480 Records of the Indian Museum. [VoL. XI, 
Family TIARIDAE. 
Tiara (Striatella) tuberculata (Miller). 
Hist. Verm. 1774 (as Nertta). 
Canal near Chingrighatta, outskirts of Calcutta (a small 
form), 
Tiara (Tarebia) lineata (Gray). 
Wood., Jndex Test. Supp., 1828, fig. 68 (as Helix). 
Canal near Chingrighatta, outskirts of Calcutta. 
Family RISSOIDAE. 
Iravadia princeps, sp. n. 
Shell imperforate, elongately fusiform, in dead condition 
whitish; whorls 7, the first smooth, 
submammillary, the remainder 
sculptured with fine, acute, regular 
and slightly distant, spiral lirae, the 
interstices being occupied by very 
fine, transverse riblets; suture im- 
pressed; columella margin porcel- 
lanous, narrowly outwardly expan- 
ded and reflexed, continuous with 
the labrum which is varicosely 
Pe thickened, bevelled behind and 
rather markedly angled at each ter- 
mination of the spiral lirations, 
aperture a little oblique, rather broadly ovate. 
Alt. 6°5, diam. maj. 3, diam. min. 2°25 mm. 
Aperture: alt. 2, diam. 1°5 mm. 
Hab.—Canal near Chingrighatta, outskirts of Calcutta. 
~ 
Fic. 2.—Iravadia princeps, sp. 
x 
») 2a" | dow . sculpture; X as; 
Family ASSIMINEIDAE. 
Assiminea francesiae, Wood. 
Ind. Test. Supp., 1828 ; A. fasciata, Benson, Zool. ¥., 1835, p. 463. 
Canal near Chingrighatta, outskirts of Calcutta. 
Family NERITIDAE. 
Septaria crepidularia, Lamarck. 
Anim, s. vert., VI, 2, 1822. 
Canal near Chingrighatta, outskirts of Calcutta. 
Septaria depressa (Reeve). 
Con. Icon., Neritina, 1855, sp. 86, pl. xviii, figs. 86a, 0. 
Canal near Chingrighatta, outskirts of Calcutta. 
The above two species seem to the author to be very doubt- 
fully separable. 
