HELIX-DENTELLARIA. 



5, subplanulate, slowly widening, the last acutely carinated at the 

 periphery, constricted and deflexed behind the peristome ; aperture 

 subhorizontal, transverse, silvery white within ; peristome brown, 

 expanded, convex, thickened, terminations remote, joined by a heavy 

 ridge of callus, lower margin bearing two teeth, the inner small, 

 compressed-tubercular, the outer large, compressed, its position 

 marked behind the peristome by a deep pit or scrobiculation. 



Alt. 17, diam. 32 mill. ; alt. 14, diam. 26 mill. 



Martinique; Guadeloupe. 



H. lychnuchus MULL. Hist. Verm, ii, p. 81. (1773.) FER. Hist. t. 

 56A, f. 2-8. PFR. Conchy I. Cab. p. 346, t. 62, f. 13, 14. REEVE, f. 

 248. Dentellaria lychnuchus Mull. W. G. BINNEY, Ann. N. Y. 

 Acad. Sci. iii, p. 112, t. 16, f. u, and t. 9 f. K. (jaw and dentition). 

 Zonites lychnuchus SAINT-SIMON Journ. de Conchy 1. 1853, p. 234. 

 (Anatomy.) 



The largest of the carinate species of Dentellaria. It is most 

 nearly allied to H. josephinse, but is larger, more elevated, plainer in 

 color. It is usually uniform dark brown, but sometimes lighter, 

 with obscure spiral bands. The granulation is decidedly more 

 minute than in H. perplexa. 



H. JOSEPHINE Ferussac. PI. 29, figs. 31-33. 



Imperforate, depressed, acutely carinated, solid, opaque ; scarcely 

 shining, light greenish yellow, banded with chestnut around the 

 umbilicus and in the middle of the base, and with subsutural and 

 supra-peripheral brown bands interrupted by radiating yellow 

 flammules; surface covered with a dense microscopic corrugation, 

 delicately obliquely striate. Spire low, rounded, obtuse ; apex 

 planulate ; sutures linear ; whorls 4 ?, subplanulate, slowly widening, 

 the last carinated at the periphery, deeply deflexed at the aperture ; 

 aperture transverse, subhorizontal ; peristome white, expanded, re- 

 flexed and adnate over the umbilicus, terminations remote, joined 

 by a white parietal callus ; basal margin with two teeth, the inner 

 small, outer large, compressed, its position marked behind the peri- 

 stome by a large and deep pit. 



Alt. 11, diam. 23 mill. ; alt. 8, diam. 17 mill. 



Guadeloupe; Nevis; St. Kitt's; Dominica. 



H. Josephines FER. Hist. t. 56, f. 9, 10. PFR. in Conchyl. Cab. p. 

 351, t. 62, f. 11, 12 ; Monogr. i, p. 310. GUPPY, Ann. Mag. N. H. 

 4th, Ser. i. REEVE, f. 272. Dentellaria Josephines Fer. W. G. 



