232 



Ovate-oblong, slightly compressed, thin, subpellucid, glossy, 

 pink or rosy orange, with narrow deeper-coloured rays, crowded 

 with minute concentric strife which become more distinct and ele- 

 vated posteriorly ; ventral margin slightly convex ; anterior side the 

 longer, obtusely rounded at its extremity, its dorsal edge scarcely 

 at all declining ; posterior extremity wedge-shaped, the ligamental 

 edge nearly straight ; ligament small but not sunken ; fold and 

 flexure not conspicuous ; lateral teeth distinct, posterior the more 

 distant. 



Mediterranean. 



20. Tellina donacina (pi. lvi. f. 12. and pi. lxvi. f. 259.) 

 Liu., Sys. 1118 ; Lin. Trans, vol. viii. t. 1. f. 1. ; Mont. Test. Brit, 

 t. 27. f. 3 ; Turt, Biv. Brit. p. 103. t. 8. f. 4 ; Wood, Gen. Cone, 

 t. 45. f. 5 ; Philip, En. Hoi. Sic. vol. i. p. 24; Lam. no. 27 ; Hani. 

 Des. Cat. p. 64. t. 4. f. 31. T. variegate Pali, vol. i. 1. 15. f. 10. 

 T. Llantivyi, Pai/r. Cat. Cors. p. 40. t. 1. f. 13, 14. 



T. testa oblonga, solidiuscula, subconvexa, impolita, albido-flaves- 

 cente, radiis roseo-rubris angustis interrupte ornata, striisque sub- 

 imbricatis concentrice sulcata; margine ventrali convexiusculo, et 

 antice arcuato ; margine dorsab roseo, antice minime postice subito, 

 dechvi ; latere antico latitudinem postici duplo superante ; extre- 

 mitate antica rotundata, postica obtusissime cuneiformi ; natibus 

 radio brevi recto roseo strigatis ; superficie interna flavescente, prope 

 nates roseo-tincta ; dentibus lateralibus validis, subsequidistaiitibus. 



Var. Penitus Candida. 



Oblong, rather solid, moderately convex, rather dull, pale yellow, 

 with crimson interrupted narrow rays, and concentric subimbri- 

 cated strife ; ventral edge moderately convex, sweUing out anteriorly ; 

 dorsal edge rosy ; beaks with a short direct rosy streak ; anterior 

 side thrice as long as the posterior, its extremity rounded, its dorsal 

 edge nearly horizontal ; posterior side very short, most obtusely 

 cuneiform, inside tinged with yellow, becoming pink near the beaks, 

 teeth strong, subequidistant. 



Var. Perfectly white. 



Britain, Europe. 



21. Tellina tulipa (pi. lvi. f. 25.) Hanley, Zool. Proc. 1844. 



T. testa ovali-oblonga, solida, subinsequilaterali ,compressa, niti- 

 diuscula, lineis elevatis concentrice et confertim striata ; albida aut 

 albido-rosea, radiis roseis multis angustis subinterrupte ornata ; 

 margine ventrali medio retuso ; dorsali utrinque subrecto, antice 

 vix paululum declivi, postice satis declivi ; latere antico paulo Ion- 



