74 CATALOGUE OF PHANEROPNEUMONA. 
margin rather indented. Height 94, greatest breadth 12, 
least br. 9 mill. 
Cyclostoma melanostoma, Petit, in Revue Zool. 1841, p. 308; Guér. 
Mag. 1842, t. 56; Hombr. & Jacq. Voy. Pol. Sud. Moll. t. 12, 
f. 20-24; Pfr. Ic. n. 189, p. 173, t. 25, f. 12-15. 
Leptopoma melanostoma, Pfr. in Z. f. M. 1847, p. 108, n. 5; 
Consp. n. 150; Gray, Cat. Cycl. p. 24, n. 7. 
Leptopoma melanostomum, Pfr. Pneum. Mon. p. 104. 
Hab. New Guinea. 
6. LEPTOPOMA LUTEOSTOMUM. B.A 
Shell perforate, globose-conical, thin, girdled with distant, slightly- 
raised spiral lines, pellucid, white or fulvous; spire conical, 
pointed ; whorls 5, convex, last ventricose; aperture oblique, 
nearly circular ; peristome angularly reflected into the plane of 
the aperture, orange-coloured, with the margins approximate, 
joined by a thin callus; columellar margin dilated into an in- 
distinct angle. Height 8, greatest breadth 10, least br. 8 mill. 
Oyclostoma luteostoma, Sow. in Proc. Z. S. 1848, p. 625; Thes. 
n. 125, p. 135, t. 30, f. 228, 229. 
Cyclostoma luteostomum, Pfr. Jc. n. 93, p. 96, t. 12, f. 21-23. 
Leptopoma luteostoma, Pfr. in Z. f. M. 1847, p. 108, n. 9; Consp. 
n. 151; Gray, Cat. Cyel. p. 24, n. 5. 
Leptopoma luteostomum, Pfr. Prewm. Mon. p. 104. 
Hab. The Philippine Island of Guimaras (H. Cuming). 
§ 2. Peristome reflected, shell globose-conical, very slightly keeled. 
7. LEPTOPOMA IMMACULATUM. B. M. 
Shell perforate, globose-conical, thin, very closely spirally striate, 
diaphanous, whitish, painted sometimes with chestnut-coloured 
points, spots or streaks; spire conical, pointed; whorls 55, 
convex, the last one furnished above with several obsolete 
ridges, and with a single stronger keel on the periphery, convex 
beneath ; aperture scarcely oblique, rather circular; peristome 
thin, broadly expanded, with distant margins ; columellar mar- 
gin dilated in the middle, but not covering the umbilicus, which 
is exceedingly narrow, and not pervious. Height 12, greatest 
breadth 17, least br. 12 mill. 
Turbo immaculatus, Chemn. Conch. Cab. ix. P. i. p. 57, t. 128, 
f. 1063. 
Turbo marginellus, Gmel. Syst. p. 8602, n. 102. 
Turbo levis, Wood, Ind. Suppl. t. 6, f. 5. 
Cyclostoma leve, Gray, in Wood, Suppl. p. 36; Sow. in Proc. Z. S. 
1843, p. 63; hes. n. 120, p. 133, t. 29, f. 220-222 ; A. Adams 5 
Reeve, Voy. Samarang, Moll. p. 57, t. 14, f. 3. 
