On three apparently new Raptorial Birds. 171 



Geopelia striata. 



Geopelia striata (L.), Salvad. /. c. p. 298; Tweedd. t. c. 

 p. 322. 



Gallus varius. 



Gallus varius (Shaw), Elliot, Mon. Phasianidse, ii. pi. xxxv. 



A hen of this Jungle-Cock. 



XIII. — Note upon Three American Raptorial Birds apparently 

 new to Science. By John Henry Gurney. 



(Plate III.) 



I am indebted to the kindness of Messrs. Salvinand Godman 

 for the opportunity of describing, from specimens in their 

 collection, three species of American birds of prey which, 

 after careful examination by Mr. Salvin and myself, appear 

 to us to be new to science. 



The first of these, of which the Norwich Museum also pos- 

 sesses a specimen, is a Micrastur from the forest-region of 

 Panama, which resembles in its dimensions and conformation 

 Micrastur melanoleucus^ [Yieill.) = brachypterus (Temm.), 

 but differs from that species in the coloration of the under- 

 parts, and also in the total absence, both in the immature 

 and in the adult plumage, of any nuchal collar, either white 

 or rufous. 



The specimen in the Norwicli Museum is wholly in imma- 

 ture plumage ; that belonging to Messrs. Salvin and Godman 

 is in partially immature dress, but has acquired a sufficient 

 portion of the adult plumage to indicate the character of the 

 fully adult dress ; unfortunately, in neither instance has the 

 sex been recorded. 



The following are the principal measurements of the two 

 specimens, in inches and tenths. 



* I agree with Mr. Ridgway in considering that the specific name 

 nielanoleucus is probably that which is most correctly applicable to this 

 species (vide Proc. Ac. Nat. Sc. Philadelphia, 1875, pp. 470, 484, also 

 Ibis, ]87o, p. 8). 



