CYCLOPHORIDA. 157 
Cyclostomus undulatus, Gray, Cat. Cycl. p. 44, n. 6; Pfr. Pnewm. 
Mon. p. 223. 
Cyclostomus fimbriatus, Pfr. Consp. n. 328. 
Hab. The island Mauritius. 
58. CycLosToMUS GLAUCUS. B. M. 
Shell ovate-conic, rather thick, closely striated spirally, of a red- 
dish colour, with a glaucous tint; spire conoidal, rather blunt ; 
suture slight, bordered with white, somewhat crenulated ; whorls 
43, moderately convex, the last sometimes shortly detached near 
the aperture; umbilicus very small, not pervious; aperture 
ovate, rather angular, fulvous and shining within; peristome 
straight, with the margins angularly joined above, left margin 
slightly thickened. Operculum testaceous, flat. Length 15, 
breadth 10 mill. 
Cyclostoma glaucum, Sow. Thes. n. 28, p. 100, t. 24, £.39; Pfr. Ic. 
n. 67, p. 72, t. 9, £. 3-5. 
Cyclostoma striatum, Menke, Synops. ed. i. p. 40 (not described). 
Cyclostoma breviale, Gray, JDSS. Brit. Mus. 
Cyclostomus glaucus, Gray, Cat. Cycl. p. 45, n.11; Pfr. Consp. 
h. 329; Pneum. Mon. p. 223. 
Hab. Alexandrette. 
59. CycLOSTOMUS COSTULATUS. B. M. 
Shell conoidally-globose, rather solid, sculptured with crowded 
concentric ridges, faintly transversely striated within the inter- 
stices, grayish-red ; spire conoidal, with the apex nipple-shaped, 
sherry-coloured; whorls 5, convex, last ventricose; umbilicus 
extremely narrow, not pervious; aperture scarcely oblique, 
ovate-circular ; peristome simple, straight, continuous, slightly 
angulated above. Operculum of five volutions, with the nu- 
cleus black. Length 15, breadth 11 mill. 
Cyclostoma costulatum, Zegl. Mus.; Rossm. Ic. vi. p. 49, t. 28, 
f. 395 ; Pot. et Mich. Gal. i. p. 234, t. 24, f.1,2; Pfr. Ic. n. 66, 
p. 71, t..9, f. 6-8. 
Cyclostoma sulcatum (not Oliv.), Sow. Thes. n. 27, p. 100, t. 23, 
f. 31. 
Cyclostomus costulatus, Gray, Cat. Cycl. p. 44, 0.10; Pfr. Consp. 
n. 330; Prneum. Mon. p. 224. 
8. Larger; flesh-coloured whitish, with the apex fulvous; length 
19, breadth 13 mill. 
Cyclostoma Olivieri, Sow. MSS; Pfr. Ic. n. 169, p. 156, t. 21, 
f. 20, 21; Charp. in Zeitschr. f. Mal. 1847, p. 144. 
P 
