go Records of the Indian Museum, [Voy. XII, 
Nassa (Alectrion) unicolor, Hombron and Jacquinot. 
Voy. Astrol. et Zel., 1853, V, p. 76, pl. xxi, figs. 13-15. 
Semiramis Bay, 2-6 fathoms, in fine mud; Port Blair. 
A single juvenile example from each locality. 
Family CAPULIDAE. 
Calyptraea pellucida, Reeve. 
Conch. Icon. (Trochita), sp. 2, pl. 1, figs. 2a-b. 
A single specimen on the inner side of a valve of Tellina 
viator, Preston, from Port Blair. 
Family NATICIDAR. 
Natica kempi, sp. n. 
(Figs. 3, 3a, 30, p. 88.) 
Shell small, solid, ovate. of a yellowish ground colour, painted 
with rather fine, closely-set, transverse, zig-zag, chestnut mark- 
ings and irregularly, broadly, spirally banded with pale reddish- 
chestnut ; whorls 4, the first three small, the last large, convex, 
finely, transversely striate; sutures so lightly impressed as to be 
almost linear; umbilicus deep, sealed, but for a comparatively 
narrow opening, by a heavy convex callus which is stained with 
dark livid purple; columella margin obliquely descending, spread- 
ing above into a well defined, parietal callus which is so thickened 
as to take on almost the appearance of a nodule near its junction 
with the upper margin of the labrum; labrum sub-acute above 
and in front where it is stained with a livid tinge, slightly dilated 
below and considerably thickened where it merges into the base 
of the columella margin; aperture ovate; operculum thick, 
shelly, polished shining, semi-transparent, but marked with opaque, 
radiating bands of milk white, two-whorled, with eccentric uu- 
cleus and strongly spirally striate. 
Alt. 7°5, diam. maj. 5°75, diam. min. 4°75 mm. 
Aperture: alt. 4, diam. 2°25 mm. 
Hab.—Port Blair, Andaman Islands (S. Kemp). 
Sigaretus (Eunaticina) calaraphe, sp. n. 
(Figs. 4, 4a.) 
Shell small, moderately solid, vellowish-white ; whorls 4, the 
first two small, the last two rapidly increasing, the last large, long, 
sculptured with fine, but rather irregular, slightly wavy, incised 
spiral striae; suture canaliculate ; umbilicus moderately narrow, 
deep, partly concealed by the outward expansion of the calloused 
columella margin ; columella margin obliquely descending, curved 
below, outwardly expanded, the expansion appearing as a wing- 
