327 



rounded at its extremity, its dorsul edge scarcely at all slopiug and 

 moderately convex ; posterior extremity obtuse, the hinder dorsal 



edge moderately sloping and nccU-ly straight ; ligament ? ; 



umbonal ridge obsolete ; inside vvliite. 

 China (Mus. Brit.). 



205. Tellina frigida (pi. lix. f. 119.) Hanley, Zool. Proc. 

 1844. 



T. testa ovali, solidiuscula, convexa, insequilaterali, nitidu, al- 

 bida (intus Candida), laevigata, utrinque rotundata; margiue ven- 

 trali convexo ; dorsali antico subdeclivi, convexo ; latere postico 

 plane breviore ; natibus inconspicuis ; flexura costaque umbonali 

 obsoletis ; deutibus minimis. 



Oval, tolerably strong, convex, inequilateral, glossy, whitish, 

 smooth, rounded at each extremity ; ventral edge convex ; front 

 dorsal convex and moderately sloping; posterior side decidedly 

 the shorter; beaks not prominent; fold and flexure obsolete; 

 teeth minute ; inside wliite. 



Kamskatclika. 



206. Tellina gkandis (pi. Ixv. f. 247.) Kanley, Zool. Proc. 

 1844.^. / fV , 



T. testa ovali, subtrigona, solida, subinsequivalvi, Isevi, convcxa, 

 subimpolita, extus intusque albida, antice rotundata; margine 

 ventrali convexiusculo ; dorsali utrinque declivi, postice recto aut 

 subrecto, antice vix convexiusculo ; extremitate lateris antici brc- 

 vioris obtusa ; flexui'a costaque umbonali subobsoletis ; hgamento 

 magno 



Subtriangularly oval, solid, slightly incquivalve, convex, smooth, 

 ratlier of a duU wliite under an almost imperceptible epidermis, 

 wliich is only visible near the but little convex ventral margin ; 

 anterior side clearly the longer, its extremity rounded, its dorsal 

 edge but little convex and moderately sloping, ligamental edge 

 straight, and strongly sloping ; posterior termination obtuse ; fold 

 and flexure almost entirely obsolete ; inside wliite, the liinge-plate 

 strong, the teeth of a moderate size. 



Tumbez, Peru. 



207. Tellina secta (pi. Ixv. f. 245, 248.) Conrad, Jour. Ac. 

 N. S. Pliilad. vol. vii. p. 257. HanL Des. Cat. p. 67. 



T. testa solidiuscula, inrequivahi, nitida, extus intusque Can- 

 dida, Isexagata; altera valvula convexa, altera complanata; mar- 

 gine ventrali subarcuato ; dorsali utrinque hand midtum declivi, 



2 B 2 



