19 



BIVALVE SHELLS. 



MYA. 



Mya glycymeris, Gniel. Si/st.ip. 3222, TurL'iv. p. 178. Glycymeeis. 



Lister Conch. t.4n4., f. qji^.r/iew. Conch, vi. t. 3. f. 25. 

 Don. Br, Shells iv. t. 143. — Lin. Ivans, viii. p. 34. 



Whether this flicll fliouldbe admitted in tliis work is much 

 to be doubted, fince it is only on the authority of opinions, 

 Avithout fact, that Mr. Donovan originally introduced it as 

 Britijfj : indeed he does exprefs fome doubt, but obferves, 

 " It is a kind acknowledged however as fuch, by collectors 

 of Englijh Natural Hiflory in general ; and is faid to have 

 been undoubtedly fiflied up in the deep waters between the 

 Dogger-Bank and the eaftern coafl: of England " 



Slight as this author acknowledges his authority for giving 

 it a place in the catalogue of BritiJJj Tejlacea, we have thought 

 proper to give a fliort defcription of it. 



Shell oblong, very thick, tranlverfely wrinkled^ and gaping 

 al both ends : the colour is cinereous or ochraceous : hinge 

 furnifhed with a very thick primary tooth, and a fmaller 

 one, befides a feries of wrinkles. Length five inches, 

 breadth nine or ten, 



C 2 This 



