FAMILY UNIONID^ I3I 



Genus Anodontoides Simpson. 

 Anodontoides ferussacianus Lea. 



Anodonta ffntssaiiiuui LicA, Trans. Am. Phil. Soc, v, p. 45, pi. vi, fig. 15, 



1834. 

 Aiiodonta buchanensis Lea, op. cit., p. 47, pi. xiv, fig. 43, 1838. 

 Anodonta argentea Lea, op. cit., viii, p. 223, pi. xix, fig. 41, 1842. 

 Anodonta ferruginea Lea, op. cit., viii, p. 225, pi. xix, fig. 43, 1842. 

 Anodonta pticata Halde.man, Joiirn. Acad. Nat. Sci. Phila., viii, p. 201, 1842. 

 Anodonta dcnigralu Le.\, Trans. Am. Phil. Soc, x, p. 285, pi. xxv, fig. 45, 



1852. 

 Anodonta oblita Lea, op. at., p. 46, pi. xxviii, fig. 52, 1852. 

 Anodonta sulhy/indracca Lea, op. cit., vi, p. 106, pi. xxiv, lig. 117, 1S38. 

 Anodonta modcsta Lea, Journ. Acad. Nat. Sci. Phila., n. s., iv, p. 364, pi. 



LXiii, fig. 189, i860. 



Range. — Mississippi drainage, St. Lawrence, Red River of tlic 

 North, and Saskatchewan basins. 



Lake Winnipeg ! Lake of the Woods ! 



Genus Symphynota Lea. 

 Subgenus Lasmigona Rafinescpic. 

 Symphynota costata Ratinesciue. 



jUusiiiidon/a costata Rafinesque, Ann. Gen. Sci. Bru.\., v, p. 318, pi. i.xxxil, 



figs. 15, 16, 1820. 

 Alasmodonta rugosa Barnes, Am. Journ. Sci., vi, p. 278, pi. xili, fig. 21, 



1823. 



Range. — Mississippi and St. Lawrence basins. 

 Manitoba in Roseau River ! 



Subgenus Pterosygna Rafinesque. 

 Symphynota complanata Barnes. 



Alasmodonta complanata BARNES, Am. Journ. Sci., vi, p. 278, pi. xill, fig. 



22, 1823. — Baker, Moll. Chicago Area, i, p. 60, pi. viii, figs. 1-2, pi. 



IX, figs. 1-4, 1898. 

 Complanaria gigas Sowerby, Conch. Manual, fig. 141, 1S39 ; 2d ed., p. 



115, fig. 141. 1842. 

 Unio kathctinct: Le.\, Synopsis, p. 35, 1838; Trans. .\m. Phil. Soc, vi, p. 



143, 1839. Lake Superior. 



Range. — Mississippi drainage north of Arkansas on the west and 

 Tennessee on the east; L^pper St. Lawrence and its tributaries. The 

 variety katherince northward from Lake Superior to the Mackenzie 

 and Keewatin. 



Lake Winnipeg ! Shell River and Lower Saskatcliewan I Xelson 

 River drainage; Assiniboine River; Red River of the North! Battle 

 River, Manitoba. 



