248 CATALOGUE OF PHANEROPNEUMONA. 
Helicina festiva, Sow. in Zool. of Beech. Voy. p. 145, t. 38, f. 23 
Sow. Thes. n. 12, p. 4, t. 1, £.9; Pfr. Pneum. Mon. p. 343. 
Hab. Haiti (Sallé). 
10. HELICINA SILACHA. 
Shell conoidally-depressed, solid, closely sculptured with deep, 
oblique, radiating grooves, whitish, green between the ribs; 
spire convex-conoidal, rather blunt; whorls 43, nearly flat, 
last slightly angulated at the periphery, girdled with a green- 
ish-brown band, which is bordered with a paler one; columella 
receding, white, terminating at its base in a thick knot, form- 
ing backwards a thick circumscript callus, surrounded by an- 
other, which is broader, glassy and diffused till the right margin 
of the peristome ; aperture diagonal, triangularly semiovate ; 
peristome thick, white, broad, with the upper margin straight, 
sinuate, basal margin slightly reflexed. Operculum testaceous, 
pearly. Height 12, greatest breadth 20, least br. 162 mill. 
Helicina silacea, Morelet, Test. Noviss. i. p. 20, n. 48; Pfr. Pnewm. 
Mon. p. 344. 
Hab. Cuba. 
11, HELICINA SUBMARGINATA, B. M. 
Shell depressed-conoidal, solid, faintly striated obliquely, decus- 
sated with impressed spiral lines, whitish or fuscous-orange- 
coloured, slightly shining ; spire short, rather pointed ; whorls 
4, nearly flat, the last one scarcely descending anteriorly, with 
a pale band on the periphery ; aperture oblique, whitish or red- 
dish within; columella shortly arcuate towards the right side 
at its base, which terminates in a small knot; peristome 
straight, little thickened, with the margins joined by a rather 
thin callus spreading backwards ; basal margin furnished with 
a distinct plait, entering behind the columella. Operculum like 
that of H. Sagraiana. Height 12, greatest breadth 17, least br. 
14 mill. 
Helicina submarginata, Gray, in Zool. Journ. i. p. 68, t. 6, f. 11; 
Désh. in Lam. Hist. viii. p. 162, n. 15; Orb. Moll. Cub. i. p. 244, 
t. 19, f. 7, 8; Sow. Thes. un. 10, p. 3, f. 123, 187; Gould, in Bost. 
Journ. iv. 4, p. 492; Pfr. Ic. n. 8, p. 16, t. 1, f.8-10; Pneum. 
Mon. p. 344. 
Helicina rubra, Pfr. in Wiegm. Arch. f. Nat. 1839, i. p. 355. 
Hab. Cuba, near Matanzas, Rettro. 
12. HEeELICINA PULCHERRIMA. 
Shell depressed-globose, thick, sculptured with longitudinal fold- 
like striz, shining, fuscous-reddish or greenish-yellow ; spire 
