106 Mr. II. E. Dresser's Notes on 



had yellow eyes ; but it is possible that the iris turns from the 

 white of the young plumage to yellow, and then to red. 



" In the young bird the dove-blue colour of the adult is 

 replaced by brown, the feathers being margined with yel- 

 lowish; the underparts are marked with large elongated 

 marks. In this plumage it differs from A. brevipes not only in 

 having a white iris, but also in having the breast and abdomen 

 similarly marked, whereas in A. brevipes the breast is marked 

 with square blotches ; but, besides this, the short wings and 

 long tail of A. cenchroides, as well as the many bands on the 

 tail, render it easily recognizable. The measurements of A. 

 cenchroides are : — Male, total length 13' 5- 1 3" 7 inches, extent 

 23-23-5, wing 7-7-4, tail 6-1, culmen 0-8, tarsus 2-15-2-2, 

 middle toe 1-3-1-4. Female, total length 15-5-16-3, extent 

 26-6-28, wing 8-1-8-5, tail 6-8-7-1, culmen 8-25-9, tarsus 

 2-15-2-2, middle toe 1-3-1-4. 



" In Turkestan we found this species during migration at 

 Aulje-ata and Chimkent (and the Kirghis say that it also 

 occurs in the forests), near the Syr-Darja, Chu, and Talass.^^ 



25. Falco sacer, Gm.; SevertzoflF, p. 63. 



Horizontal range. Occurs in districts I., II., III., and IV. 

 during migration, and has been observed during the winter 

 in districts III. and IV. 



Vertical range. Is met with during migration in districts 

 1, 2, and 3, and during the winter in district 2. 



2Q. Falco babylonicus, Gurney. 



Falco tscherniaievi, sp. nov., Severtzoff, pp. 63 & 114. 



Horizontal range. Is found during migration and breeds 

 also in districts I., II., and III. 



Vertical range. Breeds in district I., is found during mi- 

 gration in districts 2 and 4, and may possibly breed in the 

 latter, and is met with in summer, and perhaps breeds in 

 district 3. 



Mr. Severtzoff refers this bird to the species figured by 

 Gould in part xx. ' Birds of Asia,' and with a query to F. 

 babylonicus, Gurney, with which I believe it to be identical. 

 The specimen on which he founded his species was obtained 



