Falco babylonicus and Falco barbarua. 161 



Museum contains an adult female purchased from M. Par- 

 zudakij of Paris, who asserted that it was obtained in Abys- 

 sinia; and I am also now disposed to think that the Nubian 

 Falcon in the British Museum, which I referred (P. Z. S. 

 1878j p. 2) to F. barbarus, is in reality a male in the second 

 yearns plumage of F. babylonicus* . 



With regard to the western range of F, babylonicus, I may 

 also refer to the translation by Mr. Dresser in ' The Ibis/ 

 1875, pp. 106, 107, of some valuable notes by the late Prof. 

 Severtzoff as to the breeding of this species in Turkestan ; 

 but the supposed ''young male'^ from Chimkent there men- 

 tioned would seem, by its wing-measurement, either to have 

 been incorrectly sexed, or to be an immature example of 

 some allied species. In the same article Severtzoff records 

 a specimen taken in Persia and two " taken from the nest 

 on an island in the Volga." 



The following measurements have been taken by myself 

 from Falcons which I believe to be referable to F. babylonicus, 

 and which have been marked as males by the collectors ; they 

 are all adult birds, and all preserved in the British Museum 

 at South Kensington, except where I have mentioned the 

 contrary : — 



Middle 

 Wing. Tail. Tarsus, toe, s. u. 

 in. in. in. in. 



From Eastern Narra, Sind, collected 



by Mr. Doig (immatiu-e in change) 10'8o 5"75 1-75 1-85 

 From Hyderabad, Sind, collected by 



Col. Butler 10-95 5-50 1-75 180 



From Eastern Narra, Sind, collected 



by Mr. Doig 1100 5-40 170 170 



From Cutch, collected by Dr. Sto- 



liczka ll-lo 5o0 170 170 



From Eastern Narra, Sind, collected 



by Mr. Doig ll-2o 5-25 1-70 1-75 



From Hyderabad, Sind, collected by 



Col. Butler 1125 5o0 170 1-90 



From Hyderabad, Sind, collected by 



Col. Butler (immature in change) 11-25 5*75 170 180 



* This specimen measures as under: — Wing ll'lo inches, tail oJO, 

 tar.sus 1-65, middle toe s. u. 1-80. 



SER. V. VOL. V. M 



