310 



Ovate, moderately strong, convex, rather glossy, dee]) rose-colour, 

 substriated in front and towards the lower margin ; ventral edge 

 arcuated ; dorsal but slightly sloping on either side, convex in front, 

 straight or subretuse behind ; fold and flexure perceptible ; ante- 

 rior side slightly the longer, rounded ; posterior subacuminated, 

 and somewhat beaked ; ligament sunken. 



Hab. ? (Mus. Cuming!, Metcalfe.) 



173. Tellina scalpellum (pi. lix. f. 116.) Hartley, Zool. 

 Proc. 1844. 



T. testa oblonga, tenuissima, compressa, nitidissima, valde in- 

 a^quilaterah, saturatius rosea, pellucida, sublfcvigata ; margine ven- 

 trali recto aut subrecto; dorsali antico paululum declivi, subrecto; 

 latere postico brevi, obtuse subcuneiformi ; extremitate lateris an- 

 tici longioris, rotundata ; hgamento parvo, prominulo ; flexura 

 obsoleta. 



Oblong, very thin and pellucid, very inequilateral compressed, 

 nearly smooth or concentrically substriated, of a very glossy deep 

 rose-colour ; ventral edge more or less straight ; front side pro- 

 duced, rounded at its extremity^, its dorsal edge nearly straight and 

 very little sloping ; hinder side obtusely wedge-shaped ; ligament 

 small and prominent ; flexure ahnost entirely obsolete. 



Isle of Zebu. 



174. Tellina undulata (pi. lix. f. 107.) Hartley, Zool. Proc. 

 1844. 



T. testa oblonga, tenuissima., compressa, impolita et valde in- 

 gequilaterali, intus extusque albida, suboblique et concentrice undu- 

 lata ; margine ventrali convexo ; dorsali antice subrecto et vix decli- 

 vi, postice incurvato satisque declivi; latere postico brevi, attenuato, 

 rostrato, ad extremitatem biangulato; flexura costaque uinbonali 

 distinctis ; natibus acutis ; bgamento infosso. 



Oblong, very tliin, compressed, very inequilateral, whitish both 

 within and without, not glossy, with oblique undulations which be- 

 come concentric near the short attenuated and beaked posterior ex- 

 tremity, of which the tip is acute and biangulated ; ventral edge con- 

 vex ; dorsal anteriorly straightish and scarcely sloping, posteriorly 

 incurved and moderately sloping; anterior side produced, its extre- 

 mity obtusely rounded; fold and flexure perceptible; ligament 

 sunken ; beaks acute. 



St. Elena, West Columbia. 



175. Tellina cygnus (pi. lix. f. 122.) Hanley, Zool. Proc. 

 1S44. 



