60 Capt. Blakiston on the Birds of the 



in the 'Fauna Bor.-Am./ from Fort Franklin, near the Arctic 

 Circle ; while all those enumerated in Professor Baird's Report are 

 from the Pacific side of the Rocky Mountains. This is sing-ular, 

 but only helps to prove the mingling of the fauna, as well as 

 the flora, of the Atlantic and Pacific slopes in the far north, which 

 has been adverted to elsewhere. » 



SlALIA ARCTICA. 



As I do not include any portion of Canada in the " interior/^ 

 I cannot take notice of specimens of the Blue Bird {S. sialis) 

 killed on Lake Huron, as recorded in the ' Fauna Bor.-Am/ 

 The western species which heads this note, however, was obtained 

 on Great Bear Lake by Dr. Richardson ; while T observed what 

 I took for this bird on both slopes of the Rocky Mountains, when 

 I crossed by the Kootonay Pass, in August 1858. 



Regulus calendula. 



The Ruby-crowned Wren is mentioned by Mr. Bernard Ross 

 as rare at Great Slave Lake, from whence the Mackenzie runs 

 towards the Arctic Sea. T observed and shot specimens of a 

 Regulus, which was not uncommon, on my boat-voyage in 

 September between Hudson's Bay and Lake Winipeg; it asso- 

 ciated with the Tits [Parus airicapillus et P. hudsonicus). I saw 

 it as far as the Grand Rapid, near the embouchure of the Saskat- 

 chawan, at the north-west corner of that lake. I also observed 

 a species on Bow River, at the eastern base of the Rocky Moun- 

 tains. The ' Fauna Bor.-Am.' does not give any species. 



Hydrobata mexicana. 



Specimens were obtained by Mr. Drummond, the botanist, at 

 the head waters of the Athabasca River, and described by Swain- 

 son in the ' Fauna Bor.-Am.' as Cinclus americanus. It does not 

 seem to be known on the eastern side of the continent. Mr. Lord, 

 who has collected extensively in British Columbia, considers that 

 all may be referred to one species. 



33. Anthus ludovicianus. 



My two specimens {' Ibis,' vol. iv. p. 4) seem to show that this 

 is A. aquaticus of the ' Fauna Bor.-Am.' from the Saskatchawan. 

 I did not find it nearly as plentiful as the following species. 



