336 UNIONID^ 



1836. Marcfarita [pars] : Lea, Synop. Fam. Naiad., ed. 1, p. 26. 



1846. Luticola, Goldf. : Agassiz, Nomcncl. Zool., Moll., p. 51. 



1847. Mysia, Turton : Gray, Proc. Zool. Soc. Land., xv, p. 196. 



[Err. typ. pro Mysca; non Mysia, Leach.] 

 1852. Maryaron [pars] : Lea, Synop. Fam. Naiad., ed. 3, p. 30. 



[Very many subgenera have been founded, mostly for 

 American species, that are now ranked as distinct 

 genera and are consequently here omitted.] 



[No attempt has been made to identify with British all 

 the innumerable so-called species of Unio founded 

 by continental writers on uncertain external 

 characters; only such as could be satisfactorily 

 identified are included.] 



1. Unio pictorum (Linnaeus). 

 Etym. : — Lat. pictor, a painter. 



1758. Mya pictorum: Linn^us, Sysf. Nat., ed. 10, p. 671, 



no. 19. 

 1767. Mya pictorum : Linn^us, o. c, ed. 12, p. 1112, no. 28. 

 1774. Mya pictorum : Muller, Verm. Ilisf., ii, p. 211. 



1777. Mya pictorum, Linn. : Pennant, Brit. Zool., ed. 4, iv, 



8vo, p. 79 ; 4to, p. 67, pi. xliii, f. 17. 



1778. Mya pictorum : DaCosta, Test. Brit., p. 228, pi. xv, 



f. 4. 

 1788. Unio pictorum : Retzius, Nova Test. Genera, p. 17. 

 ?1788. Unio oval is : Retzius, /. c. 

 1791. Mya pictorum : Gmelin, in Linn. Syst. Nat., ed. 13, i, 



pt. 6, p. 3218, no. 3. 

 1799. Mya ovalis : Pulteney, Cat. Dorset., p. 27. 

 1801. Mya ovalis : Donovan, Brit. Shells, iii, pi. Ixxxix. 

 1801,) Unio pictorum : Draparnaud, Tabl. Moll. France, 

 July./ p. 106. 



1803. Mya pictorum, Lin. : Montagu, Test. Brit., p. 36. 

 1805. Unio pictorum, Linn. : Draparnaud, Hist. Moll. France, 



p. 131, pi. xi, f. 1-3. 

 1807. Mya Batava : Maton & Rackett, Trans. Linn. Soc, 



viii, p. 37. 

 1813. Mya pictorum : Rackett, in Pulteney, Cat. Dorset., 



ed. 2, p. 28, pi. xii, f. 4. 

 1815. Lymnium pictorum : Oken, Lehrhuch Naturg., iii, abt. 1, 



p. 237. 

 1817. Mya pictorum, Linn. : Dillwyn, Cat. Shells., i, p. 49. 



1819. Unio rostrata : Lamarck, Hist. Ayiim. s. Vert., vi, pt. 1, 



p. 77. 



1820. Unio rostratus, mihi : Studer, Naturw. Anz. Ally. 



Schtveiz. GeselL, iii, p. 93. (In reprint, 

 " Syst. Verzeichn.," p. 30.) 



