344 UNIONID^ 



1767. Mya margaritifera : Linn^us, o.c, ed. 12, p. 1112, 



no. 29. 

 1774. Mya margaritifera : Muller, Verm. Hist., ii, p. 210. 



1777. Mya margaritifera, Linn. : Pennant, Brit. Zool., ed. 4, 



iv, 8vo, p. 80 ; 4to, p. 67, pi. xlviii, f. 18. 



1778. Mya margaritifera : DaCosta, Test. Brit., p. 225, pi. xv, 



f. 3. 

 1788. Unio margaritiferus [pars] : Retzius, Nova Test, genera, 



p. 16. 

 1788. JJnio crassus : Retzius, o. c, p. 17. 

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



i, pt. 6, p. 3219, no. 4. 

 1803. Mya margaritifera, Liun. : Montagu, Test. Brit., p. 33. 

 1807. Mya margaritifera, Linn. : Maton & Rackett, Trans. 



Linn. Soc, viii, p. 40. 

 1807. Unio Lemovicince : Ferussac, Essai method. Conchy!., 



p. 114. 

 1816. Margartifera [sic] fluviatilis : Schumacher, Overs. K. 



Dansk. Vidensk. Selsk. Forhandl, 1816, p. 7. 

 1817,) Mya margaritifera, Linn. : Dillwyn, Cat. Shells, i, 

 Jan. J p. 52. 



1817,1 Margaritana fluviatilis : ScuvMAcnuR, Essai Syst. Test., 

 Mar. / p. 124, pi. x, f. 4. 



1819. Unio elongata : Lamarck, Hist. Anim. s. Vert., vi, pt. 1, 



p. 70. 

 1821. Unio margaritifera, lAnn. : C.Tffaffer, Naturg. Deutsch. 



Moll, i, p. 116, pi. V, f. 11. 

 1821. Unio liforalis [sic. pars] : C. Pfeiffer, t. c, p. 117. 

 1823. Unio elongatus : Nilsson, Hist. Moll. Svec, 1822 [i.e. 



1823], p. 106. 

 1823.. Unio ater : Nilsson, o. c, p. 107. 



1823. Mya margaritifera : [Brown], Ency. Brit., ed. 6, vi, p. 405. 

 1823,\ Alasmodonta arcuata : Barnes, Amer. Journ. Sci., vi, 

 Apr. J p. 277, pi. xii, f. 20. 



1827. Unio elongata, Lam. : Brown, Illnst. Conch. Brit., ed. 1, 



pi. xxvi, f. 1. 



1828. Alasmodon margaritiferimi, Linn. : Fleming, Hist. Brit. 



Anim., p. 417. 

 1831. Unio margaritiferus : Turton, Manual, p. 19, f. 9. 

 1831. Unio roissyi, nobis: Michaud, Conifl. Hist. Moll. 



France Drap., p. 112, pi. xvi, f. 28. 

 1836. Margarita (Margaritana) margaritifer. Lea : Lea, Synop. 



Fam. Naiades, ed. 1, p. 45. 

 1836. Alasmadonta [sic] arcxtata, Barnes : Jay, Cat. Shells, 



ed. 2, p. 23. 

 *1840. Unio hrunnea : Bonhomme, Mem. Soc. Aveyr. Rodez, 



ii, p. 430. [Teste Moquin-Tandon.] 

 1840,) Alasmodon margaritiferus, Linn. : Gray, in Turton's 

 Apr. J Manual, new ed., p. 293, pi. ii, f. 9. 



