84 Contributions to Indian Malacology. [No. 2, 
for a short distance with close fine costulation, which extends beneath 
to the umbilicus and renders the shell opaque in that spot. Constric- 
tion long, smooth, swelling considerably in front towards the mouth. 
Sutural tube short, about + to 4 of the periphery of the penultimate 
whorl. Aperture oblique, circular, deeply sinuate at the junction 
with the penultimate whorl, and at the lower right margin; peristome 
double, the inner lip projecting and continuous, outer lip retrorelict. 
Operculum horny, multispiral, externally concave. 
Millem. inch. 
MiajOr CIAMELET,  uese-ncmearse-cs 3 0.12 
OE CUEEG wees ae ss dar sinan em 21 0.09 
SRS 5 tera Rie cen pes Siete 1i 0.05 
Habitat—Phoung do, near Cape Negrais, Arakan. 
Very near A. humilis, W. Blanf., from Pegu, but distinguished by 
its lower spire, wider umbilicus, more sinuous mouth, and especially by 
its high polish, in which it is only equalled by A. mtidus, W. Blantf. 
27. <A. GLABER, n. sp. 
Shell broadly umbilicated, conoidly depressed, solid, reddish white, 
the upper whorls darker, rather dull in lustre, smooth, except at the 
swollen portion of the last whorl, which is very finely and closely 
costulated. Spire depressly conoid; apex rather obtuse; suture im- 
pressed. Whorls 4, convex, the last obsoletely subangulate at the 
periphery, moderately swollen at the side, then constricted, descending 
a little near the mouth. Constriction of moderate length, smooth, 
slightly swollen in the middle. Sutural tube of moderate length. 
Aperture diagonal, circular ; peristome more or less distinctly duplex, 
thickened, moderately expanded. Operculum dark coloured, horny, 
externally concave, internally convex, with a prominent central nucleus. 
Millem. inch. 
Major diameter..3.-...<ceorss-6 7 0.30 
D1 Te Voy a FH ae 6 0 24 
MTT ce ied 4h 0.18 
Habitat—Akyab, Arakan; the hills south of the harbour. 
This species closely resembles A. Ingrami, W. Blant., for which I 
for some time mistook it, but it is distinguished by the absence of any 
sculpture on the upper whorls, and also by the more oblique mouth, 
a 
