18Q CLASS AVES. 



# 



colour ; paler beneath ; wings and tail, fine blue. 

 Mongolia. 



Rufous Crow. C. Rufus. Vail. 59. 



Body, and tail-coverts, red-brown ; wings, black, with 

 broad gray stripe ; tail long, cuneiform. 



Paraguan Jay. Lath. Corvus Pileatus. lUig- 

 Acahe. d'Azara. pi. col. 58. Pica Chrysops. Vieil. 

 Gal. 101. 



Top, and sides of head, black, soft, and velvety; 

 above, deep blue ; beneath, yellow ; tail, white tip- 

 ped. Paraguay. 



Garrulus Guhernatriw. Temm. PI. Col. 436. 



Head-tuft like a military plume. M. Temminck 

 makes this a jay. 



Corvus Axureus. Azara. Temm. PI. Col. 108. 



Head and neck, full black ; other parts of body, wings 

 and tail, sky-blue. Paraguay and Brazil. 



Corvus Cyanopogon. P. Max. Temminck. PI. Col. 

 109. 



A long coronal tuft ; forehead, neck, and breast, full 

 black ; belly, thighs, and under wing-coverts, white, 

 or whitish. Brazil.* 



* M. Vieillot admits into this genus — 



Pica AlbicolUs. Vieil. Cormts Caledonicus. Lath. 



La Pie Houpette. 



Pica OUvacea. Vieil. Corvus Olivaceui. Lath. 



Coj-vus Africanus. Lath. 



Pica Vagabonda. Vieil. Coradas Vagabonda. Lath. 



Corvus Zanoe. Lath. 



