176 Mr. J. H. Gurney on three apparently 



latter are only a pale brown, instead o£ a decided black as in 

 the present species. 



The under wing-coverts, which are pure white in M. gui- 

 anensis, are crossed, in the bird now under consideration, 

 with alternate bars of black and white, like the lower breast, 

 except that on these coverts some of the white bars are broader 

 than the black, especially on the feathers overlying the bases 

 of the primaries. 



The following are the principal measurements of the speci- 

 men just described : — 



inches. 



Longest feather of occipital crest 4*5 



Cuhnen without the cere 1'6 



Wing from carpal joint 18-2 



Tail 15-G 



Tarstis 4-1 



Middle toe s.u , 2-1 



I propose to call this fine species Morphnus tcematus, with 

 reference to the transverse bars on the lower breast and ad- 

 jacent parts, which form so conspicuous a feature in the colora- 

 tion of its plumage. 



The annexed figure (PI. III.) will afford a ready means of 

 recognizing this well-marked species. 



The third Raptorial bird that I propose to describe is a 

 very fine Buzzard, which, on account of the variegated cha- 

 racter of its plumage, I would call Buteo pcecilochrous, from 

 the Greek TrotKiXo'Xpoo'i. 



The only example of it that I have seen is in the collection 

 of Messrs. Salvin and Godman, and was received from Mr. 

 Buckley in December 1877, who obtained it at Yauayacu, 

 in the State of Ecuador. It bears a considerable resemblance 

 on its upper surface to the adult female of Buteo erythronotus, 

 and on its under to some examples of Buteo hypospodius ; but 

 in most of its dimensions, and especially in the length of the 

 wing, it exceeds both these species, as will be seen by the 

 following table of measurements in inches and tenths : — 



