520 



about it on the portions of the Ebro which I have visited, and strongly suspect that the 

 Guadarrama range is about its northern limit, except as a straggler. It is, however, not a 

 bird that wanders much, and I have no doubt that the specimens obtained near Madrid came 

 from and were bred in the Tagus valley." 



I have not been able to examine specimens of the Imperial Eagle from Portugal ; but it is 

 doubtless the present species that Professor Barboza du Bocage records, under the name of 

 Aquila heliaca, as being found in the sierras of Alemtejo, Villa Vicosa, and Borba. With 

 respect to its occurrence in Africa, Major Irby writes to me that " it has been obtained near 

 Tangier by Favier, in adult plumage, as he describes the white shoulders of a specimen. I have 

 myself seen the immature birds in Morocco." 



I do not possess the eggs of this Eagle, but have examined several in the collections of 

 Mr. Howard Saunders and Mr. H. Seebohm, which do not in any way differ from those of 

 Aquila mogilnik. 



The specimens figured on one Plate are, a magnificent adult female, obtained near Seville in 

 March, and a young female just changing from the young into the adult plumage, both being in 

 the collection of Lord Lilford ; and on the other Plate I have figured, together with the young 

 of Aquila mogilnik, so as to show the difference, one of the young birds sent over alive by Lord 

 Lilford, of which Mr. Keulemans took a careful painting directly it arrived in England. These 

 are also the specimens described, excepting the young male, which is in my own collection, and 

 was shot, together with another in the same stage of plumage, close to Madrid, by Manuel de 

 la Torre. 



In the preparation of the above article I have examined the following specimens : — 



E Mus. H. E. Dresser, 

 a, 6 juv. Madrid, winter of 1866-67 {Manuel de la Torre), b, 6 jun. Seville, November 13th, 1870 {Sanchez), 

 c, $ ad. Seville, October 24th, 1870. 



E Mus. Lord Lilford. 



a, 5 ad. Coto del Rey, Seville, March 23rd, 1872 {L.). b, 6 ad. Coto del Rey, May 1869 (L.). c, $jun. 

 Seville, October 1869. d,juv. Madrid, 1865. e, <$ juv. Cotos, Seville, February 16th, 1870. f,juv. 

 Seville {Sanchez). 



E Mus. Salvin and Godman. 

 a,juv. Madrid, winter of 1866-67 {Manuel de la Torre). 



E Mus. Howard Saunders, 

 a, 2 ad. Coto del Rey, October 29th, 1869 ; b, ? ad. Coto del Rey, April 12th, 1872, shot from nest {Sanchez) . 



