HELICINIDA. 295 
Helicina variabilis, Wagner, in Spix. Test. Bras. p. 25; Désh. in 
Lam. Hist. viii. p. 165, n. 20; Moricand, in Mem. Geneve, vil. 
p. 448; Reeve, Conch. Syst. t. 186, f. 1; Pfr. Ic. n. 86, p. 63; 
t. 1, f. 27-380; Pneum. Mon. p. 402. 
Helicina zonata, Sow. Thes. n. 23, p. 5, t. 2, f. 62-64. 
Helicina zephyrina, Potiez & Mich. Gal. Douai, 1. p. 232, t. 23, 
fo LF, kSt 
Helicina rosea, Wuhif. Anton Verz. p. 53, n. 1933. 
a. Banded ; Helicina fasciata, Spix. Test. ras. t. 16, f. 3, 4. 
8. Uniformly yellow; Helicina flava, Spix. t. 16, f. 5. 
Hab. The province of Para, Brazils. 
150. HELICINA BIANGULATA. 
Shell rather turbinate-depressed, rather solid, sculptured with 
impressed spiral striz, slightly shining, fulvous-reddish; spire 
slightly convex, with the apex acuminated; whorls 5, nearly 
flat, last slightly angulated on the periphery and marked with 
a second angle on the anterior half, moderately convex beneath 
and more closely striated spirally ; aperture oblique, semiovate ; 
columella short, arcuated outward, terminating in an indis- 
tinct tooth, dilated backwards into a white circumscript callus ; 
peristome rather broad, expanded, white. Height 6, greatest 
breadth 11, least br. 9 mill. 
Helicina biangulata, Pfr. in Z. f. M. 1850, p. 192; Ze. n. 100, 
t. 10, f. 34, 35; Pneum. Mon. p. 403. 
Locality unknown. 
151. Henictina Tet. 
Shell conic, rather solid, smooth, opaque, yellow; spire regularly 
conic; whorls 5, the upper ones flattened, the last convex, 
banded with white, rather flat beneath, furnished with two 
keels, the larger one being placed below the middle, the other 
a little below the first; aperture very oblique, semiovate; colu- 
mella short, terminating in a slight knot, bordered above with 
an impressed, transversal line; peristome somewhat thickened, 
white, slightly reflexed, with the upper margin sinuate. Height 
7, greatest breadth 9, least br. 8 mill. 
Helicina Tilei, Pfr. in Z. f. UM. 1847, p. 150; Zc. n. 88, p. 65, 
t. 2,f.4-6; Pneum. Mon. p. 403. 
Hab. Brazils (Dr. Tile). 
152. HeLicINA TROCHLEA. 
Shell minute, trochiform, ash-gray above, and girdled with 3-4 
sharp spiral ribs (the interstices being concave, somewhat 
rough), convex beneath, polished, lemon-yellow; whorls 4, last 
