94 CATALOGUE OF PHANEROPNEUMONA. 
16. MEGALOMASTOMA FUNICULATUM. B. M. 
Shell shortly rimate,turreted-oblong, thin, striate and irregularly 
foveolate, rather pellucid, brown; spire elongate, with the apex 
rather blunt; whorls 7, moderately convex, the last forming 
about 4 of the whole length, furnished beneath with a cord- 
shaped keel; aperture nearly perpendicular, scarcely produced 
with its base, circular; peristome continuous; flesh-coloured, 
shortly affixed, expanded and reflected all round. Length 223, 
breadth 84 mill. 
Cyclostoma funiculatum, Denson, in Journ. As. Soc. vii. 1838, 
p. 217; Sow. Thes. Suppl. n. 195, p. 166*, t. 31 B. f. 316, 317; 
Pfr. Ie. n. 219, t. 31, f. 27, 28. 
Megalomastoma funiculatum, Gray, Cat. Cycl. p. 31, n. 3; Pfr. 
Consp. n. 196; Pneum. Mon. p. 133. 
fab. Darjiling, Sikkim-Himalayah. 
17. MeGALOMASTOMA GUILDINGIANUM. 
Shell subperforate, oblong-turreted, rather solid, nearly smooth, 
shining, chestnut-coloured; spire elongate, with the apex sub- 
truncate; whorls 8, moderately convex, the last one narrower, 
obsoletely spirally furrowed, rounded beneath; aperture rather 
perpendicular, nearly circular; peristome white, double; inner 
edge continuous, expanded, with the left margin slightly chan- 
nelled ; outer edge reflected, slightly angulated above, with the 
columellar margin dilated and expanded. Length 22, breadth 
8 mill. 
Cyclostoma Guildingianum, Pfr. in Z. f. Uf. 1851, p. 28; Je. n. 218, 
t. 31, f. 25, 26. 
Megalomastoma Guildingianum, Pfr. Consp. n. 197; Pneuwm. Mon. 
p. 134. 
Locality unknown. 
18. MEGALOMASTOMA PAUPERCULUM. 
Shell small, cylindrically turreted, shining, of an olivaceo-fulvous 
colour; spire rather obtuse, with six slightly-rounded volutions, 
very finely striated with the lines of growth (sometimes rendered 
slightly rugulose by erosion) ; suture distinct, rather deep; aper- 
ture nearly circular; peritreme slightly thickened, rounded, and 
reflected, very slightly foliaceous and interrupted at the last 
volution; umbilicus small, surrounded by a somewhat obsolete- 
raised line. Length 18, breadth 8 mill. 
Cyclostoma pauperculum, Sow. Thes. Suppl. nu. 196, p. 166%, t. 31 B. 
f.318; Pfr. Ic. n. 412, t. 49, £. 37, 38. 
Megalomastoma pauperculum, Pfr. Consp. n. 198; Pnewm. Mon. 
p. 134. 
Hab. Bhotan, Sikkim-Himalayah (Benson). 
