68 



LIST OF DIURNAL BIRDS OF PREY, 



Nomenclature, with references 

 to Sharpe's Cat. vol. i. 



BUTEO. 



19. pennsylvanicus 



(^coiitinued). 



Eeferences 

 to J. H. G.'s 

 Notes in the 

 ' Ibis ' (years 



and pages). 



20. swainsoni, Bon. 

 p. 184' . 



1876, 234 



to 230 



Sliscellaueous References. 



Number 

 of speci- 

 mens in 

 Norwich' 

 Museum. 



Baird, Brewer, and Ridg- 

 way, Land Birds of N 

 America, vol. iii. pp. 256, 

 259. 



Ridgway, on the Subgenus 

 Graxirex, p. 116. 



Lister, Ibis, 1880, p. 43. 



Swainson and Richardson, 

 Faun. Bor.-Am. pt, 2, 

 p. 47, pL 27 ( 2 adult);. 



Cassin, Birds of California 

 &c. p. 198, pi. 31 (upper 

 figure immature, lower 

 melanistic)^ , and p. 25 

 pi. 41 (immature)''. 



Baird, Cassin, and Law- 

 rence, Birds of N. Ame- 

 rica, p. 19, pi. 12 ( S 

 adult), pi. 13 ( 2 adult), 

 and pi. 15. fig. 2^ 



Baird, Brewer, and Ridg- 

 way, Land Birds of N. 

 America, vol. iii. pp. 256 

 263. 



1 There called Buteo obsoletus. 



2 There called Buteo vulgaris. 



^ There called Buteo insignatus, 



* There called Buteo hairdii. 



^ The specimen here figured is the type of Buteo oxyptenis, Cassin ; Mr. Eidgway, 

 in replv to an inquiry which I made respecting it, writes as follows : — " It has been more 

 than ten years since I saw the specimen in question ; but my recollection of it is that it 

 agreed very exactly with a specimen from Costa Eica and another from Buenos Ayres, 

 both in the National IMuseiun collection, and both of which are unquestionably young 

 of typical B. swainsoni. I will not be positive as to the number of primaries emargi- 

 nated, but I am almost sure there were only three. The specimen is of rather small 

 dimensions, but I think not smaller than some young males of B. su<ainsoni, which 

 varies much in size, irrespective of locality, though, as a rule, southern specimens are 

 smaller than northern ones." 



