HELIX-LUCERNA. 113 



H. strangulata, AD. Contrib. to Conch, no. 2, p. 31. PFR. Monogr. 

 iii, p. 211 ; Conchyl. Cab, p. 445, t. 153, f. 10, 11. REEVE f. 244. 

 GLOYNE, Journ. de Conchyl. xx, p. 30. 



Separated at once from other species by the two curved converg- 

 ing furrows behind the peristome ; H. bronni and other forms of 

 like outline having three furrows. 



H. VALIDA, C. B. Adams. PL 35, figs. 14-18. 



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

 dark-brown generally lighter beneath, and with a lighter peripheral 

 band; surface densely finely granulate; spire elevated, obtuse, 

 apex planulate, polished, sutures impressed ; whorls 5, gradually 

 increasing, convex, the last globose-depressed, rounded at the pe- 

 riphery, often encircled there by a trace of a carina, deflexed an- 

 teriorly, with two deep pits behind the peristome. the outer one 

 formed by two furrows ; aperture subhorizontal, transverse ; peri- 

 stome broadly expanded, brown, basal margin reflexed, bearing 

 within four teeth, the two outer united at their bases, the inner 



tooth small. Alt. 18, diam. 30-34 mill. 



Jamaica. 



H. validaA'D. Contrib. to Conch. No. 5, p. 77. PER. Monogr. iii, p. 

 210; Conchyl. Cab. p. 443, t. 153, f. 6, 7. REEVE, f. 245. 



Some specimens show a slight trace of a furrow above the 

 periphery, behind the peristome. It is closely allied to H. bronni, 

 but is larger, differently colored and more obviously granulated. 

 The peristome does not become thickened upon its face as it does in 

 H. bronni. A small form before me measures alt. 16, diam. 24 mill. 



H. PICTURATA C. B. Adams. PL 37, figs. 47-53. 



Imperforate or narrowly umbilicate, depressed, solid, chestnut- 

 brown, marked above and below with irregular longitudinal silvery 

 stripes ; surface densely, finely granulate ; spire convex, obtuse ; 

 apex flat, glossy, corneous ; sutures slightly impressed ; whorls 5, 

 slightly convex, slowly widening, the last depressed, rounded or 

 subcarinated at the periphery, deeply descending anteriorly, con- 

 stricted by three deep furrows behind the peristome. Aperture 

 subhorizontal, oblong-wedge-shaped, transverse ; peristome broadly 

 expanded, basal margin reflected, bearing within four strong enter- 

 ing lamellar teeth, the outer two slightly connected at their bases. 



Alt. 12-13, diam. 24-26 mill. 



Jamaica. 



8 HELICID.E. 



