311 



T. testa ovata ant ovato-oblonga, solidiusciila, subajquilateruli^ 

 convcxa, uitida, Candida, concentricc snbstriata; margine ventral i 

 convexiusculo ; dorsali antice subrecto et paidulum declivi, postice 

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

 postico cnneiformi, subrostrato; flexnra ventrali distincta; bga- 

 mento infosso ; superficie interna Candida, submargaritacea. 



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

 glossy, white, concentrically substriated; ventral margin sKglitly 

 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, Pliilippines. 



176. Tellina ALA (pl.lx.f. 137, 146.)^a»%,Zool.Proc. 1844. 



T. testa ovata, soKdiuscula, subinsequivalvi, subsequilateraU, 

 uitida, couvexiuscula, extus intusque albida, radio brevi paUide 

 aurantio in adultis utrinque ornata, concentrice snbstriata ; margine 

 ventrali magis minusque convexo ; dorsali antice convexo etjsub- 

 declivi, postice declivi 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 laterali antico rudimentali, 

 instruct© . 



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

 quam rostrata ; flexura costaque umbonali subinconspicuis. 



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

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

 wliitish 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 retuse 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 aU beaked, the orange rays clearly visible ; fold and flexure 

 by no means conspicuous. 



Ceylon. 



177. Tellina nymphalis (pi. Ixii. f. 196.) Lam. no. 50; 

 Hani. Des. Cat. p. 70. 



z 2 



