269 



cula, vix nitida, intus extusque alba aut albida ; conceiitrice stri- 

 ata, striis postice elevatioribus, antice a lineis radiantibus dis- 

 tinctis decussatis ; margine veutrali subarcuato ; dorsali utrinque 

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

 tate antica rotundata ; latere postico angulato ; flexura costaque 

 umbonab satis distinctis ; bgamento magno, infosso ; dentibus 

 lateralibus distinctis, remotis, validis, suba?quidistantibus. 



Obovate-subtriangular, sohd, subequilateral, moderately convex, 

 scarcely glossy, white or whitish, anteriorly decussated by closely 

 radiating and concentric stria?., 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 white; lateral teeth 

 strong, subequidistant. 



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



86. Tellina perplexa (pi. lx. f. 139.) Hartley, Zool. Proc. 

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



T. testa T. ostracea affmis, ovata autem, striisque ejus concen- 

 tricis confertioribus, et superne baud lamellosis ; margine dorsali 

 antico paululum declivi. 



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

 centric strise more crowded and not lamellar, except near the 

 less arcuated ventral margin ; the anterior dorsal edge but little 

 sloping. 



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



87. Tellina ostracea (pi. lvii. f. 45.) Lam. no. 54; Hani. 

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



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

 intusque albida, bneis elevatis subremotis conceiitrice ornata; in- 

 ter stitiis he vibus ; margine veutrali subarcuato; dor sab utrinque 

 declivi, antice convexo, postice recto aut subretuso; extremitate 

 antica rotundata ; latere postico paulo breviore cuneiformi ; natibus 

 acutis, prominentibus ; ligamento infosso ; costa, umbonab promi- 

 nente ; dentibus lateralibus, distinctis, postico subremoto. 



Obovate-subtriangular, tolerably strong and convex, uniform 

 white, with regular raised rather distant concentric stria?, 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- 



s 



