126 LAND AJVD FRESH WATER MOLLUSKS 



Lampsilis borealis Gray. 



Lhiio borealis Gray, Ottawa Naturalist, 1882, p. 53, plate with three figures. 

 Lampsilis borealis (Gray) Simpson, Synopsis, p. 535, 1900. 



Range. — St. Lawrence drainage. Lake of the Woods! Ottawa, 

 Ontario ! 



Lampsilis radiatus Gmelin. 



Mya radiata Gmelin, Syst. Nat., vi, p. 3220, 1792. 



Lmo radiatus Spengler, Skr. Nat. Selsk, 11, p. 3, 1792 ; ill, p. 62, 1793. — 



Conrad, Mon., 11, p. 24, pi. x, fig. 2, 1836. 

 La7npsilis radiatus Simpson, Synopsis, p. 535, 1900. 



Range. — St. Lawrence and Atlantic drainage, south to North 

 Carolina. Manitoba. 



Lake Winnipeg ! Saskatchewan River ! Nelson River drainage ! 

 Great Slave Lake (Kennicott) ! 



Lampsilis ligamentinus Lamarck. 



Unio crassus Say', Nicholson's Encycl., Am. ed., 11, Art. Conchology, pi. i, 



fig. 8, 18 1 7. Not Unio crassus 'Rtizms, 1788. 

 Unio ligameniina Lamarck, Anim. s. Vert., vi, p. 72, 18 19. — Kuster, 



Conch. Cab., Mon. Unio, p. 23, pi. iii, fig. 3, 1852. 

 Lampsilis ligamentinus Simpson, Synopsis, p. 539, 1900. 



Range. — Mississippi drainage, irregularly distributed in the St. 

 Lawrence drainage. 



Roseau River and Millwood, Assiniboine River, Manitoba. 



Lampsilis rectus Lamarck. 



Unio recta Lamarck, Anim. s. Vert. , vi, p. 74, 1819. — KiisTER, Conch. 



Cab., Mon. Unio, p. 35, pi. vi, fig. i, 1852. 

 Lampsilis rectus Simpson, Synopsis, p. 544, 1900. 



Range. — Entire drainage of the Mississippi and Alabama Rivers ; 

 St. Lawrence system. Red River of the North, Roseau and Assiniboine 

 Rivers in Manitoba ! 



Lampsilis ellipsiformis Conrad. 



Unio ellipsiformis Zaw&KV>, Mon., viii, p. 60, pi. xxxiv, fig. i, 1836. 



Unio spatulatus Lea (1845), Trans. Am. Phil. Soc, x, p. 80, pi. viii, fig. 22, 



1848. 

 Lampsilis ellipsiformis Simpson, Synopsis, p. 557, 1900. 



Range. — Mississippi drainage north of Lat. 38°, St. Lawrence 

 drainage, in part; Manitoba. 



Red River of the North ! Lake Winnipeg, Manitoba. 



Lampsilis alatus S.iy. 



Unio alatus Say, Nicholson's Encycl., ist Am. ed.. Art. Conchology, 11, pi. 

 IV, fig. 2, 1817. — Conrad, Mon., vii, p. 57, pi. xxxi, 1836. 



