292 



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

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

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

 not greatly sloping behind ; anterior extremity rounded ; posterior 

 lanceolate; ligament tolerably prominent; fold conspicuous; an 

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

 approximate. 



Isle of Negros, Phihppines (Cuming). 



134. Tellina hyalina (pi. lxi. f. 167.) Gmelin, 3235 ; 

 Dillw. 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- 

 requdaterali, nitida, albida, subpcllucida, laevigata ; margine ven- 

 trali convexo et postice acclivi; dorsali postice subrecto vixque 

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

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

 ligamento infosso ; flexura obsoleta ; costellis duabus internis pos- 

 tice radiantibus ; 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 slightly 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 ; ligament sunken ; beaks not prominent ; fold obsolete ; 

 two internal rib-like hnes radiating from the hinge posteriorwards ; 

 the lateral tooth almost touching the primary ones. 



The only 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 (pi. lxi. f. 15 8, 172) 

 Lamarck, Anim. sans vert. vol. v. 



T. testa oblonga, tenuiuscula, subsequilaterali, compressiuscula, 

 nitida, subpellucida, extus intusque Candida (nonnunquam margi- 

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

 tice attenuata et superne obtuse angulata; margine ventrali sub- 

 recto; dorsali utrinque subrecto et subdecb'vi, antice paululum 

 convexiusculo, postice subretuso ; flexura costaque umbonali obso- 

 letis ; ligamento magno, prominente ; dente laterali, approximato. 



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

 rather compressed, both within and without of a glossy white 



