318 



rasceute induta ; latere antico breviore ; postico liaud acuminato ; 

 ligamento permagiio ; natibus et umbouibus plerunique erosis. 



Very like Solidula, but the front side is the shorter one^ and the 

 posterior extremity is not at all acuminated. The surface is not 

 glossy, is usually eroded near the beaks, and covered with an ashy- 

 brown epidermis near the ventral margin, wliich is regularly sub- 

 arcuated. The ligament is very large and prominent. 



Arctic Ocean. 



188. Tellina PABRicn (pi. lix. f. 112.) llanley ; Venus fra- 

 gilis, Ot/io Fahr.y Paun. Groen. p. 413. 



T. testa suborbiculari, solida, sequilaterali, convexa aut subven- 

 tricosa, impolita, extus intusque albida, epidermide cinerascente 

 induta, concentrice subrugulosa ; margine ventrali magis minusve 

 arcuato; dorsali utrinque convexiusculo, antici subdeclivi, postice 

 declivi; latere antico rotundato; postico vix etiam obtusissime 

 subangulato; natibus erosis; ligamento permagno, prominente; 

 Hexura obsoleta ; dentibus minimis. 



Suborbicular, solid, equilateral, convex or subventricose, dull white, 

 covered by an ashy epidermis, concentrically wrinkled by the lines 

 of growth ; ventral margin more or less arcuated ; dorsal edges 

 moderately convex, rather sloping in front, decidedly so behind ; 

 anterior side rounded, posterior scarcely at all angulated; beaks 

 eroded ; ligament lai'ge, and prominent ; flexure obsolete ; teeth 

 very small. 



There being already a T. fragihs, I am compelled to alter the 

 orginal specific appellation of the shell. 



Northern Seas. 



189. Tellina solidula (pi. lix. f. 109, 110.) Pultney, Cat, 

 Dorset, p. 29 ; Mont. Test. Brit. p. 63 ; Maton, Lin. Tr. 8 ; Wood, 

 Gen. Con. 193. t. 46. f. 3; Lam. no. 51 ; Hani. Des. Cat. p. 70. 

 t. 4. f. 84 ; T. zonata, Billw. D. Cat. p. 100 ; Psammobia sohdula, 

 Turton, Biv. Brit. p. 95. t. 8. f. 2 ; T. Balthica, Fliil. En. Moll. Sic. 

 vol. i. p. 28 ; T. rubra, Ba Cost. Brit. Conch, t. 12. f. 14. 



T. testa rotundato-ovata, solida, subseqnilaterali, convexa aut 

 siibventricosa, magis minusve nitida, laevigata, albida, lutea, auran- 

 tia aut rosea; margine ventraK antice arcuato, postice sursmn 

 accHnato ; dorsali antice arcuato et subdeclivi, jjostice declivi et 

 vix convexiusculo ; latere antico paululiun longiore, rotundato ; 

 postico acuminato ; natibus acutis, prominentibus ; costa umbonali 

 obsoleta; ligamento magno prominente; dentibus angustissimis 

 et ssepe obsoletis. 



