2G9 



cula, vix nitid^, intus cxtusque alba aut albida; concentrice stri- 

 ata, striis posticc elevatioribus, antice a lineis racliantibus dis- 

 tinctis deciissatis ; margine vciitrali subnrcuato ; dorsaK utrinque 

 valde declivi, antice convexo, postice recto aut subrecto ; extrenii- 

 tate antica rotimdata ; latere postico angulato ; tlexura costacpe 

 umbonali satis distinctis ; ligainento magno, infosso ; dentibus 

 lateralibus distinctis, remotis, validis, subfequidistantibus. 



Obovate-subtriangular, solid, sub equilateral, moderately convex, 

 scarcely glossy, white or whitish, anteriorly decussated by closely 

 radiating and concentric strise, posteriorly with the concentric 

 striae more distant and more elevated ; ventral edge subarcuated ; 

 dorsal slopes strong, the posterior nearly straight and roughened 

 by the edges of the concentric sulci; posterior tip angulated; 

 beaks acute; anterior extremity rounded; ligament sunken, and 

 large; fold and flexure moderate; inside wliite; lateral teeth 

 strong, subequidistant. 



Jimaimalan, Isle of Negros, &c.; (Cuming). 



86. Tellixa perplexa (pi. Ix. f. 139.) Hanleij, Zool. Proc. 

 1844; T. concinna, (?) Ab. imd Bes. Conch, part 5. t. 5. f. 1. 



T. testa T. ostracece affinis, ovata autem, striisque ejus concen- 

 tricis confertioribus, et superne haud lamellosis ; margine dorsali 

 antico paululum declivi. 



Very like T. ostracea but subovate and not triangular ; the con- 

 centric striae more crowded and not lamellar, except near the 

 less arcuated ventral margin ; the anterior dorsal edge l)ut little 

 sloping. 



Bay of Manila and Isle of Annaa ; (Cuming) . 



87. Tellina ostuacea (pi. Ivii. f. 45.) Lam. no. 54; Hard. 

 Des. Cat. p. 71. sup. 1. 14. f. 11 ; Enc. Meth. t. 290. f. 13. 



T. testa obovato-subtrigona, solidiuscula, satis convexa, extus 

 intusque albida, lineis elevatis subremotis concentrice ornata; in- 

 terstitiis l8e\ibus ; margine ventrali subarcuato ; dorsali utrinque 

 decHvi, antice convexo, postice recto aut subretuso; extremitate 

 antica rotundata ; latere postico paulo breviore cuneiformi ; natibus 

 acutis, prominentibus ; ligamento infosso ; costa umbonali promi- 

 nente ; dentibus lateralibus, distinctis, postico subremoto. 



Obovate-subtriangidar, tolerably strong and convex, uniform 

 white, with regidar raised rather distant concentric striae, the inter- 

 stices smooth ; ventral edge arcuated, sloping upward posteriorly ; 

 anterior side rather the longer, its dorsal edge convex and sloping, 

 its extremity rounded; posterior side subrostrated and wedge- 



