133 Capt, Blakiston on the Birds of the 



noveboracensis ; but Mr. Lawrence has described a second species 

 as M. scolopaceus, the principal distinction of which is size. Mr. 

 Ross records both species from Mackenzie River. I am inclined, 

 however, to doubt the existence of M. scolopaceus as a distinct 

 species, and should not be at all surprised if all Mr. Lawrence^s 

 birds turned out to be females, the greater size of which obtains 

 in some birds of this family. 



Tringa canutus. 



Arctic America and Hudson's Bay ('Fauna Bor.-Am.'). 



Tringa maritima. 



Melville Peninsula and Hudson's Bay ('Fauna Bor.-Am.'). 



Tringa alpina, var. Americana, 



Arctic Sea, Saskatchawan, and Hudson's Bay (' Fauna Bor.- 

 Am.'). Mr. Murray also records T. alpina from Hudson's Bay, 

 whence also I have seen a specimen. 



Tringa maculata. 



Common on the Mackenzie (Bernard Ross). 



Tringa wilsonii. 



Breeds within the Arctic Circle (' Fauna Bor.-Am.' as T. 

 pusilla of Wilson). Tringa minuta (Liesler) is also given by the 

 same authority from Hudson's Bay. Mr. Ross obtained the 

 former on the Mackenzie. 



Tringa bonapartii. 



A specimen is noted from the Saskatchawan in the ' Fauna 

 Bor.-Am.' under the name of T. schinzii; and Mr. Ross notices 

 it as a bird of the Mackenzie, where he procured its egg. It has 

 been obtained by United States Expeditions as far westward as 

 the Yellowstone branch of the Missouri. 



Calidris arenaria. 



Given by Mr. Ross on the Mackenzie, is also noticed in the 

 ' Fauna Bor.-Am.,' but no specimen is there recorded. Between 

 Hudson's Bay and Lake Winipeg I shot what I took to be the 

 Sanderling. 



Ereunetes petrificatus. 



This was first given in the ' Fauna Bor.-Am.' on the authority 

 of Hutchins from Hudson's Bay. At York Factory, on the 



