38 CATALOGUE OF PHANEROPNEUMONA. 
5, CYcLOPHORUS AQUILA. ; B.M. 
Shell depressed-turbinate, rather solid, nearly smooth, fulvous, with 
darker marble stripes and a narrow white girdle at the peri- 
phery ; spire rather raised, with the apex pointed ; whorls 5, 
rather flattened, the last one large, obsoletely angulated ; um- 
bilicus of middle size, open; aperture nearly perpendicular, 
transversely a little dilated, pale fulvid inside; peristome ex- 
panded, rather thickened, fulvid, with the margins joined by 
a thin callus; columellar margin dilated and reflected at its 
base. Opere. typical. Height 21, greatest breadth 34, least 
br. 28 mill. a 
Cyclostoma aquilum, Sow. in Proc. Z. 8S. 1843, p.61; Thes. n. 92, 
p..123, 4.27, £131); ¢Pfr.Je.n.i6 pan t..8, f4l 2. 
Cyclophorus aquila, Pfr. in Z. f. Mf..1847, p..107 ;.Consp. n. 69 ; 
Gray, Cat. Cyc. p. 16, n. 6; Pfr. Pneum. Mon. p. 57. 
Cyclostome subtrochiforme, Sowleyet, in Voyage Bonite. Moll. t. 30, 
f, 22-24, 
8. Larger, passing to C. tuba; height 26, greatest breadth 46 mill. 
Cyclostoma aquilum, var., Pfr. Ic. t. 2, f. 1, 2. : 
Cycl. perdix var., Sow. Thes. t. 27, £..128. 
Hab. Singapore (H. Cuming) ; China (Brit. Mus.). 
6. CycLoPHoRUS. PEARSONI. 
Shell depressed-turbinate, smooth, with obsolete spiral striee, varied 
and broadly banded with chestnut-brown above, with brownish 
spiral lines beneath, with a white band at the periphery, and 
another of blackish-chestnut-colour immediately below. it ; 
spire depressed-conoidal, with the apex pointed; . whorls 5, 
moderately convex, the last one large, convex beneath ; aper- 
ture scarcely oblique, large, circular, blueish inside ; peristome 
expanded, reflected on all sides, pale .orange-coloured ; the 
margin joined by a short callus ; umbilicus rather narrow, open, 
more narrow interiorly. - Height 25, greatest’ breadth 42, least 
br. 33 mill. - (B.) 
Cyclostoma Pearsoni, Benson, in Ann. and Mag. 28, ser. viii. 1851, 
p. 185; Pfr. Feen. 411,'t.-49, f 34-36. 
Cyclophorus Pearsoni, Pfr. Consp. n. 70; Pneum. Mon. p. 58. 
Hab. India, the Khasya Hills. 
7. CYCLOPHORUS VOLYVULUS. B. M. 
Shell globose-conic, solid, smooth, fulvid, varied with chestnut- 
coloured stripes and spots; spire conoidal, with the apex blunt ; 
whorls 5, rounded, the last one very obsoletely angulated at the 
periphery, with a broad blackish-chestnut-coloured band below 
the periphery ; umbilicus of middle size, funnel-shaped ; aper- 
ture oblique, nearly perpendicular, blueish-whitish within ; 
peristome whitish, double; internal edge continuous, thickened, 
