PLATE XCIL 



MYA TRUNCTATA. 



truncj4ted caper. 



GENERIC CHARACTER. 



Animal an ascidia. Shell bivalve, gaping at one end. The hinge 

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

 inserted into the opposite valve. 



SPECIFIC CHARACTER 



AND 



SYNONYMS, 



Shell roundish, one end trunctated or abrupt. Tooth projecting 

 and obtuse. 



My A TRUNCTATA: testa ovata posterius trunctata, cardinis dente 

 antrorsum porrecto obtussissimo. Linn, a, 

 Gmel. Syst. Nat. T. I. Jig. 6. p. 3217. 



Concha laevis, altera tantum parte clusilis, apophysi admodum pro- 

 minente lataque praedita. List. H. An. Angl. 

 p. 191. tit. 36. tab. 5. Jig. 36, 



