158 UROCOPTIS OF HAITI. 



the lip being fragile; whitish above, the last whorl bluish, 

 several preceding whorls often livid reddish. Surface glossy, 

 closely striate, the striae smooth, subvertical and somewhat 

 wider than the intervals, much coarser and arcuate on the last 

 whorl. Whorls 7, but slightly convex, the last having a low, 

 cord-like keel in the middle of the base ; shortly free or not so 

 in front. Aperture transversely oval, dark brown inside; 

 peristome broadly expanded 'and reflexed, white, continuous 

 and free, or adnate above to the preceding whorl. Internal 

 column slightly twisted spirally, perceptibly dilated in the 

 last whorl. 



Length 28, diam. 11, diam. aperture 8-9 mm. (Pfr., type). 



Length 28, diam. 11 mm. ; whorls 6%. Gonave I. 



Length 25.5, diam. 10 mm. ; whorls 7 1 /2- Gonave I. 



Length 30, diam. 11 mm. ; whorls 7%. St. Mark. 



Length 27, diam. 11 mm. ; whorls 7. St. Mark. 



Length 28, diam. 10 mm. ; whorls 7. St. Mark. 



Haiti: Port au Prince (Dkr.) ; St. Mark (Henderson & 

 Simpson) ; Gonave Island (J. J. Brown, Weinland). 



Cyl. gruneri DUNKER, in Philippi, Abbild., i, p. 185, pi. 1, 

 f. 20 (December, 1844). PFR., Monogr., ii, p. 370; Conchyl. 

 Cab., p. 5, pi. 1, f. 11, 12. WEINLAND, Jahrb. d. D. Malak. 

 Ges., vii, 1880, p. 362. CROSSE, Journ. de Conch., 1891, p. 135. 



The livid blue color and strong striation of the last whorl 

 are characteristic. Dunker's type (pi. 39, figs. 18, 19) had 

 the aperture nearly circular, but in the specimens I have seen 

 it is wider than high, the upper margin being more or less 

 straightened. In the shells seen from Gonave Island the 

 peristome is free throughout. In four shells in a series of 

 ten from St. Mark, J. B. Henderson coll., it is adnate for a 

 short distance above. 



U. gruneri is more swollen than guigouana (which is rather 

 cylindric) ; the last whorl tapers more, and is livid or bluish 

 between white striae, while guigouana is dull reddish through- 

 out, or paler at the last whorl. U. gruneri is a glossy shell, 

 with the striation becoming coarser on the last whorl, while 

 guigouana is lustreless, with little or no change in the stri- 

 ation. 



