=I 
HELICINID ZA. rif 
Helicina Menkeana, Philippi, in Z. f. M. 1847, p. 126. 
Helicina fasciata, Deless. Recueil, t. 27, f. 2 (not Lamarck). 
Hab. Brazils. 
97. HELICINA ORESIGENA. 
Shell orbicular, rather depressed, thin, irregularly striated, yel- 
lowish ; spire conical; whorls 4; aperture semilunate ; colu- 
mella rounded; labrum thick. Height 61, breadth 9 mill. (Ord.) 
Helicina oresigena, Orbigny, Synops. p. 28; Voy. Amér. p. 359, 
t.46,f. 10-16; Sow. Thes. n. 64, p. 13, t. 1, f. 28; Pfr. Pneum. 
Mon. p. 382. 
Hab. The province Yungas, Bolivia. 
98. HBLICINA SYLVATICA. 
Shell orbicular, convex, conic, elevated, thick, faintly striated 
beneath (above?) smooth internally, yellowish ; spire conic, 
raised; whorls 5; aperture semilunate ; columella thick, rounded; 
labrum thick, slightly reflected, whitish. Height 6, breadth 7 
mill. (Orb.) 
Helicina sylvatica, Orbigny, Synops. p.28; Voy. Amér. p. 359, 
t. 46, f. 17-20; Sow. Thes. n. 63, p. 12, t. 1, f. 30; Pfr. Pneum. 
Mon. p. 382. 
Hab. St. Cruz and Chiquitos, Bolivia. 
99. HELICINA FASCIATA. B. M. 
Shell ovate, depressed, rather thin, faintly striated obliquely, 
slightly shining, whitish or yellowish, variously painted with 
purplish zones and denticulated bands; spire shortly conoidal, 
with the apex mucronulate ; whorls 45-5, rather flat, enlarging 
rapidly, last broad, depressed, rather flat beneath; columella 
shortly arcuate; aperture very oblique, nearly triangular, 
broader than high ; peristome somewhat thickened, expanded, 
with the basal margin straight, continued into the basal callus, 
which is thick, but diffused towards the upper side. Operculum 
thin, horny. Height 5-6, greatest breadth 7-10, least br. 6-8 
mill. 
Helicina fasciata, Lam. Hist. vi. p. 103, n.3; Ed. Désh. viii. p. 153 ; 
Gray, in Zool. Journ. i. p. 65, t. 6, £.3; Désh. in Encycl. Méth. 
li. p. 268, n. 3; Potiez & Mich. Gal. Douat, i. p. 229, t. 23, 
f. 3,4; Pfr. Ic. n. 62, p. 48, t. 3, f. 26-385; Pneum. Mon. p. 382. 
Helicina picta, Fer. Mus.; Sow. Thes. n. 27, p. 6, t. 2, f. 56, t. 3, 
f, 140, 141. 
Helicina rotellaris, Menke, Synops. p. 80, ed. ii. p. 133. 
Hab. Portorico and Martinique. 
The colouring and size of this species are most variable. 
BB 
