318 



rascente induta ; latere antico breviore ; postico haud acuminata ; 

 ligamento permagno; natibus et umbonibus plerumque erosis. 



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

 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, which is regularly sub- 

 arcuated. The ligament is very large and prominent. 



Arctic Ocean. 



188. Tellina Iabeicii (pi. lix. f. 112.) Hanley ; Venus fra- 

 gilis, Otho Fair., Faun. Groen. p. 413. 



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

 tricosa, impolita, extus intuscpie albida, epidermide cinerascente 

 induta, conccntrice subrugulosa j margine ventrali magis minusve 

 arcuato; dorsah utrinque convexiusculo, antici subdcclivi, postice 

 dechvi; latere antico rotundato; postico vix etiam obtusissime 

 subangulato ; natibus erosis ; hgamento permagno, prominente ; 

 flexura obsoleta,; dentibus minimis. 



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

 covered by an ashy epidermis, concentrically wrinkled by the hues 

 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 large, and prominent ; flexure obsolete ; teeth 

 very small. 



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

 orginal specific appellation of the shell. 

 Northern Seas. 



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

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

 Gen. Con. 193. t. 46. f. 2; Lam. no. 51 ; Hard. Des. Cat. p. 70. 

 t. 4. f. 84 ; T. zonata-, Bilbo. D. Cat. p. 100 j Psammobia solidula, 

 Twrton, Biv. Brit. p. 95. t, 8. f. 2 ; T. Balthica, Phil, En. Mod. Sic. 

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



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

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

 tia aut rosea; margine ventrali antice arcuato, postice sursum 

 acclinato ; dorsali antice arcuato ct subdeclivi, postice declivi et 

 vix convexiusculo ; latere antico paululum longiore, rotundato ; 

 postico acuminata; natibus acutis, prominentibus ; costa umbonali 

 obsoleta; ligamento magno prominente; dentibus angustissimis 

 et ssepe obsoletis. 



