120 UROCOPTIS OF JAMAICA. 



sively. In the two species figured, one has the lip appressed, 

 as in sanguinea; in the other it is detached and expanded to- 

 wards the right side of the aperture and bears a notch or 

 sinus. In one the sculpture is decidedly like that of san- 

 guinea, in the other it is like that of cylindrus, but stronger. 

 In specimens with the aperture but slightly produced and the 

 peristome uninterrupted by attenuation and adhesion to the 

 body whorl, or produced and not bearing a sinus, the resem- 

 blance to lata is very great." (Vend.} 



Known to me by the original description and figures only. 

 The internal column is unfortunately unknown. When ex- 

 amined it will doubtless throw light upon the obscure rela- 

 tionships of the form. It occurs in an area (map no. 2, area 

 17) where no other large Urocoptis has been noticed. 



4. U. MEGACHEILA (Chitty). PL 31, figs. 57, 58. 



Shell solid and strong, shortly rimate, oblong-cylindric, 

 rapidly tapering above, dark purple-brown or plum color, 

 with a darker band below the suture; finely striated. 7^- 

 Sy 2 whorls remaining, the last with a low basal carina. Aper- 

 ture brown within, the peristome fleshy-brown, very broadly 

 expanded and flatly reflected, discontinuous above, the ends 

 being connected by a wide bluish or lilac-white parietal 

 callus. Internal column stout, distinctly sinuous and 

 grooved at the root within the penultimate and next earlier 

 whorls, becoming slender and straight above. 



Length 28, diam. 10 mm. ; width of apert. with lip 9.7 mm. 



Length 24.5, diam. 8.7 mm.; width of apert. with lip 

 8.7 mm. 



Jamaica: Moreland, in Westmoreland (Jarvis), and En- 

 deavor, near the southern border of Hanover (Chitty). Map 

 2, area no. 13. 



Cylindrella megacheila CHITTY, Ann. of the Lye. of Nat. 

 Hist, of New York, vi, p. 155, pi. 5, f. 1, 2 (1855). PPB., 

 Monogr., iv, p. 692. SOWB., C. Icon., xx, pi. 6, f. 54. Uro- 

 coptis megacheila Ch., P. & V., Proc. A. N. S. Phila., 1898, 

 p. 274. 



A very distinct species, much stouter in figure than the 



