80 HELIX-DENTELLARIA. 



covered with an excessively minute decussated sculpture, the inner 

 whorls granulated ; spire low-conical, apex obtuse ; whorls 4 J, rapid- 

 ly widening, the last strongly carinated, slightly descending an- 

 teriorly ; aperture quite oblique, white within ; peristome expanded, 

 thickened, white, not toothed within, but bearing an obtuse fold 

 near the columellar insertion. Alt. 22-23, diam. 46-51 mill. 



Yunque de Baracoa, Eastern Cuba.. 



H. apollo PFR., P. Z. S. 1860, p. 133, t. 50, f. 9 ; Monogr. v, p. 

 309 ; Novitates Conch, iii, p. 389, t. 90, f. 1-8. ARANGO, Fauna 

 Mai. Cubana, p. 74. H. imperatrix Gundl. (olitri) Journ. de 

 Conchyl. 1860, p. 228. 



H. SOBRINA Ferussac. PI. 8, figs. 72-76. 



Imperforate, depressed-subglobose, solid, heavy, opaque, yellowish,, 

 densely marked with dark chestnut or blackish finely-undulating 

 lines and streaks, which cover nearly the entire surface ; sculpture 

 as in H. apollo ; spire convex, apex obtuse ; apical 2 whorls whit- 

 ish ; whorls 4i, scarcely convex, rapidly widening, the last globose- 

 depressed, bluntly angular in front, becoming rounded, descending 

 anteriorly ; aperture quits oblique ; peristome expanded, heavy, 

 white, thickened, its face convex, without teeth, but with an obtuse 

 fold near the columellar insertion ; expanded and adnate over the 

 umbilicus. Alt. 25, diam. 43 mill. 



Jurisdictions of Santiago de Cuba, Mayari, Baracoa, and Guan- 

 tanamo, Cuba. 



H. sobrina FER., Hist. t. 43, f. 6. PFR., Monogr. i, p. 264. 

 REEVE, f. 1388. IT. crassilabris PFR. P. Z. S. 1846, p. Ill; 

 Monogr. v, p. 287. 



A very large, thick and ponderous fossil form is figured on pi. 8,. 

 figs. 75, 76. Specimens measure, alt. 30-32, diam. 50-54 mill. 



This species differs from H. apollo in being less carinated and 

 darker in color. 



Section IV. DENTELLARIA Schumacher, 1817. 



Dentellaria SCHUM. Essai d'un nouv. Syst. Test., p. 230. BECK,. 

 Index, p. 34. MORCH, Cat. Yoldi, p. 11. ALBERS, Die Heliceen 

 (1850), p. 123. ALBERS-MARTENS, Die Heliceen, p. 151 (1860). 

 H. & A. Ad. Gen. Rec. Moll, ii, p. 200. Lucidula SWAINSON,. 

 Treatise on Malac., p. 329. Luddella SWAINS., 1. c. p. 330. 



