82 DESCRIPTIONS. 
Obs.—This small shell is allied to the N. marginulata, Lam., 
and also to the N. fraudulenta, Marr. 
775 N. pusilla, Marrat.—A N. sequijorensis, A. Ad., in miniature. 
Shell ovately-turreted, pale reddish-brown, banded with 
darker colour, the upper whorls and behind the lip costate, 
the last whorl finely striated longitudinally, grooved near 
the base, almost smooth in the middle, aperture oval, columella 
slightly wrinkled, outer lip thick, prickly denticulated on 
the edge. 8. Archer, Singapore. 
1125 N. lauta, Marrat.—Shell acuminately-conical, of a greyish 
lead colour, with a few interrupted reddish-brown transverse 
lines, whorls angular, with prominent nodules at the angles, 
transversely ridged and finely striated, strongly ribbed, ribs 
distant, apical whorls translucent, aperture angular, outer 
lip thickened, toothed on the inside, columella thin, plicate. 
Belcher, Malacca. 
Another variety has white bands, and the red-brown lines 
are replaced by white ones. Belcher, Malacca. 
Obs.—These are intermediate between the N. stimpsoniana, 
C. B. Ad., and N. exilis, Powis. 
554. N. crassicostata, Marrat.—(Not the Pamphlet, p. 6.) Shell 
ovately-conical, pale drab, waxy, with two leaden bands, one 
near the middle of the body-whorl, the other in dots in the 
interstices near the sutures, whorls convex, strongly ribbed, 
very thick behind the lip, aperture somewhat oval, columella 
smooth in two and wrinkled in other two varieties, outer lip 
very thick, inside plicate. Bombay. 
Obs.—Between the short, broad forms of N. nodifera, Powis, 
and the N. costata, A. Ad. 
972 N. quinquecostata, Marrat.—Shell ovately-turreted, white, 
apical-whorls flesh coloured, whorls rounded, somewhat 
angular below the sutures, body-whorl with five prominent 
ribs, with one, sometimes two, smaller intermediate ones 
between them, interstices finely striated, aperture semi-ovate, 
columella smooth with two oblong folds at the base, outer 
lip thickened, interior plicate. This shell would be thought 
