236 



sima, sublsevigata, rosea, radio pallidiore postico plerumque notata ; 

 margine ventrali antice arcuato, postice flexuoso et sursum accli- 

 nato ; dorsali utrinque vix minime declivi, prope nates aeutas 

 subretusOj deinde subrecto aut paulidum convexiusculo ; latere an- 

 tico longiore, ad extremitatem rotundato ; postico angusto, acumi- 

 nata, rostrato ; ligamento infosso ; flexura costaque umbonali con- 

 spicuis ; dentibus lateralibus parvis, tenuibus, sequidistantibus. 

 Yar. Flavo-aurantia. 



Much elongated, compressed, thin, subpellucid, polished, rose- 

 coloured, with usually a paler posterior ray, nearly smooth, or with 

 minute radiating and concentric stria? ; ventral edge arcuated in 

 front, flexuous and greatly elevated behind; dorsal edge scarcely 

 at all sloping in front, rather more so posteriorly, subretuse near 

 the acute beaks, and then straightish or very slightly convex ; an- 

 terior side the longer, rounded at its extremity; posterior side 

 forming a narrow acuminated beak ; ligament sunken ; fold and 

 flexure conspicuous ; lateral teeth thin, small, and equidistant. 



Yar. Eich yellow. 



Yellow var. Isle of Zebu. 



As this is not the Bostrata of Linnseus, I have adopted the other 

 name proposed by Chemnitz " Bostrata seu Vulsella". 



28. Tellina pekna (pi. lxiii. f. 202, 217, 219.) Spengler, 

 Schrivt. Naturhis. Gelstav. Kiobenha. 4. (1798).- T. pallescens 

 Dil. Des. Cat. p. 84. T. sulphurea and latirostra Lam. no. 10, 

 11. Hani. Des. Cat. p. 62. T. incarnata Bom p. 36. t. 2. f. 12. (er- 

 roneously quoted as 11 in text). T. rostrata flavescens Chem. 

 vol. vi. f. 104. T. latirostra, Swain. Zool. 111. 2nd ser. vol. i. t. 20. 



T. testa oblongo-elongata, tenuiuscula, convexa, subpellucida, 

 nitida, sublsevigata, alba, flava, aurantia aut rosea, radio pallidiore 

 postico plerumque ornata ; margine ventrab antice arcuato, postice 

 sursum declivi; dorsali antice vix declivi, convexiusculo, postice 

 paululuni declivi, prope nates conspicuas subincurvato, mox con- 

 vexiusculo ; latere antico longiore, subproducto ; postico rostrato ; 

 extremitate postica obtuse angulata ; umbonibus subtumidis ; liga- 

 mento infosso; margine cardinalis interno, angusto, callo liga- 

 mentali munito ; dentibus laterabbus tenuibus, inconspicuis, sequi- 

 distantibus. 



Elongated-oblong, rather thin, semitransparent, convex, glossy, 

 very variable in colouring, being sulphur-yellow, white, pink with 

 or without paler rays, orange with white rays, or orange flesh-co- 

 loured, &c, nearly smooth, often with obsolete radiating striulse, 

 which are more evident posteriorly ; ventral edge arcuated in front, 



