30, diam. 11 mm. (Petit). 



Haiti : S. Domingo (Dr. Guigou) ; Gonave Island, in the 

 mountains near the coast, on the east side (Dr. J. J. Brown, 

 types of (7. mabuja) ; Jeremie and Miragoane (Rolle, types of 

 C. strohmi. 



Cyl. guigouana PETIT de la SAUSSAYE, Journ. de Conchyl., 

 vii, 1859, p. 285, pi. 10, f. 5. PFR., Monogr., vi, p. 359. 

 CROSSE, J. de C., 1891, p. 136, pi. 1, f. 3. C. gouigouana 

 MART., in Alb., Die Hel., p. 37. Cyl. mabuja WEINLAND. 

 Jahrb. d. m. Ges., vii, 1880, p. 362, pi. 12, f. 16. Cyl. strohmi 

 MALTZAN, Nachr'bl. d. m. Ges., xx, 1888, p. 177. CROSSE, J. 

 de C., 1891, p. 136, pi. 1, f. 4. 



The type is in the collection of the Journal de Conchyli- 

 ologie. The striae are represented much too faintly in my 

 figures 20 and 21, which were copied from the figures of the 

 type specimen. The original description is given above. 



Crosse, who figured an original specimen, has already re- 

 marked that C. strohmi (pi. 39, figs. 22, 23) differs from the 

 type of guigouana only in having the peristome carried for- 

 ward free of the preceding whorl, while in guigouana it is 

 adherent above. In this respect strohmi is like mabuja (pi. 

 39, figs. 24, 25, 26), of which eight specimens of the original 

 lot are before me. Perhaps mabuja can be retained as a 

 variety, characterized by the free peristome; strohmi becom- 

 ing a synonym of it; but in the related U. gruneri this char- 

 acter is merely an individual variation. 



In Gonave Island specimens the last 3 whorls are of about 

 equal diameter, or the antepenult, may be slightly wider; 

 above this the shell tapers rapidly to the small concave trun- 

 cation. The sculpture is a close, even, arcuate, rib-striation, 

 not coarser on the last whorl. The surface is dull or but 

 slightly glossy, dull light red-brown or pinkish-purple, and 



