16 



ON A SPECIES 



I have no doubt that the bird above described belongs to the genus 

 Aquila of Vigors (Apud Shaw's Zoology, XIII. 2, 15.) and I suppose that 

 the slight depression of the ridge of the upper mandible of its bill towards 

 the base is what that writer means by the " beak some\vhat angular 

 above" of his generic character. But " nostrils rounded'' of the same 

 character much less accurately describes the nostrils of our bird, than the 

 equally short and technical term " lunated"— to which, however, I have 

 preferred the comparison to the external rim or outline of the human ear. 



Whilst I notice this deviation from the generic character as laid down 

 by the work I have followed, I may add, that I conceive it to be unimpor- 

 tant, and that the bird unquestionably belongs to the genus Aquila. The 

 species is probably new ; since it is not to be found among the nine 

 described in the vast and recent work already frequently alluded to. The 

 dimensions and weight of our bird are as follow : 





Feet. 



Inches. 







8 







H 







H 







2 







4, 







H 







H 







11 







•^4 



Weight, 7 lbs. 



