PLATE CLXXVI. 



MYA PR^TENUIS. 



THIN WHITE SPOONHINGE GAPER. 

 GENERIC CHARACTER. 



Animal an Ascidia. Shell bivalve, gaping at one end. The 

 hinge for the most part furnished with a thick, strong, and broad 

 tooth, not inserted into the opposite valve. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell ovate, subpellucid, fragile, white ; tooth in both valves at the 

 hinge oval, and patulous. 



My A Pr^etenuis : testa ovata subpellucida fragili alba, cardinis 

 dente ovali patulo. 



Mya PRjETENI/is : testa ovata subpellucida fragili alba subumbonali 

 pubescente, cardinis dente ovali patulo. Pult. 

 Cat. p. 28. 



Cham A pratenuis cardine cochleato porrectiore. Petiv. Gaz. 

 t. 94. 4. 



This delicate shell was first observed by us on the sandy coast of 



Caermarthenshire. We have since received the same kind from the 



shores of Cornwall, where it was found by Miss Pocock. Petiver 



h 4 



