CYCLOPHORIDA. 147 
Cyclostoma multifasciata, Grateloup, in Act. Bord. xi. p. 436, t. 3, 
£/ 3: 
2 Tropidophora multifasciatum, Gray, Cat. Cycl. p. 41, n. 16. 
Cyclostomus multifasciatus, Pfr. Consp. n. 304; Pnewm. Mon. 
p. 209. 
Hab. Madagascar (Duisabo). 
33. CycLOSTOMUS ZONATUS. 
Shell subumbilicate, globose-pyramidal, rather thin, nearly smooth 
(slightly decussated under a lens by longitudinal and spiral 
strie), whitish-gray; spire conical, rather pointed; suture 
rather deep ; whorls 6, rounded, last ventricose, girdled with a 
broad blackish band below the middle, spirally grooved round 
the umbilicus ; aperture rather perpendicular, ovate-roundish ; 
peristome interrupted, milk-white, broadly reflexed. Height 
and breadth 28 mill. 
Cyclostoma zonatum, Petit, in Journ. Conch. 1850, i. p. 50, t. 4. £. 7. 
Cyclostomus zonatus, Pfr. Consp. n. 305; Pnewm. Mon. p. 209. 
B. Smaller, with one or more bands; right margin of the peri- 
stome broadly expanded; columellar margin narrow, reflexed 
above into a short lamina, which almost covers the umbilicus. 
Height 20, greatest breadth 20, least br. 15 mill. (Pfr, Ze. n. 291, 
t. 39, f. 22, 23.) 
Hab. Madagascar. 
34, CYCLOSTOMUS OBSOLETUS. B. M. 
Shell turbinate, rather solid, faintly spirally striate above, slightly 
shining, ash-gray, painted with various blueish-fuscous bands; 
spire conical, rather pointed; whorls 6, convex, the last one 
deeply grooved spirally round the funnel-shaped umbilicus ; 
aperture scarcely oblique, ovate, grayish-chestnut-coloured 
within; peristome simple, white, broadly expanded, with the 
margins joined by a lunarly-indented callus. Height 22, great- 
est breadth 29, least br. 23 mill. 
Cyclostoma obsoleta, Lam. Hist. vi. p. 144, n.7; Hd. Desh. viii. 
p- 355; Deless. Recueil, t. 29, f.11; Chenu, Ill. Conch. t. 1, f. 11. 
Cyclostoma obsoletum, Reeve, Conch. Syst. t. 183, f.4; Sow. Thes. 
n. 88, p. 121, t. 27, f. 124; Pfr. Ic. n. 23, p. 32, t. 5, f. 8, 9. 
Tropidophora obsoleta, Gray, Cat. Cycl. p. 40, n. 6. 
Cyclostomus obsoletus, Pfr. Consp. n. 306; Pneuwm. Mon. p. 210. 
B.? Cyclostoma obsoleta var., marmorata, G'rat. in Act. Bord. x1. 
p. 443, t. 3, £17. 
Hab. Madagascar. 
