CYCLOPHORID &. 129 
columellar margin dilated, freely reflected, half concealing the 
narrow pervious umbilicus. Operculum? Height 22, greatest 
breadth 26, least br. 21 mill. 
Turbo ligatus var., Chemn. Conch. ix. P. ii. p. 60, t. 123, f. 1073, 
1074 (ed. alt. t. 4, f. 14, 15). 
Cyclostoma ligatum, Sow. Thes. n. 21, p. 98, t. 23, £24. (Not Miller.) 
Cyclostoma Philippianum, Pfr. Jc. n. 356, t. 44, f. 23, 24. 
Otopoma Philippianum, Pfr. Consp. n. 266, p. 61; Pneum. Mon. 
p. 183. . 
Locality unknown. 
8. OTOPOMA CLATHRATULUM. B. M. 
Shell conoidally-globose, rather thick, regularly trellised above by 
crowded longitudinal and spiral raised lines, brownish-flesh- 
coloured, marked often with small brown spiral lines above; 
spire conoidal, rather blunt; whorls 5, convex, the upper ones 
blackish-bordered above the ‘suture, the last one smooth below 
the middle; umbilicus narrow, pervious; aperture obliquely 
ovate, angulated above, yelk-coloured within ; peristome straight, 
rather thickened, with the margins nearly contiguous, angularly 
joined by a continued callus; columellar margin scarcely re- 
flexed. Height 18, greatest breadth 22, least br. 18 mill. 
Cyclostoma clathratula, Récluz, in Rev. Zool. 1843, p.3; Mag. Zool. 
1843, t. 74. 
Cyclostoma clathratulum, Sow. in Proc. Z. S. 1843, p. 30; Thes. 
n. 17, p. 97, t. 23, f. 15, 16; Pfr. Ic. n. 29, p. 38, t. 5, f. 5-7. 
Otopoma foliaceum jun., Gray, Cat. Cycl. p. 35. 
Otopoma clathratulum, Pfr. Consp. n. 267; Pnewm. Mon. p. 184. 
Hab. Yemen, Arabia (Sowerby), Socotora (Récluz). 
9. OropoMA ? VITELLINUM. 
Shell globose-conical, solid, coarsely decussated by crowded strize 
of growth and more crowded spiral ridges, yellowish-reddish, 
with irregular paler stripes; spire raised, conical, with the apex 
rather blunt, blackish; whorls 5, convex, the last rounded, 
smooth below the middle, spirally grooved in the narrow per- 
vious umbilicus; aperture scarcely oblique, ovate-roundish; 
peristome simple, with the margins approximate, joined by 
callus ; right margin straight, rather sinuate ; left margin dilated 
and expanded in the middle. Height 17, greatest breadth 19, 
least br. 17 mill. 
Cyclostoma vitellinum, Pfr. in Proc. Z. S. 1851; Ic. n. 353, t. 43, 
f, 35, 36. 
Otopoma ? vitellinum, Pfr. Consp. n. 268, p. 61; Pneum. Mon. 
p. 184. 
Hab. Madagascar. 
