72 Contributions to Indian Malacology. [No. 2, 
related species, as N. infula, Bens., N. cacwminifera, Bens., and N. 
attegia, Bens., N. confinis is distinguished by its sculpture. 
9. N. cuLMEN, n. sp. 
Shell very minutely perforated, trochiform, very thin, horny, trans- 
lucent. Spire conical, apex obtuse, suture impressed. Whorls 6, convex 
above and ornamented with fine raised spiral lines, and oblique strie ; 
the last whorl sharply keeled at the periphery, not descending, 
swollen and minutely decussately striated beneath. Aperture but 
hittle oblique, subquadrately lunate; height less than the breadth; 
peristome simple, thin; margins distant, columellar vertical, slightly 
reflexed above. 
Millem. inch. 
Major diameter,..........se:0--++ 5z 0.23 
Minor ditto |. sd J. suimderevanck = 54 0.21 
INS ABs poaptpec nance deh» Phvecgteldich= ‘ 54 0.22 
Aperture 3 millem. broad, 2 high. 
Habitat—Akoutoung and banks of the Tsanda Khyoung, “Henzada 
district, Pegu. 
Kasily distinguished from N. confinis and N. attegia by its smaller 
size and higher spire; from NV. ara, by the sides of the spire being 
straight and not concave, and from the Bengal N. infula, Bens., by 
its sculpture, and its sharper keel. 
10. N. GRaruLator, n. sp. 
Shell perforated, turbinate, thin, whitish horny. Spire conical ; 
apex obtuse ; suture impressed. Whorls 5, slowly and regularly in- 
creasing, convex, spirally lirate and marked with oblique strie of 
growth above; the last whorl keeled at the periphery, convex and 
decussately marked with concentrfe and radiating strie below, not 
excavated around the perforation. Aperture diagonal, subtrapezoidal, 
breadth exceeding the height; peristome thin ; margins distant, united 
by a callus; basal deeply sinuate ; columellar vertical, forming a right 
angle with the basal, and briefly triangularly reflexed above; reflexed 
portion thickened and passing half round the perforation. 
Millem. inch. 
Major diameter,. .c-<c-ses<sooatee 5 0.2 
WE Or, CBO, cic cthh geen oe 43 0.18 
add, dep teal diase anes 4 0.16 
