I9I4-] H. B. Preston : Mollusca from the Chilka Lake. 309 



projection which is almost contracted into two unequal, inwardly 

 projecting portions; cardinal teeth in left valve consisting of a 

 narrow, V-shaped, bifid anterior and a very oblique, but straight 

 posterior tooth, while the marginal projection is quite lacking ; 

 palleal line simple ; interior of shell suffused with pinkish red. 



Long. 3, lat. 3*5 (nearly) mm. 



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



Family SOLENIDAE. 

 Solen truncatus, Wood. 



Sowerby, Genera of Shells; Reeve, Con. Icon., Solen, 

 pi. i, fig. I, vol. xix, 1874. 



From muddy bottom in 6 to 8 feet, about two miles off Balu- 

 gaon, Orissa; Rambha Bay, south end of Lake Chilka, Ganjam 

 District; between Barnakuda and Nalbano Isd., in 10 feet; off 

 Samal Island, Ganjam District, in from 8 to 15 feet, all very 

 3^oung, but in various stages of growth. 



Sub-Order ADESMACEA. 



Family PHOLADIDAE. 



Martesia striata, Lin., var. 



Linnaeus, Syst. Nat. ; Reeve, Con. Icon., Pholas, pi. viii, 

 figs. 32a, b, c, vol. xviii, 1873. 

 Lake Chilka {ex coll. Raban). 



Sub-Order TELLINACEA. 



Family TELLINIDAE. 



TcIIina confusa, sp. n. 



(Figs. 18, i8«, p. 305). 



Shell small, cuneiform, whitish, polished, shining, both valves 

 sculptured with fine, regular, concentric striae; umbones small, 

 posteriorly situate ; dorsal margin anteriorly sloping, posteriorly 

 very oblique ; ventral margin scarcely rounded ; anterior side pro- 

 duced, obtusely rounded ; posterior side truncately rostrate. 



Long. 4'25, lat. 675 mm. 



Hab. — Lake Chilka [Coll. Ind. Mus.). 



The species has been confounded in the Indian Museum with 

 7 . aequistriata, Sow.^ of which the original locality is unknown ; as, 

 however, the figures of that species are clearly of a much broader 

 and more ovate form, the author considers himself fully justified 

 in describing the present shell as new. 



1 Reeve, Con. Icon. Telli)ia, pi. xlv, figs. 265(7, h, vol. xvii, 1870. 



