,1 214 ] 



GENRE XI. 



Mytilus. Moule. 



GENUS XI. 

 Mytilus. Muscle. 



■'bivalves with equal vakes, and fhut clofe. Bivalves à baltans égaux, qui fe ferment 



The hinge is toothlefs:, and confifts of a exaftement. La charnière eft fins dents, 



longitudinal and linear furrow.— The & compofée d'une rainure longitwdi- 



animalj an AJcidia ? xiale & en ligne. — L'animal eil lia 



AJcidia ? 



* FLUVIATILES. Rives.. 

 XLVI. 



M. Cygneus. Great Horse Muscle. 



* FLUVIATILES. 

 XLVL 



M, 



TT I LU S fliiviatilis maximum, admodum tenuis ex fufco viridejcens . Cygneus-. 



Mujculus latus maximuSy tefta adr,todum tenui, exfitjco viridejcens, paluftris. Lift. Appv 

 H. An. Angl. p. 8. tit. 30. tab. i. fig. 3. & App. H. An. Angl. in Goedart. p. 9. 

 tit. 30. tab. I. fio'. 3. — Mujculus latus maxinnc-s iâ tenuijffimus ê cœruleo viridejcens, Jere 

 falujlris. H. Conch, tab. 156. fig. 11. 



Mytilus f.uminum }naximtsjubviridis. Piott Oxfordfti. ch. 7. § 32. — M. Cygneus. Swan-^ 

 Venn. Brit. Zool. No. 78. tab. 67. fig. 78. and in many of our Englijh writen this and the 

 following kind are indijo-iminately put together. 



Mujculus fluviatilis maximus, p'ofunde Jiriatus, latus -, tejia admodum tenui, ex fufco viri^ 

 defcens, interdum rufefcens, intus argenteus. Gualt. I. Conch, tab. 7. fig. F. 



Concha teJia oblonga ovata longitudinaliterfubrugofa, foftice compreJJo-promimJa. Lin. F. 

 Suec. I. p. 380. No. 133-. — Cygneus. Mytilus iejia ovata antice comprejjiujcula fragilijjma 

 lardine laterali. S . N . p. 1 1 5 8 . No. 2 5 7 . 



This is a large and broad fpecies, from Une efpece grande & large, de cincq a 



five to fix inches broad, or from fide to fide, fix pouces en largeur, ou de coté à coté, 



and only about two inches and a half to & feulement environ deux pouces & demi 



three inches long, or from the hiHge to the à trois pouces en /w/o-aea?-, ou dès la charnière 



oppofite or bottom margin; of an oval au bord oppofé ; d'une/o;-;.w ovale ; mince, 



Jhape; thin, femitranfparent, brittle, and demitranfparente, fragile, & légère ; & 



light ; and the valves are very deep or les valves font fort profondes ou concaves, 

 concave. 



Outfide, wrouglit with numerous ftrong Vexterieur, â ridei nombreufes, fortes, 



concentric tranfverfe wrinkles, and has tranfverfalcs & concentriques, & porte 



often fouvent 



