33 





5 



the darker and greyer form ; and the two specimens from Abyssinia in the collection of Lord 

 Walden are peculiarly dark, both on the upper surface of the body and also on the underparts, 

 and the tail and wings are darker : but one of the Cashmere birds is nearly as dark as either of 

 these Abyssinian specimens. The following table will show the variation in measurements of 

 specimens from different localities : — 



Culmen. Wing. Tail. Tarsus, 



inch. inches. inches. inch. 



Algeria 0-55-0-7 3-80-3-9 2-80-2-9 0-85-0-9 



Palestine 0-55-0-65 3-70-3-8 2-65-2-7 0-85 



Egypt 0-60-0-67 355-3-82 265-2-7 0-85-0-9 



Abyssinia 0-7 3'65-3-8 2-75-2-85 0-9 



Cashmere 0'55-0'65 3-70-4-0 2-70-2-85 0-85-0-9 



The specimens figured are an adult male from Egypt, of the pale isabelline form, this being 

 the specimen described, and a dark grey bird from Cashmere, both of which are in my collection. 



In the preparation of the above article I have examined the following specimens : — 



E Mm. H. E. Dresser. 



a > 2 > b, c, <3 . Algeria (Fairmaire) . d. Egypt (H. B. Tristram). e,f. Egypt (Taylor), g, h. Egypt (Rogers). 

 i. Egypt (Shelley), k, 3 . Nubia, March 1850 (A. Brehm). I. Cashmere, August 1st, 1870. m,2, 

 n,<3 , o,2 , p, S . Kheura, Cashmere, April 1870 {Henderson), q. Assouan, Nile, January 31st, 1863 

 (Cochrane). 



E Mm. Salvin and Godman. 



a. El Kantara, Palestine, January 1857 (H. B. Tristram), b, <S , c, $. Palestine, January 13th, 1864 (H. B. 

 Tristram) . 



E Mm. Lord Walden. 



a > d , b, <$ . Amba, Abyssinia, August 19th, 1868 (W.Jesse), c, 6 . Jordan, January 12th, 1864 (H. B. 

 Tristram) . 



E Mus. Howard Saunders, 

 a. Egypt (Captain Shelley), b. Algerian Sahara (Loche). 



3x2 



