78 CATALOGUE OF PHANEROPNEUMONA. 
14. LepropoMA HELICOIDES. B. M. 
Shell top-shaped, thin, whitish, sometimes painted with minute 
brownish lines, or striped and marbled with chestnut-colour ; 
spire conical, pointed ; whorls 6, rather flat, with 5-6 obsolete 
spiral ridges, the last one sharply keeled on its periphery, 
moderately convex on both sides, smooth beneath ; umbilicus 
excessively narrow, not pervious ; aperture oblique, ovate, rather 
circular, somewhat pearly inside; peristome thin, expanded 
and reflected, with distant margins; columellar margin slightly 
sinuate. Height 16, greatest breadth 21, least br. 17} mill. 
Cyclostoma helicoides, Grateloup, in Act. Soc. Linn. Bord. xi. . 
p. 442, t. 3, f.14; Pfr. Ic. n. 134, p. 129, t. 15, f. 25, 26, t. 16, 
f. 1-3. 
Cyclostoma Stainforthii, Sow. im Proc. Z. S. 1842, p. 80; Thes. 
n. 129, p. 136, t. 29, f. 215, 216, t. 30, f. 217 ; Reeve, Conch. Syst. 
t. 183, f. 6. 
Leptopoma helicoides, Pfr. in Z. f. M. 1847, p. 109, n. 29 ; Consp. 
n. 159; Gray, Cat. Cyel. p. 27,n. 19; Pfr. Mon. Pneum. p. 110. 
Hab. The Philippine Islands, Ticao, Masbate, Siquijor, Panay 
(H. Cuming). 
15. LepropoMA INSIGNE. B. M. 
Shell rather conoidal, very thin, membranous, silk-shining, horny- 
olivaceous ; spire conical, pointed ; whorls 5, convex, the upper 
ones smooth, the two last obliquely striate, with four spiral 
ridges above, the last one very broad, sharply keeled on the 
periphery, ventricose beneath, with two scarcely prominent 
ridges ; aperture little oblique, roundish, sublunate, somewhat 
pearly inside ; peristome simple, shortly reflected, with distant 
margins; columellar margin white, slightly dilated, half cover- 
ing the umbilicus, which is extremely narrow. Height 11, 
greatest breadth 15, least br. 12 mill. 
Cyclostoma insigne, Sow. in Proc. Z. 8. 1848, p. 62; Thes. n. 132, 
p. 138, t. 30, £. 232; Pfr. Ic. n. 107, p. 107, t. 12, f. 19, 20. 
Leptopoma insigne, Pfr. in Z. f. M. 1847, p. 108, n. 10; Consp. 
n. 160; Gray, Cat. Cyel. p. 25, n. 9; Pfr. Preum. Mon. p. 111. 
Hab. Island of Mindoro, Calapan (H. Cuming). 
16. Leprofoma CILIATUM. 
Shell depressed-turbinate, rather thin, slightly striate, chestnut- 
coloured, with fulvid streaks and spots; spire conoidal, with 
the apex pointed; whorls 5, moderately convex, the last one 
keeled on the periphery, furnished on the keel, with a single 
row of close-set hairs, more flattened beneath; aperture oblique, 
nearly circular, whitish inside; peristome simple, slightly ex- 
