56 CATALOGUE OF PHANEROPNEUMONA. 
Cyclostoma turbo, Sow. Thes. n. 75, p. 116, t. 25, f. 102, 103; Pfr. Ic. 
n. 148, p. 140, t. 19, f. 4,5; Jay, Catal. 1850, p. 260, n. 6014. 
Cyclostoma maculosa, Jay, Catal. 139, p. 122, t. 7, f. 9, 10. 
Cyclophorus turbo, Pfr. in Z. f. M. 1847, p. 108, n. 19; Consp. 
n. 111; Gray, Cat. Cyc. p. 20, n. 21; Pfr. Pneum. Mon. p. 80. 
Hab. India, Tranquebar, and Coromandel (Chemnitz), Sumatra 
(Sowerby, Gray), Nicobar (Mérch). 
46. CycLOPHORUS ICTERICUS. 
Shell globular-conic, solid, fulvid-yellowish, sculptured with slight 
and crowded spiral ridges; spire conic, with the apex subtrun- 
cate; whorls 5, moderately convex, the last as high as the spire, 
furrowed more deeply beneath; aperture rather oblique, ovate- 
round, of the same colour inside; peristome rather thickened, 
expanded, with the margins joined by a callus, which has a 
semilunar slope; columellar margin expanded above into a 
vaulted, reflected lamina, covering the umbilicus. Opere.? 
Height 18, greatest breadth 22, least br. 162 mill. 
Cyclostoma ictericum, Sow. Thes. n. 113, p. 131, t. 31, f. 268, 269 ; 
Pfr. Ic. n. 150, p. 142, t. 19, f. 8, 9. 
Cyclophorus? ictericus, Pfr. in Z. f. M. 1847, p. 108, n. 20; Consp. 
n. 112; Gray, Cat. Cyel. p. 20, n. 22; Pfr. Pneum. Mon. p. 81. 
Locality unknown. 
§ 6. Shell subturbinate; peristome straight. 
47. CYCLOPHORUS LUTESCENS. 
Shell depressed-conoidal, solid, sculptured with oblique thread-like 
striz, silk-shining, brownish-yellowish ; spire shortly conoidal, 
with the apex rather pointed; suture deep, simple; whorls 43, 
convex, enlarging rapidly, last not descending ; umbilicus middle- 
sized, deep; aperture scarcely oblique, roundish-ovate; peri- 
stome simple, straight, continuous, shortly affixed, slightly an- 
gulated above. Operculum membranaceous, pale horn-coloured. 
Height 12, greatest breadth 20, least br. 154 mill. 
Cyclostoma lutescens, Pfr. in Proc. Z. S. 1851; Ic. n. 345, t. 43, 
f, 12-14, 
Cyclophorus lutescens, Pfr. Consp. n. 76, p. 51; Pnewm. Mon. p. 82. 
Hab. Brazils. 
This shell resembles very much Cyclotus translucidus. 
48. CycLopHorus WAHLBERGI. B. M. 
Shell depressed-conoidal, thin, coarse, with hair-like striz, not 
shining, greenish-horn-coloured; spire shortly conoidal, rather 
blunt ; suture deep, simple; whorls 4, convex, increasing rapidly, 
