565 



should say, very nearly a hundred individuals. They were seated on the fences adjoining the 

 post-road and on the road itself; and though I got out of my carriage and carefully examined 

 the locality, I could find no carrion or any thing to account for the unusual assemblage. 



The eggs of this Raven are very distinct from those of C. corax, being very much smaller 

 than any common Raven's eggs I have ever seen — in fact, scarcely as large as the general average 

 of those of C. corone and C. comix. I am indebted to Colonel Irby for a clutch of five taken by 

 him at Tangier, which resemble those of the Carrion-Crow, but are much more blue and brighter 

 in colour, and measure from lf^ by l- 4 % to Iff by 1^% inch in size. 



I do not purpose giving a coloured Plate of this species, as it is so difficult to show the 

 difference between it and closely allied species in that manner ; but when giving a short review 

 of the Corvidce a Plate with the heads of this and other species, showing the comparative 

 differences in size, will be issued. 



The specimen described is one presented to me by Colonel H. L. Irby, who shot it at 

 Tangier. 



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



E Mus. H. E. Dresser, 

 a, ? . Tangier, April 26th, 1874 {H. L. Irby). 



E Mus. Lord Lilford. 

 a, b, 6, c, ? . Tangier, April 1874 (H. L. Irby). 



E Mus. Sahin and Godman. 

 a, 6. Santa Cruz, Teneriffe, April 18th, 1871 (F. D. Godman). 



