CYCLOPHORIDA. 73 
Cyclostoma concinnum, Sowerby, in Proc. Z. S. 1843, p. 61; Thes. 
n. 122, p. 134, t. 29, f. 223, 224; Delessert, Lecueil, t. 38, f. 14; 
Chenu, Lil. Conch. t. 1, f. 18. 
Cyclostoma periucidum, Pfr. Jc. n. 11, p. 19, t. 2, f. 8-10, t. 16, £.8. 
Leptopoma perlucidum, Pfr. in Z. f. M. 1847, p. 108, n.4; Consp. 
n. 148 ; Gray, Cat. Cycl. p. 23, n.1; Pfr. Pnewm. Mon. p. 108. 
Hab. The Philippine Islands, Bohol, Mindanao, Camiguing (H. 
Cuming). 
3. LEPTOPOMA IGNESCENS. 
Shell perforate, globose-coniecal, thin, closely sculptured with very 
minute spiral strize, diaphanous, shining, pale fiery-reddish ; 
spire turbinate, with the apex rather blunt; suture deep; 
whorls 43, convex, the last one more distinctly spirally furrowed 
beneath ; aperture oblique, nearly circular; peristome simple, 
expanded, with the margins approximate, not joined. Height 
115, greatest breadth 14, Jeast br. 11 mill. 
Cyclostoma ignescens, Pfr. in Proc. Z. S. 1851; Ie. n. 339, t. 42, 
PUY 2. 
Leptopoma ignescens, Pfr. Consp. un. 149, p. 57; Pnewm. Mon. 
p. 103. 
Hab. New Ireland. 
4, LEPTOPOMA BICOLOR. 
Shell perforate, globose-turbinate, thin, very closely spirally striate 
under a lens, diaphanous, whitish, with two chestnut-coloured 
bands; spire turbinate, with the apex rather blunt ; whorls 5, 
moderately convex, the last one rounded, marked with 3-4 
distant scarcely-raised lines ; aperture oblique, nearly circular ; 
peristome simple, nearly equally expanded into the plane of 
the aperture, with the margins joined by a very thin callus ; 
columellar margin slightly sinuate. Height 10, greatest 
breadth, 133, least br. 10 mill. 
Cyclostoma bicolor, Pfr. in Proce. Z. S. 1852; Je. n. 401, t. 48, 
£, 95-37. 
Leptopoma bicolor, Pfr. Preuwm. Mon. p. 104. 
Locality unknown. 
5. LeEpToPoMA MELANOSTOMUM. 
Shell perforate, globose-conical, thin, smooth, shining, rather 
translucent, white ; spire conical, pointed ; whorls 52, convex, 
the lower ones sometimes banded with reddish-brown lines, the 
last one ventricose, not descending ; aperture rather oblique, 
circular ; peristome interrupted, black, with the right and lower 
margins expanded into the plane of the aperture, columellar 
H 
