86 CATALOGUE OF PHANEROPNEUMONA. 
2.. DIPLOMMATINA FOLLICULUS. B. M. 
Shell shortly rimate, acuminately ovate, obliquely distinctly ribbed, 
pale brownish-white; spire conical, rather pointed; whorls 7 ; 
convex, the last one narrower, subascendant anteriorly, scarcely 
forming } of the whole length; aperture rather perpendicular, 
nearly circular; peristome double; outer edge shortly expanded, 
with the margins approximate, joined by callus; right margin 
arcuate; columellar margin dilated, expanded. Length 32, 
breadth 2 mill. 
Carychium costatum, Hutton, ISS. 
Bulimus folliculus, Pfr. Symb. Hist. iii. p. 83; Monogr. Helie. ii. 
p. 81, n. 208; Reeve, Conch. ii. n. 644, t. 87. 
Diplommatina folliculus, Benson, in Ann. & Mag. 1849, Sept. 
p. 193; Gray, Cat. Cycl. p. 54, n.1; Pfr. Consp. n. 179; Le. t. 48, 
f, 32, 33; Pneum. Mon. p. 122. 
Hab. India; Simla, near Sutlej (Hutton), Landour (Boys). 
3. DIPLOMMATINA COSTULATA. B. M. 
Shell imperforate, cylindric-ovate, whitish, very minutely ribbed, 
with the ribs oblique, regular, approximate; spire ovate-conical, 
rather blunt; whorls 3, the upper ones enlarging rapidly, last 
narrower, rather ascending anteriorly; suture deep; aperture 
nearly perpendicular, rather circular; peristome thin, almost 
continued, expanded, double; outer edge reflected, distinct 
from the ribs. Length 2, breadth scarcely 1 mill. 
Carychium costulatum, Hutton, ALSS. 
Carychium parvulum, Boys, WSS. in Brit. Mus. 
Diplommatina costulata, Gens. in Ann. & Mag. 1849, Sept. p. 194; 
Pfr. Consp. un. 180; Ic. t. 48, f. 34-85; Pneum. Mon. p. 122. 
Diplommatina costulatum, Gray, Cat. Cycl. p. 55, n. 2. 
flab. India, Western Himalayah (Benson), Landour (Boys). 
4, DipLomMMATINA HutTTonI. 
Shell sinistral, rimate, ovate-conical, thin, with very minute rib- 
like striz, silk-shining, fulvid-whitish; spire rather turreted, 
with the apex pointed; whorls 53, convex, the last one narrower ; 
aperture rather oblique, depressedly circular; peristome nearly 
continued, double; inner edge very short, with an obsolete 
callous tooth on the columella; outer edge shortly expanded. 
Length 2}, breadth 1 mill. 
Diplommatina Huttoni, Pfr. in Proc. Z. S. 1851; Consp. n. 181; 
Ic. t. 48, f. 36, 37; Pneum. Mon. p. 123. 
Hab. India, Muporee. 
