269 



cula^ vix iiitidf^ intus extusque alba aut albida; concentrice stri- 

 ata, striis postice elevatioribus, autice a b'ncis radiantibus clis- 

 tiuctis decussatis ; margine veutrali subarciiato ; dorsali utrinque 

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

 tate aiitica rotiuidata ; latere postico angulato ; tlexura costuque 

 umbonali satis distinctis ; ligamento maguo, infosso ; deutibus 

 lateralibus distinctis, remotis, validis, siibsequidistantibus, 



Obovate-subtriangular, solid, subeqiiilateral, moderately convex, 

 scarcely glossy, white or whitish, anteriorly decussated by closely 

 radiating and concentric strife, 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. Tellina perplexa (pi. Ix. f. 139.) Hanley, Zool. Proc. 

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



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

 tricis confertioribus, et superne hand 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 but Httle 

 sloping. 



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



87. Tellina ostracea (pi. Ivii. 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, soKdiuscula, satis convexa, extus 

 intusque albida, Hneis elevatis subremotis concentrice ornata; in- 

 terstitiis laevibus ; margine ventrali subarcuato ; dorsaK utrinque 

 decHvi, antice convexo, postice recto aut subretuso; extremitate 

 antica rotuudata ; latere postico paulo breviore cimeiformi ; natibus 

 acutis, prominentibus ; Hgamento infosso ; costa umbonaK promi- 

 nente ; dentibus lateralibus, distinctis, postico subremoto. 



Obovate-subtriangular, tolerably strong and convex, uniform 

 white, with regular 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- 



