44 CATALOGUE OF PHANEROPNEUMONA. 
convex, the last one more convex, dilated, slightly keeled at its 
periphery, painted beneath with narrow chestnut-coloured 
bands ; umbilicus narrow, open; aperture nearly perpendicular, 
rather circular; peristome rather simple, continuous, shortly 
affixed, pale orange-coloured, flatly expanded all round into 
the plane of the aperture, with the edge slightly reflected. 
Operc.? Height 19, greatest breadth 30, least br. 22 mill. 
Cyclostoma expansum, Pfr. in Proc. Z. S. 1851; Je. n. 290, t. 39, 
f, 20, 21. 
Cyclophorus expansus, Pfr. Consp. n. 84, p. 52; Pnewm. Mon. 
p. 65. 
Hab, Tavoy, Burmah. 
19. CychopHorus CANTOR. 
Shell subglobose-conoidal, with very numerous, slight, spiral, striz, 
fulvid, with a grayish-white periostraca, which is marbled, 
spotted, and lineated with reddish-brown and girdled usually 
with one peripherical blackish band ; spire conoidal, pointed ; 
whorls 5, moderately convex, the upper ones obliquely striate, 
the last whorl obsoletely angulate; umbilicus rather narrow, 
open; aperture nearly perpendicular, large, circular, with the 
margins united by a thin deposit ; peristome expanded, rather 
flattened and reflected. Operce. typical. Height 14} -19, 
greatest breadth 24-30, least br. 19-23 mill. (B.) 
Cyclostoma Cantori, Benson, in Ann. and Mag. 2nd. ser. viii. 
1851, p. 186; Pfr. Jc. n. 414, t. 50, f. 4-6. 
Cyclophorus Cantori, Pfr. Consp. n. 85 ; Pnewm. Mon. p. 65. 
Hab. The Island of Penang (Cantor). 
20. CrvcnopHorus MENKEANUS. 
Shell turbinate, solid, marbled with chestnut and white, with 
crowded spiral lines above, which are slightly decussated by 
the stria of growth; spire short, conoidal, blunt; whorls 4, 
convex, the last one angulated at its periphery, with a peri- 
pherical white band, and another, which is broader and blackish- 
chestnut-coloured, immediately below it, more smooth beneath, 
white round the middle-sized umbilicus; aperture oblique, 
nearly circular, pale orange-coloured inside ; peristome double ; 
inner edge continuous, wrinkled, very much protracted at the 
upper and right side; external edge thickened, expanded, an- 
gulated above, interrupted near the penult whorl. Operc. ? 
Height 20, greatest breadth 30, least br. 28 mill. 
Cyclostoma Menkeanum, Philippi, in Z. f. If. 1847, p. 123; Pfr. 
Ic. n, 185, p. 171, t. 28, f. 658. 
