XIX. M O Iv L U S C A FROM THE C H I I. K A 

 LAKE ON THE EAST COAST OF INDIA. 



By H. B. Preston, F.Z.S. 



[The shells here described were collected, unless it is otherwise 

 stated, by Mr. Kemp and myself in 1913. The types of the 

 new species (except that of Nassa denegabilis) are in the col- 

 lection of the Indian Museum. — N. A.] 



Class GASTROPODA. 

 Order PMOSOBBAJVCHIA. 



Family TEREBRIDAE. 



Terebra rambhaensis, sp. n. 



(Figs. 5, 5«> P- 298). 



Shell small, subulate, shining, pale reddish brown ornamented 

 with a whitish spiral band; remaining whorls 7, flat, regularly 

 increasing, sculptured with coarse, rounded, rather closely-set, 

 very slightly oblique costulae which bulge considerably in their 

 subsutural and lower parts ; suture impressed ; base of shell 

 without plication and smooth but for growth striae ; columella 

 margin obliquely descending, callously thickened and inwardly 

 bulging above ; labrum simple ; aperture broadly inversely auri- 

 form. 



Alt. 4, diam. maj. i"25 mm. 



Hab. — Rambha Ba}-, south end of Lake Chilka, Ganjam 

 District, Madras. 



Family NASSIDAE. 



Nassa sistroidea, G. and H. Nevill. 



J. Asi. Soc. Bengal, vol. xliii, pt. 2, pi. i, fig. 6. 

 Channel between Satpara and Manikpatna. 



Nassa labecula, A. Ads. 



Proc. Zool. Soc, London, 1851, p. 98. 

 Channel between Satpara and Manikpatna. 



Nassa denegabilis, sp. n, 



(Fig 9: P- 301). 

 Shell fusiform, pale greenish 3^ellow painted with a subsutural 

 and broad basal band of pinkish red ; whorls 7, regularly increas- 



