PLATE CXXVITI. 



FIG. II. II. 

 MYTILUS UNGULATUS. 



CLAWED MUSCLE, 



Specific character 



AND 



SYNONYMS. 



Shell smooth, somewhat curved : posterior margin inflected: hinge 

 terminal, bidentated. 



Mytilus ungulatus : testa kevi subcurvata : margine posteriori 

 inflexo, cardine terminali bidentato. Linn. — 

 GnieL Syst. Nat. T. I. p. 6. p. 3354. Sp. 12. 



Several shells of this kind were picked up by Miss Pocock, on the 

 coast of Cornwall. It was before known as an inhabitant of the 

 Mediterranean, but not as a British species.. 



Fig. II. II.— Upper and lower Figures. 



