PLATE XCII. 



MYA TRUNCTATA. 



TRUNCATED GAPER, 



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. 



Mya trunctata : testa ovata posterius trunctata, cardinis dente 



antrorsum porrecto obtussissimo. Linn. a. 



Gmel. Sj/st. Nat. T. I. jig. 6. p. 3217. 

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



minente lataque prsedita. List. H. An. Angl. 



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



