231 



T. rostrata, Born. t. 2. f. 10 ; Poli. Tes. Sic. vol. xv. f. 8 ; T. virgata, 

 var. Chem. vol. vi. p. 72. 



T. testa oblonga, angusta, tenui, compressa, nitida, radiis roseis 

 vel roseo-aurantiis et albidis vel flavidis eleganter ornata, striis con- 

 fertis exilibus concentrice sulcata ; margine ventrali subrecto ; latere 

 antico producto, rotundato ; postico breviore, valde attenuate, sub- 

 rostrato ; margine dorsali antice paululum declivi, postice valde de- 

 clivi, convexo, intusque roseo ; natibus albidis ; superficie interna, 

 albido-rosea ; dentibus lateralibus vabdis, antico subapproximato. 



Var. testa omnino rosea. 



Elongated-oblong, very thin, compressed, glossy, rayed with rose- 

 colour and white, the former often passing into orange, the latter 

 tinged usually with yellow ; more rarely of an uniform rose-colour, 

 except the tips of the beaks which are always pale or whitish ; most 

 delicately but regularly and closely striated concentrically ; ventral 

 edge nearly straight ; anterior side produced, its slope very gentle, 

 its extremity rounded ; posterior side shorter, much attenuated, sub- 

 rostrated, the dorsal slope great but convex ; inside pink, ligamen- 

 tal edge rosy ; lateral teeth strong, anterior one subapproximate. 



Mediterranean. 



18. Tellina virgulata (pi. lvi. f. 5.) Hanley, Zool. Proc. 

 1844. 



T. testa. Donachm simillima, sed paululum angustiore, striisque 

 exilioribus ornata ; extus intusque albida, roseo-radiata ; radiis latis, 

 baud interruptis ; margine dorsaU antice albido. 



Extremely like Donacina, but the shape is slightly narrower, the 

 strise more delicate, and the colouring consists of a few interrupted 

 rose-coloured rays upon a white ground ; the interior dorsal edge 

 is white. 



Mus. Cuming. 



19. Tellina distokta (pi. lvi. f. 6.) Poli, Test. Sic. vol. i. 

 1. 15. f. 11 j Philip. Mol. Sic. vol. i. p. 25. 



T. testa ovato-oblonga, compressiuscula, tenui, nitida, subpellu- 

 cida, pallide rosea aut aurantio-rosea, radiis saturatioribus plerum- 

 que picta ; concentrice striata, striis minimis et postice elevatis ; mar- 

 gine ventrali convexiusculo; dorsali utrinque subrecto, antice minime 

 declivi ; latere antico longiore, ad extremitatem obtuse rotundato ; 

 extremitate postica cuneiformi, paululum subrostrata ; flexura cos- 

 taque umbonali subinconspicuis ; Ugamento parvo, satis promi- 

 nente; dentibus lateralibus distinctis, postico subremoto. 



