HELICINIDE. 257 
Helicina unicolor, Féruss. Mus.; Pot. & Mich. ibid. p. 231, t. 23, 
t 15, 16. 
Helicina lutea, Sow. Thes. n. 24, p. 6, t. 2, f. 59. 
8B. Somewhat larger, more solid, reddish-brown (Pfr. Jc. t. 7, 
£:8,,9). 
Helicina lutea, var., Sow. Thes. t. 3, f. 142. 
Hab. The Islands of Guadeloupe and Martinique; and from Cuba ? 
38. HELICINA SUBFUSCA. B. M. 
Shell rather depressed, thin, distinctly striated obliquely, slightly 
pellucid, somewhat shining, greenish-horn-coloured; spire short, 
with the apex rather pointed; whorls 5, scarcely convex, last 
somewhat depressed, flattened beneath; aperture oblique, semi- 
ovate; columella short, terminating in a small pointed knot ; 
peristome simple, sharp, right margin not sinuate; basal callus 
extremely thin. Operculum semiovate, thin, reddish. Height 5, 
greatest breadth 84, least br. 74 mill. 
Helicina subfusca, Menke, Synops. p. 79, ed. alt. p. 133; Pfr. Le. 
n. 23, p. 24, t. 4, f. 34-36; Pneum. Mon. p. 355. 
Helicina rotellina, Pot. d Mich. Gal. Douai. i. p. 230, t. 23, 
©. PT,12. 
Helicina Hornbeckil, Philippi, in Z. f. M. 1847, p. 125. 
8. Shell darker, chestnut-coloured (Pfr. Jc. t. 8, f. 37, 38). B. M. 
Helicina castanea, Gudlding, in Sow. Thes. nu. 67, p. 18, t. 1, 
f, 31, 32. 
Hab. West Indies, St. Thomas, Portorico, etc. 
39. HELICINA NITIDA. 
Shell rather depressed, moderately convex on both sides, thin, 
smooth, shining, pellucid, reddish-flesh-coloured ; spire somewhat 
raised, with the apex slightly mucronate; whorls 5, rather 
flattened, enlarging rapidly, last not descending ; aperture some- 
what oblique, nearly triangular; columella very short, perpen- 
dicular, terminating in a small pointed tooth; peristome simple, 
sharp, with the upper margin arcuated forward; basal callus 
extremely thin. Operculum membranaceous, flesh-coloured. 
Height 54, greatest breadth 8, least br. 7 mill. 
Helicina nitida, Pfr. in Wiegm. Arch. f. Naturg. 1839, i. p. 355 ; 
Ic. n. 24, p. 25, t. 4, f. 19221; Sow. Thes. n. 68, p. 13, t. 3, £. 116; 
Pfr. Pneum. Mon. p. 356. 
Helicina glabra, Gould, in Proc. Bost. Soc. i. p. 138. 
Helicina orbiculata, Sow. Thes. n. 65, p. 13, t. 1, £. 33, 34. 
Hab. Cuba ; very common near Matanzas ? 
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