PLATE CLXXIV. 



MYA PICTORUM. 



PAINTER S MUSCLE. 



GENERIC CHARACTER 



Animal Ascidia. Shell bivalve, gaping at one end. The hinge 

 for the most part furnished with a thick, strong, broad tooth, not in- 

 serted into the opposite valve. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell oblong, rounded at both ends ; a single crenulated tooth in one 



valve, and two in the other. 



Mya pictorum : testa oblonga antice posticeque rotundata, cardi- 



nis dente primario crenulato, alterius duplicate 



Mya pictorum. Linn. Fn. Suec. 2129. 



Mya pictorum, Moule des Peintres. Chemn. Conch. 6. /. l.f. 6. 



Belg. verf houder. — Dan. Maler miegen,— 

 Maler Skiael, ibid. 



Two, or perhaps no less than three different kinds of the fresh 

 water Mya have been confounded with the M. pictorum of Lin- 

 nsus ? as it has been already intimated in the dssci iption of the Mya 



