HELICINIDE. 265 
61. HEeLicINnA SORDIDA. B. M. 
Shell globose-conoidal; whorls rounded, striated longitudinally. 
Operculum chestnut-coloured. Length 14, breadth 43, inch. 
(Aing.) 
Helicina sordida, Aing, in Zool. Journ. v. p. 339; Pfr. Pnewm. 
Mon. p. 366. 
Hab. Rio Janeiro. 
62. HEeLICcINA ARENICOLA. 
Shell conoidally-depressed, spirally striated, whitish-yellow, va- 
ried with several series of pellucid, horn-coloured dots; spire 
convexly conoidal, rather pointed; suture impressed, bordered 
with white ; whorls 55, almost flat, last rounded; aperture some- 
what oblique, semiovate ; columella very shortly curved, marked 
above with an impressed punctiform groove, dilated backwards 
into a rather thin callus; peristome simple, very narrowly 
reflexed. Height 5, greatest breadth 73, least br. 6% mill. 
Helicina arenicola, Morelet, Testac. Noviss. i. p. 21, n. 50; Pfr. Le. 
n. 99, t. 10, f. 24-27; Pneum. Mon. p. 366. 
Hab. Sandy Spots near Sisal, Yucatan. 
63. HELICINA OLEOSA. 
Shell depressed-turbinate, rather thin, faintly striated, diapha- 
nous, oily-glittering, grayish-fulvous; spire conoidal, indistinctly 
pointed ; whorls 5, convex, last large, somewhat convex beneath, 
impressed near the columella, which is short, rectilinear, 
slightly receding, thread-shaped, dilated into a very thin, 
slightly-granulated callus; aperture somewhat oblique, semiovate, 
rather triangular; peristome thin, narrowly reflexed, the basal 
margin forming an angle with the columella. Operculum 
rather solid, pearly. Height 5, greatest breadth 71, least br. 
scarcely 6 mill. 
Helicina oleosa, Pfr. in Proc. Z. S. 1852; Pnewm Mon. p. 366. 
Hab. Haiti (Sallé). 
64. HenicINA PARVA. B. M. 
Shell turbinate-depressed, rather solid, smooth, shining, lemon- 
coloured or reddish; spire shortly conoidal, with the apex 
rather pointed; whorls 4, scarcely convex, last rounded; aper- 
ture somewhat oblique, semiovate; columella very short, dilated 
backwards into a broad callus, its base forming an angle with 
the peristome, which is thin expanded. Height 33, greatest 
breadth 52, least br. 5 mill. 
AA 
