294 



Closely allied to Timorensis, but differs in shape, sinuosity, and 

 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. Tellina triangularis (pl.lx. f.150.) Chemnitz, vol.vi. 

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

 Tellinides triangularis, Hani. Des. Cat. p. 74. t. 4. f. 33 ; Tellinides 

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

 liqua, Lam. no. 47. 



T. testa, ovato-trigona, inaequilaterali, 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 ; extremitate 

 postica obtuse acuminata; antica rotundata; ligamento promi- 

 nente ; flexura, nulla ; dente laterali approximatissimo. 



Ovate-triangular, tolerably solid, compressed, inequilateral, both 

 internally and externally white, the epidermis yellowish and very 

 glossy ; with concentric strise 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 quite 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 

 inasquivalvi, compressa, polita, laevigata, extus intusque albida aut 

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

 arcuato satisque declivi, postice elongato subrecto et declivi ; latere 

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

 extremitatem rotundato ; ligamento infosso ; flexura costaque um- 

 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, 



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