232 



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

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

 with minute concentric striae 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 aU declining ; posterior extremity wedge-shaped, the hgamental 

 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. Ivi. f. ] 2. and pi. Ixvi. f. 259.) 

 Lm., 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 ; Pliihp, En. Mol. Sic. vol. i. p. 24; Lam. no. 27 ; Hani. 

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

 T. Llantivyi, Pa>/r. Cat. Cors. p. 40. 1. 1. f. 13, 14. 



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

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

 imbricatis concentrice sulcata; margine ventrali convexiusculo, et 

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

 decHvi ; latere antico latitudinem postici duplo superante ; extre- 

 mitate antica rotmidata, postica obtusissime cuneiformi ; natibus 

 radio brevi recto roseo strigatis ; superficie interna ilavescente, prope 

 nates roseo-tincta ; dentibus lateralibus validis, subsequidistantibus. 



Var. Penitus Candida. 



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

 with crimson interrupted narrow rays, and concentric subimbri- 

 cated striae ; ventral edge moderately convex, swelling out anteriorly ; 

 dorsal edge rosy ; beaks with a short dii-ect rosy streak ; anterior 

 side tlirice 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 wliite. 



Britain, Europe. 



21. Tellina tulipa (pi. Ivi. f. 25.) Eanley, Zool. Proc. 1844. 



T. testa ovali-oblonga, soHda, 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 utrincfue subrecto, antice 

 vix paululum decHvi, postice satis dechvi ; latere antico paulo Ion- 



