294 



Closely allied to Timorensis, but clill'ers in sliape^ i>iniiosity, aiul 

 the decided inequality of its sides. The anterior oblique strise, 

 which in some specimens extend along the ventral edge posterior- 

 ward_, are rarely present in that species, 



Tranquebar; Sumatra. 



138. Tellin A TRIANGULARIS (pl.lx. f. 1 50.) CIiemnitz,yo\.\\. 

 p. 96. f. 85 ; Dillwyn, D. Cat. p. 79 ; Desh.ed.Lam. voLvi. p. 209 ; 

 Tellinides triangularis, Ilaid.'Des. Cat. p. 74. t. 4. f.33; TeUinides 

 politus Sop;., Tanker. Cat. App. p. 4 ; T. trilatera, Gmel.; T. ob- 

 liqua. Lam. no. 47. 



T. testa ovato-trigona, insequilaterali, solidiuscula, compressa, 

 nitidissima, sub epidermide flavescente-candida, antice et prope 

 marginem ventralem convexum concentrice striata, alteraque in 

 valvula striis flexuosis obliquis postice ornata; margine dorsali 

 antice brevi et arcuato, postice subrecto et producto ; extreinitate 

 postica obtuse acuminata; antica rotundata; ligamento promi- 

 nente ; flexura nulla ; dente laterali approximatissimo. 



Ovate-triangular, tolerably solid, comjn-essed, inequilateral, both 

 internally and externally white, the epidermis yellowish and very 

 glossy ; with concentric strife in front, and towards the convex 

 ventral margin which rises a little behind ; anterior side rounded, 

 its dorsal edge convex ; posterior side produced and obtusely acu- 

 minated, the dorsal edge nearly straight and very oblique ; liga- 

 ment prominent ; flexure obsolete ; the lateral tooth C|uite close to 

 the beaks. 



Moluccas? Mus. Cuming, &c. 



139. Tellina (Tellinides) acuminata (pl.lx. f. 141.) Han- 

 ley, Des. Cat. p. 73. sup. t. 13. f. 53. 



T. testa elongata, subovata, solidiuscula, valde insequilaterali et 

 inaequivalvi, compressa, poHta, Isevigata, extus intusque albida aut 

 albido-aurantia ; margine ventrali subarcuato ; dorsali antice sub- 

 arcuato satiscjue declivi, postice elongato subrecto et declivi ; latere 

 antico breviore, rotundato ; postico valde producto, acuminato, ad 

 extreinitatera rotundato ; ligamento infosso ; flexura costaque mu- 

 bonali obsoletis ; dente laterali approximato. 



Elongated, subovate, moderately strong, very inequilateral and 

 inequivalve, both valves compressed, but one much shallower than 

 the other ; smooth, polished, both within and without of a pale 

 orange becoming white towards the. subarcuated ventral edge; 

 anterior side the shorter, rounded, its dorsal edge arched and 

 moderately sloping; posterior side much produced, acuminated. 



