128 CATALOGUE OF PHANEROPNEUMONA. 
Cyclostoma naticoide, Sow. Thes. n. 78, p. 117, t. 26, f. 108, 109. 
Otopoma foliaceum, Gray, Cat. Cyel. p. 35, n. 1 (part). 
Otopoma naticoides, Pfr. Consp. n. 263; Pnewm. Mon. p- 181. 
Hab. Socotora. 
5. OropomMa GUILLAINI. 
Shell globose-conical, solid, striate, slightly shining, whitish; spire 
conical, with the apex rather pointed; whorls 6, convex, ‘sculp- 
tured, near the suture, with 6-8 raised spiral lines, last whorl 
ventricose ; aperture little oblique, angularly roundish ; peri- 
stome thickened, slightly interrupted, with the right and basal 
margins shortly reflected ; columellar margin much dilated, 
vaulted, nearly covering the narrow umbilicus. Height 24, 
oreatest breadth 26, least br. 23 mill. 
Cyclostoma Guillaini, Petit, in Journ. Conch. 1850, i. P- 51, t. 4, 
P05 Hfr: eon: 234, t. 34, f. 758s 
Otopoma Guillaini, Pfr. Conep. n. 264; Pneuwm. Mon. p. 182. 
flab. Mogadoxa, coast of Africa. 
6. OTOPOMA UNIFASCIATUM. 
Shell subglobose, with an acuminated but decollated spire, consist- 
ing of four rounded, smooth volutions, with faint spiral strie ; 
volutions whitish, the last with a single fuscous band near the 
base; suture distinct; aperture circular, orange-coloured within, 
peritreme white, reflected, sinuated above, thickened on the side 
of the umbilicus, which is small and spirally grooved. Height 
20, breadth 22 mill. 
Cyclostoma unifasciatum, Sow. in Cat. Tank. App. p. vill. n. 1016; 
Thes. n. 81, p. 119, t. 26, f. 105, 106; Pfr. Jc. n. 188, p. 173, t. 25, 
f. 4, 5 (from Sow.). 
Otopoma unifasciatum, Pfr. Consp. n. 265; Pneum. Mon. p. 183. 
Hlab. Madagascar (Sowerby). 
Compare Otopoma Listeri. 
§ 3. Axis umbilicated; right edges of peristome straight. 
7. Oropoma ? PHILIPPIANUM. 
Shell globose-turbinate, thin, faintly striate, decussated above by 
minute spiral lines, fulyous-whitish, painted, on the upper side, 
~ with 3-4 narrow reddish-brown bands; spire turbinate, with the 
apex blackish; whorls 5-53, rounded, the last one girdled, below 
the middle, with a single broader band, smooth and uniformly 
white beneath ; aperture little oblique, rather angularly round- 
ish, of the same colour within; peristome slightly interrupted, 
with the margins joined by thin callus, right margin straight, 
