161 



tinged with blue, more or lefs radiated with deep bkie or 

 purple, covered with a yellov\^ epidermis. In fhape it re- 

 fembles the edulis, but not fo much indented at the pofte- 

 rior fide, and is much more fmooth and gloffy. Infide glofTy, 

 blueifl^i-white, rayed with bhie like the outfide ; crenula- 

 tions beneath the beak fmall. Length about two inches ; 

 breadth one inch. 



This fpecies does not appear to be common. 



Mr. Pennant fays, it is found in Anglefea, fometimes 

 in Oyjier-heds ; fometimes in trowling over flutchy bottoms. 



We have found it fuflBciently plentiful on the fliore near 



Southampton ; but rarely elfewhere. 



4. 

 Mytilus barbatus. Lin. Syft. p. 1156. — Gmel A)7Z. p.3353.10. Barkatus. 



-Chem. Conch, viii. t. 84. f. 749. 



Pidt. Cat. Dorfet. p. 38. 



Don. Br. Shelh. ii. t. 70, 



Gualt. t. 91. H. middle figure. 

 Mytilus curtus, Br. Zool. t. 64. f. 76. A. 



Turt. Lin. iv. p. 292. 



M. with a thin, fub pellucid, fub-ovate, oblong fliell, 

 covered with a ferruginous-yellow epidermis, befet with 

 a thick beard about the front margin, and on the anterior 

 fide, mixed with fand, broken flielLs, and other extrane- 

 ous matter: the pofierior fide, towards the beak, extends 

 outwards a little, and rifes above the umbo, which gives it 



Y a 



