I9I4-1 H. B. Preston : Mollusca from the Chilka Lake. 303 



waved and angled above by the terminations of the spiral Hrae ; 

 aperture subquadrate. 



Alt. 2, diam. maj. 3, diam. min. 2*5 mm. 



Aperture : alt. i diam. i mm. 



Hab. — Satpara, I^ake Chilka, Orissa, at a depth of from 4 to 

 6 feet, close in shore. 



Class OPISTHOBRANCHIA. 



Family BULLIDAE. 



Bulla (Haminea) crocata. Pease. 



Proc. Zool. Soc., London, i860, p. 19. 

 Satpara, Orissa, found dead on shore. 



Family TORNATINIDAE. 



Tornatina estriata, sp. n. 



(Figs. 7, ya, p. 301). 



Shell ovately cylindrical with moderately exserted spire, white, 

 semitransparent ; whorls 4, smooth polished, without sculpture, 

 showing only indistinct growth markings ; suture narrowly chan- 

 nelled, the channel overhung by the upper portion of the whorl 

 below ; columella margin descending obliquely, scarcely curved, 

 somewhat twisted above where it enters the shell ; labrum acute, 

 very slightly constricted and bent inwards over the aperture in 

 the median part, a little dilated below, obtusely angled above, 

 aperture straight and somewhat narrow above, commencing to 

 widen in the median region and considerably open below. 



Alt. 3*75, diam. maj. i"5 mm. 



Hab. — Lake Chilka, Orissa, on muddy bottom at a depth of 

 from 6 to 8 feet, about two miles off Balugaon(Type) ; Manikpatna, 

 Orissa in 4 feet. 



Tornatina sorer, sp. n. 



(Figs. 8, 8a, p. 301). 



Shell differing from T. estriata, Preston, in its larger size and 

 less ovately cylindrical form which, in the present species, is more 

 shouldered above and slightly tapering towards the base ; the 

 columella margin does not descend as obliquely as in that species, 

 but bulges somewhat inwardly above, is excavated and curved in 

 the median region and descends slightly obliquely below in the 

 opposite direction to that in T. estriata. 



Alt. 4'75, diam. maj. 2 mm. 



Hab. — Manikpatna, Lake Chilka, Orissa, at a depth of 4 feet. 



