341 



J , ' [ Unio littoralis : Draparnaud, Tahl. Moll. France, p. 107. 



1801, \ Mya crassa, nob. : Vallot, Exer. Hist. Nat., p. 7. 



Aug. J [Teste Drouet.] 



1805. Unio littoralis, Cuv. : Draparnaud, Hist. Moll. France, 



p. 133, pi. X, f. 20. 

 Unio litoralis [sic], Lam. : C. Pfeiffer, Naturg. Deutsch. 



Moll, i, p. 117, pi. V, f. 12. 

 Unio crassus, Retzius : Nilsson, Hist. Moll. Svec., 1822 



[i.e. 1823], p. 108. [Non Retzius.] 

 Unio stihtetragona, nobis : Michaud, Compl. Hist. 



Moll. France Drap., p. Ill, pi. xvi, 



f. 23. 

 1831, \ Unio Draparnaldi, nob. : Deshayes, Descript. Coq. 

 Sept. J Terrains, p. 43, pi. xiv, f. 6. 



1834. Unio Pianensis, nob. : Farines, Bull. Soc. Philom. 



Perpignan, 1834, p. 57, pi. f. 1-3. 

 1836. Margarita {Unio) litoralis. Lam. : Lea, Synop. Naiades, 



p. 34. 



1839. U7iio antiquior (Strickland) : Murchison, Silurian 



System, p. 555. [Nom. nud.] 



1840. Mysca (Potomida) littoralis : Swainson, Treatise Malac., 



p. 379. 

 1849. Unio Asterianus, Dup. : Dupuy, Cat. Extramar. GallicB 

 Test. [p. 4], no. 320 ; Hist. Nat. Moll. France, 

 p. 636, 1852, pi. xxiii, f. 9. 



1852. Margaron {Unio) litoralis, Drap. : Lea, Synop. Naiades, 



ed. 3, p. 34. 



1853. Potamida littoralis. Lam. : Morch, Cat. Conch. Yoldi, 



ii, p. 47. 

 1856. Unio {Lymnium) rhomhoideus, Schrot. : Moquin-Tandon, 



Hist. Moll. France, ii, p. 568, pi. xlviii, 



f. 4-9. 

 fcl857. Unio {Nida) litoralis, Drap. : H. & A. Adams, Genera 



Moll, ii, p. 493. 

 1858. Unio antiquior, Strickl. : Jardine's Memoirs of Strick- 

 land, pp. 96 & 97. 

 1908. Unio kinkelini, Haas: Haas, Nachrbl Deutsch. Malak. 



Gesell, xl, 1908, p. 177. 

 [1911. Unio {Rhombunio) littoralis. Lam. : Germain, Bull 



Mus. Hist. Nat. Paris, 1911, p. 67. 

 [1917. Rhombunio littoralis. Lam. : Haas, Bol. Soc. Aragon. 



Cicn. Nat., xvi, p. 77 (& p. 79). 



First recorded as British in 1838, by G. B. Sowerby (II), 



in J. Morris {Mag. Nat. Hist., ii, p. 547). 

 British Distribution in Time : Pleistocene. 



