Recent Canadian Union id a. 253 



at Rondeau, on Lake Erie, and in the east and west 

 branches of the Grand River at Gait and Ayr. 



In another letter to the writer, Mr. Simpson makes the 

 following remarks upon this species, " The so-called 

 Anodontas of which this is the type, have more or less 

 perfect cardinals and occasional vestiges of laterals. They 

 group with Margaritana Elliotti, M. Spillmani, M. Ravene- 

 liana, etc. The genus Margaritana is a medley of forms, 

 which, for the most part, are more nearly related to 

 various groups of Unio than to each other. I believe that 

 Margaritana should be merged into Unio, and with it the 

 Anodontas of the edentula group." 



Axodoxta Ferussaciaxa, Lea, 



L'Orignal Creek, Ottawa River, Dr. R, Bell, 1855 (as 

 A. pavonia, Lea). Ponds at the Mile End, Montreal, Dr. 

 R. Bell, 1858, and J. F. Whiteaves, 1862. 



Axodoxta fluviatilis, Dillwyn. Sp. (A. cataracta, Say.) 



Several specimens of this common eastern species, 

 which has previously been recorded as occurring at many 

 localities in the Province of Quebec and neighbourhood of 

 Ottawa, were collected by Dr. R. Bell, in 1883, at Flying 

 Post Route, 100 miles north-east of Michipicoten, and, in 

 1889, from a small lake near Proudfoot's north and south 

 line, in the Sudbury district of Ontario. A single speci- 

 men, which may be referable to this species, was collected 

 by Professor Macoun, in 1884, at White Fish River, north 

 of Lake Superior. 



Axodonta Footiaxa, Lea. 



Specimens which are said to have been identified with 

 this species by Dr. Lea were collected by Mr. W. M. S. 

 D'Urban, in 1858, from three small lakes tributary to the 

 Riviere Rouge, P.Q. Since then, specimens, which Mr. 

 Simpson refers to A. Footiana, have been collected in 



