FAMILY UNIONID^E 1 29 



Anodonta fragilis LAMARCK, Anim. s. Vert., vi, p. 85, 1819. DELESSERT, 



Rec. Coq. Lam., pi. xm, figs. 2 a, 2b, 1841. 



Anodonta lacustris LEA, Proc. Acad. Nat. Sci. Phila., I, p. 84, 1857. 

 Anodonta flava, pallida, glandulosa and irisans ANTHONY, Am. Journ. Conch., 



i, pp. 161-3, pl- xiv-xvi, 1865. 

 Anodonta subcarinata CURRIER, Am. Journ. Conch., in, p. 113, pi. vi, fig. 5, 



1867. 

 Anodon exilis SOWERBY, Conch. Icon., xvn, pi. xxn, fig. 84, 1869. 



Range. Drainage of the St. Lawrence River basin, including the 

 lakes. 



Anticosti Island, in lake near Becsia River, six miles inland ! Battle 

 Creek, Manitoba ! 



Anodonta implicata Say. 



Anodonta implicata SAY, New Harmony, Diss., n, No. 22, p. 340, 1822. 

 CLESSIN, Conch. Cab., ed. n, Anodonta, p. 78, pi. xix, fig. 3, 1873. 



Anodonta newtonensis LEA, Trans. Am. Phil. Soc., vi, p. 79, pi. xxi, fig. 66, 

 1838. 



Anodonta housatonica LINSLEY, Am. Journ. Sci., 1845, P- 2 77- 



Range. Atlantic drainage from Virginia northward, St. Law- 

 rence drainage, Saskatchewan basin. 



Manitoba in Lake Winnipeg ! and Souris River ; lower Saskatche- 

 wan River ! 



Anodonta grandis Say. 



Anodonta grandis SAY, New Harmony, Diss., n, p. 341, 1829. CLESSIN, 



Mon. Anod. in Conch. Cab., n. ed., p. 96, pi. xxx, figs. 1-2, 1873. 

 Anodonta ovata LEA, Trans. Am. Phil. Soc., vi, p. 2, pi. u, fig. 2, 1838. 

 Anodonta salmonea LEA (pathologic), Trans. Am. Phil. Soc., vi, p. 45, pi. 



xiv, fig. 41, 1838. 

 Anodonta lewisti LEA, Journ. Acad. Nat. Sci. Phila., iv, p. 362, pi. LXII, 



fig. 187, 1860. 

 Anodonta footiana LEA, Trans. Am. Phil. Soc., vill, p. 225, pi. xx, fig. 44, 



1842. 



Anodonta marryattiana'L'E.A., op. cit., p. 226, pi. xx, fig. 45, 1842. 

 Anodonta gigantea LEA, Trans. Am. Phil. Soc. 1834, p. I, pi. I, fig. I 



(pathologic ? ). 

 Anodonta grandis SIMPSON, Synopsis Naiades, pp. 641-644, 1900 (with many 



synonyms). 



Range. Entire Mississippi system and southwest to Texas ; up- 

 per St. Lawrence drainage ; Manitoba. 



Red River of the North ! Shoal Lake ; Souris River ! Fairford 

 River ! and Lake Winnipeg, Manitoba ! 



Variety footiana Lea : Souris River, Manitoba ! Nipegon River, 

 Lake Hannah. 



Variety gigantea Lea : Manitoba. 



This variable and widely extended species is responsible for many 

 synonyms cited by Mr. Simpson. It appears that the Manitoba and 



