311 



T. testa ovata ant ovato-oblongfi, solidiuscula, subaequilaterali, 

 convexa, nitida, Candida, concentrice substriata ; margine ventrali 

 convexiusculo ; dorsab antice subrecto et paululum declivi, postice 

 recto et valde declivi ; extremitate antica rotundato-obtusa, ; latere 

 postico cimeiformi, subrostrato ; flexura ventrali distincta ; liga- 

 mento infosso ; superficie interna Candida, submargaritacea. 



Ovate or ovate-oblong, tolerably firm, nearly equilateral, convex, 

 glossy, wbite, concentrically substriated; ventral margin slightly 

 convex ; dorsal nearly straight and very slightly sloping in front ; 

 quite straight and much sloping behind ; anterior end obtusely 

 rounded ; posterior side wedge-shaped, and subrostrated ; flexure 

 distinct ; ligament sunken ; outside white and somewhat pearly. 



Bias, Isle of Negros, Philippines. 



176. Tellina ALA(pl.lx. f.l37,146.)//a«%,Zool.Proc.l844. 



T. testa ovata, sobdiusctda, subina3quivalvi, subsequilaterah, 

 nitida, convexiuscula, extus intusque albida, radio brevi paUide 

 aurantio in adultis utrinque ornata, concentrice substriata ; margine 

 ventrali magis minusque convexoj dorsali antice convexo et'sub- 

 declivi, postice decbvi et prope nates subretuso ; latere antico 

 rotundato, longiore; postico angulato, subrostrato; flexura costa- 

 que [umbonali conspicuis ; ligamento infosso ; cardine dentibus 

 primariis parvis, et nonnunquam dente laterah antico rudimentali, 

 instructo. 



Var. ovato-trigona, solida, lsevi aut sublsevigata, convexa, nequa- 

 quam rostrata ; flexura costaque umbonali subinconspicuis. 



Ovate, tolerably solid, very slightly inequivalve, nearly eqiula- 

 teral, rather convex, of a silky gloss, concentrically substriated, 

 whitish within and without, with (in adult specimens) a short pale 

 orange streak radiating on either side from the beaks ; ventral edge 

 more or less convex ; anterior side rather the longer, rounded at its 

 extremity, its dorsal edge convex, and not greatly sloping ; poste- 

 rior side angulated and subrostrated, its dorsal edge refuse near 

 the beaks, and decidedly sloping; fold and flexure conspicuous; 

 ligament rather sunken ; primary teeth small, sometimes a rudi- 

 mentary anterior lateral one 



Yar. Ovate-triangular, solid, convex, nearly or quite smooth, 

 not at all beaked, the orange rays clearly visible ; fold and flexure 

 by no means conspicuous. 



Ceylon. 



177. Tellina nymphalis (pi. lxii. f. 196.) Lawt. no. 50; 

 Hani. Des. Cat. p. 70. 



z 2 



