292 



rose-coloured or white with a rosy tinge ; concentrically striated^, 

 the strige extremely close ; ventral edge nearly straight ; dorsal but 

 moderately convex on either side, nearly horizontal in front, and 

 not greatly slof)ing behind ; anterior extremity rounded ; posterior 

 lanceolate; ligament tolerably prominent; fold conspicuous; an 

 intenial posterior radiating riblet ; the lateral tooth distinct, sub- 

 approximate. 



Isle of Negros, Pliilippines (Cuming). 



134. Tellina hyalina (pi. Ixi. f. 167.) Gmel'm, 3235; 

 DiUw. Des. Cat. p. 85 ; Hani. Des. Cat. p. 67. t. 4. f. 39 ; T. com- 

 planata pellucida, Chem. vol. vi. f. 99. 



T. testa oblonga, insequivalvi, tenuissima, compressa, valde in- 

 sequilaterali, nitida, albida, subpellucida, Ifevigata ; margine ven- 

 trah convexo et postice acclivi; dorsali postice subrecto vixque 

 declivi, antice arcuato et declivi; latere antico perbrevi, rotun- 

 dato ; postico producto, rotundato, attenuato ; natibus inconspicuis; 

 ligamento infosso ; fiexura obsoleta ; costellis duabus internis pos- 

 tice rachantibus ; dente laterali quamplurimum approximato. 



Oblong, inequivalve, very thin, much compressed, very inequi- 

 lateral, of a brilliant smooth semi-transparent white ; the ventral 

 margin convex and rising behind ; the hinder area of the dorsal 

 edge, which is but sbghtly convex and not greatly sloping poste- 

 riorly, and sloping and arcuated anteriorly, flattened ; anterior side 

 short and rounded; posterior side produced, rounded, and at- 

 tenuated ; hgament sunken ; beaks not prominent ; fold obsolete ; 

 two internal rib-Hke lines radiating from the hinge posteriorwards ; 

 the lateral tooth almost toucliing the primary ones. 



The oidy perfect specimen I have ever beheld of this extremely 

 rare shell, belongs to Dr. Bates, who most courteously forwarded 

 it from the United States, for my inspection. 



135. Tellina (Tellinides) Timokensis (pLki. f.l58, 172) 

 Lamarck, Anun. sans vert. vol. v. =; f^^^uvvs^O-isX j^C^^v , 



T. testa oblonga, tenuiuscula, subsequilaterah, compressiuscula, 

 nitida, subpellucida, extus intusque Candida (nonnuiiquam margi- 

 nibus roseo tinctis) concentrice substriata, antice rotundata, pos- 

 tice attenuata et superne obtuse angulata; margine ventrali sub- 

 recto; dorsali utrinque subrecto et subdcchvi, antice paululum 

 convexiusculo, postice subretuso ; flexiu'a costaque imibonali obso- 

 Ictis ; bgamcnto magno, prominente ; dcnte laterali, approximato. 



Oblong, rather thin and semi-transparent, nearly equilateral, 

 rather compressed, both witliin and without of a glossy white 



