NORTH SIDE OF THE BAY OF BISCAY, IN AUGUST, 190<J. 371 



SAXICAVID^. 



Saxicava, Fleuriau Bellevue. 

 Saxicava arctica (Linne). 

 Mya arctica, Linne, 1766. Systema Naturse, edit, xii, p. 1113. 

 The synonymy of this genus or species is very much involved, the 

 number of species still being a very open question. Mr. E. A. Smith's 

 opinion is that rugosa is the only species, the other so-called ones 

 being varieties. The shells under consideration are undoubtedly the 

 rugosa var. arctica figured by Jeffreys in his " British Conchology," v, 

 pi. li, fig. 4. Generally distributed in the North Atlantic, from Green- 

 land and Norway to Cadiz Bay, and in the Mediterranean. 

 Station I. 75 fathoms. Six living. 

 „ II. 75 fathoms. Two living. 



ANATINACEA. 



PANDORID^. 



Pandora, Brugiere. 

 Pandora inaequivalvis (Linne). 



Tellina incequivalvis, Linne, 1766. Systema Naturae, edit, xii, p. 1118. 



Pandora rostrata, Forbes and Hanley, 1853. Hist. Brit. Moll., 

 vol. i, p. 207, pi. viii, figs. 1-4. 



One valve only in poor condition, and this circumstance makes an 

 examination of Mons. Locard's remarks, when dealing with P. pinnoides 

 (Moll. Test. Trav. et Tal.) of doubtful utility, though he appears to 

 have had only one specimen to base his conclusions on. 



Station V. 109 fathoms. One left valve. 



LYONSIID.^. 



Lyonsia, Turton. 

 Lyonsia norvegica (Chemnitz). 



Mya norvegica, Chemnitz, 1788. Conch. Cab., vol. x, p. 345, pi. 170, 

 f. 1647. 



Lyonsia stricda, Turton, 1822, Conch. Insul. Brit., p. 35, pi. 3, 

 figs. 6, 7. 



Hyatella striata, Brown, 1827. 111. Conch. Gt. Brit., pi. xvi, figs. 26, 27. 



Generally distributed throughout the European seas and Mediter- 

 ranean. 



Locard splits this species into two, norvegica (Chem.) and striata 

 (Mont.). Not having sufficient material at hand, I am content to let 

 the generally accepted name stand for the present. 



Station I. 75 fathoms. One Hving. 



