which inhabit Jamaica. 173 



convex : whorls four and one-half to five, a little convex, Avith 

 a moderately impressed suture ; last whorl subangular : aper- 

 ture transversely ovate, laterally dilated : lip but little re- 

 flected and thickened except in the columellar part, which is 

 well thickened, reflected, and appressed : umbilicus wanting. 

 In form this shell most resembles a very depressed H. fusco- 

 cincta, but is much more dilated laterally near the aperture. 



G-reatest breadth .94 inch ; least breadth .75 inch ; heighth 

 .6 incli. 



This species is named for its habitat, tlie parish of St. 

 James. 



Helix spreta. Shell orbicular, moderately depressed : 

 very pale horn color, translucent : smooth : spire with the out- 

 lines a little curvilinear :"whorls five, quite convex, shouldered, 

 with a rather deep suture ; last whorl well rounded : aperture 

 sublunate : labrum thin and sharp : umbilicus rather narrow 

 and deep. This species is best described by comparison with 

 H. peraffinis and H. Boothiana. Above, the spire is nearly 

 as much depressed as in the former species : beneath, the last 

 whorl is nearly as convex as in the latter, while the umbilicus 

 is as wide as in the former ; the aperture is not so wide as in 

 H. peraffinis nor so high as in H. Boothiana. 



Greatest breadth .25 inch ; least breadth .22 inch ; height 

 .17 inch. 



Variety errans diflfers from the above, in having the whorls 

 less shouldered and consequently the suture less deep, and in 

 having the region around the umbilicus somewhat thickened 

 internally so as to be opaque. 



Helix epistylium var. minor differs from the common type 

 of the species in being much smaller, with a more rounded 

 outline ; beneath it is considerably more convex ; the surface 

 is less shining. Greatest breadth .52 inch ; least breadth .49 

 inch ; height .45 inch. It inhabits AVcstmoreland. At the 

 opposite extremity of the island, in Portland, H. epistylium is 



