124 UROCOPTIS OF JAMAICA. 



U. brevis has been reported from Falmouth (Trelawny) by 

 Henderson as Cyl. obesa C. B. A. (Nautilus, viii, p. 19, no. 

 88). The specimens (pi. 35, fig. 59) agree with U. ~brevis in 

 the shape, narrow truncation, trumpet-like aperture, fine 

 striation and the weakly indicated basal keel. The color is 

 dark brown, paler above, and white behind the thin-edged 

 lip. I can find no character to separate them from U. ~brevis; 

 and if there is no mistake as to the locality, the anomalous 

 distribution may possibly be explicable as a case of coloniza- 

 tion by the accidental transportation of living individuals 

 with plants or goods. The locality is as far as possible re- 

 moved from the known area of U. brevis. 



Var. obesa (C. B. Adams). PI. 33, fig. 95; pi. 32, fig. 78 



(x20). 



11 Differs from C. brevis invariably in having the raised 

 lines comparatively very distant. It is limited to a small 

 district, on both sides of which C. brevis is widely distrib- 

 uted." "Length .57 inch, width .235 inch" (C. B. Ad.}. 



Figures 95 and 78 are from a specimen from the author. 

 This so-called variety occurs in several lots before me mingled 

 with a very closely striate form, the var. densestriata of 

 Adams (pi. 32, fig. 79, x20). The form obesa has coarser, 

 the form densestriata finer sculpture than typical U. brevis; 

 but I do not attach much weight to these differences. 



Pupa obesa (with var. densestriata) C. B. A., Proc. Bost. 

 Soc. N. H., 1845, p. 15. C. obesa and C. densestriata C. B. A., 

 Contrib. to Conch, no. 2, p. 22. 



Var. COLUMNA (C. B. Adams). PI. 33, figs. 5-9; pi. 32, fig. 



77 (x20). 



"Perhaps a variety of C. brevis Pfr., but the spire has rec- 

 tilinear and almost exactly parallel outlines in its lower two- 

 thirds or three-fourths; the shell is longer; the whorls are 

 wholly flattened ; the lip is more widely spread ; and the striae 

 are as small as in the more finely striated varieties of C. brevis. 

 Length .72 inch, breadth .22 inch [18, 5.5 mm.] ; of another, 

 length .575, breadth .18 inch" [14.4, 4.5 mm.] ( C. B. Ad.). 



