PLATE LXXXV. 



MYA ARENARIA. 



SAND 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 in- 

 serted in the opposite valve. 



SPECIFIC CHARACTER. 



AND 



SYNONYMS. 



Shell rather ovated, one end rounded, the other narrow and gaping. 

 Hinge, in one valve a hollow cavity, near which a broad, erect, rounded 

 tooth of the opposite valve is received. 



Mya Arenaria : testa ovata posterius rotundata, cardinis dente an- 



trorsum porrecto rotundato denticuloque laterali. 



Lin, Faun. Suec. 2127. — Gmel. Linn. Syst. p, 



3218. 303. sp, 2. 

 Mya Arenaria. Sand. Penn. Br, Zool. p. 79. T. 42. 16. 

 Chamae media ovata fusca. Arenaria. Da Cojia. Br. Conch, p. 232. 



sp. 56. 

 Mya Arenaria. Bast, opv.sc. subs. 2. p. 69. t. l,fg, 1-3. 



