BUTEO. 257 



8. Amur-land, 8th May (Field Coll.). Crowley Bequest. 



2. Amur-land, llth May. Crowley Bequest. 



3. Amur-]and (Nchrkorn Coll.). Crowley Bequest. 

 3. Amur-land (Field Coll.). Crowley Bequest. 

 2. Amur-land, 23th April. Crowley Bequest. 



Buteo brachypterus, Hard. 



Buteo brachypterus, Sharps, Cat. Birds B. M. i. p. 183 (1874) ; Milne- 

 Edwards $ Grandidier, Hist. Nat. Madag., Ois. i. p. 84, pi. 301. 

 fig. 5 (1879); Cowan, Proc. R. Phys. Soc. Edin. vii. p. 148 (1882); 

 Sharpe, Hand-l. i. p. 256 (1899) ; Nehrk. Kat. Eiersamml. p. 5 

 (1899). 



The eggs of the Madagascar Buzzard are broad ovals or ellipses, 

 fairly smooth, and without gloss. One of the specimens in the series 

 is plain white ; others are sparingly marked with spots and small 

 blotches of brown of various shades. They measure from 2'02 to 

 2-16 in length, and from 1-67 to 1'76 in breadth. 



6. Madagascar. Key. W. Deans Cowan [P.]. 



1. Madagascar. Crowley Bequest. 



Buteo swainsoni, Bp. 



Buteo obsoletus, Sharpe, Cat. Birds B. M. i. p. 184 (1874). 



Buteo swainsoni, var. swainsoni, Baird, Brewer $ Ridgw. N. Amer. Bird*, 



iii. p. 263 (1874). 

 Buteo swainsoni, Bendire, Life-Hist. N. Amer. Birds, i. p. 236, pi. viii. 



figs. 1-6 (1892) ; Sharpe, Hand-l. i. p. 256 (1899) ; von Ihering, 



Rev. Mus. Pajulist.a, iv. p. 270 (19CO). 



The eggs of Swainson's Buzzard are broad ovals and devoid of gloss. 

 They are white, sparingly speckled and mottled with yellowish 

 brown. One specimen, however, in the series is beautifully streaked 

 and smeared with reddish brown and pale purple. They measure 

 from 2-02 to 2-3 in length, and from 1-67 to 1-8 in breadth. 



1. N. America (Smiths. Inst.). Salvin-Godman Coll. 



3. N. America (Field Coll.). Crowley Bequest. 



4. Saskatchewan district. Mons. Bourgeau [P.]. 



Buteo calurus, Cams. 



Buteo moutanus, Sharpe, Cat. Birds B. M. i. p. 189 (1874) ; Nehrk. Kut. 



Eiersamml. p. 5 (1899). 

 Buteo borealis, var. calurus, Baird, Brewer fy Ridgw. N. Amer. Birds, iii. 



p. 286 (1874) ; Bendire, Life-Hist. N. Amer. Birds, i. p. 213, pi. vi. 



figs. 7 & 8 (1892). 

 Buteo calurus, Sharpe, Hand-l. i. p. 256 (1899). 



The eggs of the Western Red- tailed Buzzard are broad ovals, 

 fairly smooth, and without any gloss. One example is white, boldly 

 spotted and blotched with chocolate-brown. Three others are also 

 white, but they are spotted and smeared, chiefly at the smaller end, 



VOL. ii. s 



