PLATE LXXXI. 



MYTILUS PELLUCIDUS. 



PELLUCID MUSCLE. 

 GENERIC CHARACTER. 



The hinge toothless and consists of a longitudinal furrow. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Oblong, very pellucid, rayed longitudinallywith purple. 



Mytilus pellucidus : oblonga pellucida longitudinaliter violaceo- 



radiata. 

 Mytilus pellucidus. Penn. Brit. Zool. 4. p. 112. sp. 75. 



This is one of the new species of Mytilus discovered by Pennant 

 on the coast of Anglesea, where he says, it is " found sometimes in 

 oyster-beds, and sometimes in trawling over slutchy bottoms." We 

 dredged up a specimen of it in the straits of Menai, but it was rather 

 less of an oblong form than that described and figured by Pennant; 

 and another similar to' it was also found on the Flintshire shores:— 

 both Pennant's specimen and ours are figured in the annexed plate. 



vol. in. C 



