2(J. PEKisouEtrs. 105 



Dysornitliia cauadeusis, Swaiun. t. c. pp. I'M, 495. 



I'erisoi-eus cauadensis, Bp. Comp. Lid B. Eur. and N. Amer. p. 27 ; 



Grail, Gen. B. ii. p. .'JOlj ; Bp. Comp. i. p. ii7-^ ; Cab. 3Ius. Ilcin. 



Th. "i. p. 219 ; Baml, B. N. Amcr. p. 590 ; Grmj, Hand-l. B. ii. 



p. 3 ; Coues, Km/ N.-Amer. B. p. IGG ; Baird, Breiuer, iS* -Ridr/iv. 



N.-Amer. B. ii.'p. 299, pi. 41. fig. 3 ; Coues, B. N. West, p. 221. 



Adult male. Upper surface dull grey, somewhat tinged with brown 

 on the mantle ; nasal bristles, forehead, and anterior part of crown 

 whitish, slightly tinged with brown, and then shading off from grey 

 into black, of which colour the hinder part of the crown and nape 

 is composed ; the plumes round the eye also streaked with blackish ; 

 checks, throat, sides of face and of neck white ; rest of under sur- 

 face ashy brown, inclining to white on the vent, the under wing- 

 coverts greyish ; wings above dull grey like the back, the primaries 

 blackish, some of the wing-coverts and all the secondaries narrowly 

 tipped with white ; tail rather more slaty grey than the back and 

 tipped ^^'ith white ; " bill, legs, and feet black ; iris dark brown " 

 (5. R. Boss, MS.). Total length 11 inches, cdmon 0-9o, wing 

 5'6o, tail 5*7, tarsus 1'35. 



Adult female. Not perceptibly different from the male. Total 

 length 10-5 inches, wing 5-4, tail 5-5, tai-sus I-Ij.j. 



Young. Different from the adult. Entirely dark plumbeous, 

 blacker on the ear-coverts ; the wing-coverts with indistinct 

 brownish edgings ; the abdomen lighter grey than the breast, with 

 fulvescent tips to the feathers ; quills and tail-feathers clearer grey 

 than the back, with white tips. 



Hah. Canada, Maine, Labrador, to the Yukon. 



a, h. Ad. sk. North America. Dr. Ridgeway [P.]. 



c. Juv. sk. North America. Dr. Rae [P.]. 



d, c.S 2 ad.sk. Fort Simpson, April 7, 1802. B. R. Ross, Esq. [P.]. 

 /. Ad. sk. Fort Simpson, March 2fi, 1S60. R. R. Ross, Esq. [P.I. 

 //. .luv. sk. Fort Simpson, June 18(32. B. R. Ross, Esq. [P.J. 

 h, i, k. Ad. sk. 49th parallel, August 1874 N.-A. Boimdaiy Coni- 



(Daioson). mission [P.]. 



/. 5 ^•d- sk. West side of Rocky Mountains. J. K. Lord, Esq. [P.]. 



3. Perisoreus obscurus. (Plate Y. fig. 2.) 



Perisoreus canadensis, Newb. P. Bail. Bep. vi. p. 85 (ne.c L.) ; Dull 



Sf Bann. Tr. Chicago Acad. i. p. 280 ; Cooper, B. Calif, i. p. 397 ; 



Finsrh, Ahltandl. Bremen, iii. p. 40. 

 Perisoreus canadensis, var. obscurus, Bidgio. Bull. Essex Inst. v. 



p. 199 ; Baird, Breiver, i§- Ridgw. N.-Anier. B. ii. p. 302 ; Coues, 



B.N.West,^.221. 



Adult. Above dusky brown, with whity-brown streaks to all the 

 feathers of the back and scapulars ; the wing-coverts and quills ex- 

 ternally greyish, with pale whitish tips, very indistinct ; tail-feathers 

 ashy brown, with scarcely perceptible whitish tips ; nasal bristles, 

 forehead, and lores white ; the crown and hind head dusky brown 

 sides of face entirely white ; sides of neck \vhitish ; hind neck ashy 

 brown, rather lighter than the back ; throat white ; rest of under 

 surface pale brownish, lighter and more wliity brown in the centre 



VOL. ni. I 



