No 
96) 
Records of the Indian Museum. [Mer Sens 
Order PROSOBRANCHIATA. 
Suborder PECTINIBRANCHIATA. 
Family NASSIDAE. 
Nassa denegabilis, Preston. 
Rec. Ind. Mus. X, 1914, pp. 297-298. 
Ennur backwater, Madras; Cochin backwater, near Erna- 
kulam. 
Nassa kieneri, Desh. 
Moll. Ile Bourbon, 1863, p. 129. 
Cochin backwater, near FMrnakulam ; a single young specimen 
(F. H. Gravely). 
Nassa orissaensis,! Preston var. ennurensis, var. n. 
Shell differing from the type in its much larger size, it having 
6 whorls, and in its more exag- 
geratedly fusiform shape, more- 
over both the canal and aper- 
ture are narrower. 
Alt. 10°25, diam. maj. 4°5, 
diam. min. 4 mm. 
Aperture: alt. 4°25, diam. 

2mm. 
Hab. — Ennur backwater, 
Madras (Type); Canal near 
Fic. 2.—Nassa orvissaensis var. ennuy- Chinerighatta outskirts of 
5 stts b) S 
ensis, var. Nn. X 3. . 3 . . 
eee ae A Seine. Calcutta (a single specimen 
x 6. only). 
Alectrion unicolorata, Kiener. 
Monog. Buccinum, p. 60, pl. xix, fig. 69. 
Cochin backwater, near Ernakulam ; a single young specimen 
(f°. H. Gravely). 
Nassodonta insignis, H. Ad. 
Proc. Zool. Soc. London, 1866, p. 445. 
Cochin backwater, near Ernakulam (FP. H. Gravely). 
In the Proc. Malac. Soc. London, vol. I, 1895, pp. 257-258, 
Mr. Edgar A. Smith doubted the validity of the genus Nassodvnta, 
this view however the author is unable to accept, hence its rein- 
statement in the present paper. 
! Rec. Ind. Mus. X, p. 299. 
