42 MYA. 



Mya Glycymeris. Born. Mus. p. 20. t. 1 . f. 8. Chemnitz, 

 vi. p. S3, t. 3. f. 25. Schroeter EinL ii. p. 618. Gmelin, 

 p. 3222. Donovan, iv. t. 142. Maton and Racket, in 

 Lin. Trans, viii. p. 34. Montagu Supp. p. 19. Wood's 

 Conch, p. 1 14. t. 25. f. 1. 

 Lister Conch, t. 414. f. 258. Gualter, t. 90. f. A. 

 Inhabits the coasts of Spain. Lister. Mediterranean, and the 



coasts of Portugal. Chemnitz. Naples. Ulysses. 

 Shell sometimes rather more than four inches and a half long, 

 and nearly twice as broad, of a reddish or yellowish fawn 

 colour ; the anterior end is truncated, and the whole surface 

 marked with transverse ridges, and intermediate smaller 

 striae ; it has a thick patulous tooth, which, Mr. Donovan 

 says, is not inserted into the opposite valve. Its claim to be 

 considered a native of Britain is extremely doubtful. 



truncata. 2. Shell ovate, truncated behind ; hinge 

 with a tooth projecting forwards, and very 

 obtuse. 



Mya truncata. Linnceus Syst. Nat. p. 1112. Pennant 



Zool. iv. p. 78. t. 41, f. 14. Chemnitz, vi. p. 8. t. 1. f. 



1 and 2. Fabricius Fauna Grcenl. p. 404. Schroeter 



EinL ii. p. 600. Gmelin, p. 3217. Schreber's Conch. 



p. 1. Dorset Cat. p. 27- t. 3. f. 1. Donovan, iii. t. 



92. Montagu Test. p. 32. Maton and Racket, in Lin. 



Trans, viii. p. 35. Wood's Conch, p. 90. t. 17. f. 1 



and 2. 

 Chama truncata. Da Costa Brit. Conch, p. 233. t. 15. 



f. 1. 

 Lister Anim. Ang. t. 5. f. 36. Conch, t. 428. f. 269. 



Gualter. t. 91. f. D. Petiver Mus. t. 79. f. 12. Enc. 



Method, t. 229. f. 2. 

 Inhabits the sand or gravel about low water mark, on most of 



the Northern Shores of Europe. Britain. Lister, fyc. 

 Shell from one and a half to two and a half inches long, and 

 from two and a half to three and a half inches broad, white, 

 covered with a brownish yellow wrinkled tough epidermis, 

 and much truncated at the smaller end. 



arenaria. 3. Shell ovate, rounded behind ; hinge 

 with a rounded tooth projecting forwards, 

 and a smaller one by its side. 



Mya arenaria. Linnaus Syst. Nat. p. 1112. Pennant 

 Zool. iv. p. 79. t. 42. f. 16. Chemnitz, vi, p. 10. t. 1. 



