112 HEL1X-LUCERNA. 



bronni, larger and browner on the base. H. valida is similar, but 

 the body-whorl is not so depressed as in sloaneana. The teeth are- 

 not nearly so large in this shell as in H. sinuata, nor is the inner 

 groove behind the peristome so long. 



H. BRONNI Pfeiffer. PI. 38, figs. 78-80. 



Imperforate, globose-depressed or subtrochoidal, solid, opaque, 

 shining, upper surface deep chestnut brown, periphery white, base 

 white or yellowish except for a brown fascia revolving below the 

 periphery ; surface granulate (under a lens), the granulation usually 

 nearly or entirely effaced, especially above ; spire conoidal, obtuse,, 

 elevated or depressed ; apex planulate, whitish ; whorls slightly 

 convex, slowly widening, the last scarcely wider than the penulti- 

 mate ; whorls 5 to 5, the last deeply deflexed anteriorly, rounded 

 (or faintly keeled) at the periphery, deeply scrobiculate behind the 

 peristome ; aperture subhorizontal, transverse ; peristome broadly 

 expanded, thickened, basal margin reflexed, widening toward the 

 insertion, adnate over the umbilicus, bearing within four teeth, reg- 

 ularly decreasing in size from the outer to the inner* one ; evenly 

 spaced, the outer two connected at their bases. Lip white and 

 brown ; its upper termination continued in a heavy callous half- 

 way across the parietal-wall toward the axis. 



Alt. 13-16, diam. 24 mill ; alt. 16, diam. 26 mill. 



Jamaica. 



H. bronni PFR. Monogr. i, p, 305 ; Conchyl. Cab. p. 109, t. 15. f, 

 9, 10 ; 1. 153, f. 4. REEVE, f. 241. 



Closely allied to H. sloaneana, but smaller, more elevated, with 

 shorter aperture, more thickened and broader basal lip. 



H. STRANGULATA, C. B. Adams. PI. 36, figs. 42-46. 



Imperforate, globose, solid, opaque, dull, chocolate-brown, base 

 usually paler ; surface microscopically granulated all over ; spire 

 convex, low, obtuse ; apex planulate ; sutures impressed ; whorls 5, 

 convex, slowly widening, the last subglobose, rounded at the per- 

 iphery, deeply deflexed anteriorly, indented behind the peristome by 

 two curved converging furrows ; aperture subhorizontal, transverse ;. 

 peristome broadly expanded, soiled whitish, basal margin reflexed, 

 adnate over the umbilicus, bearing within four tortuous lamellar 

 teeth, the inner one very close to the insertion. Parietal-wall 

 traversed by a heavy callous continued downward from the upper 

 termination of the peristome. Alt. 15, diam. 24 mill. 



Jamaica* 



