LE VAILLANT 8 CUCKOO. 183 



Size less than that of the common Cuckoo, but 

 the tail is much longer. Upper plumage dark 

 blackish, glossed with different tints of green, ex- 

 cept on the primaries, which are brownish-black ; 

 six of these feathers have a white bar at their base, 

 which forms a patch, and there is a large spot of 

 white at the end of each tail-feather ; the chin, 

 throat, and breast are white, thickly striped with 

 black; the rest of the under plumage is dirty- 

 white ; the tail is long, broad, and graduated, and 

 the fourth and fifth quills are the longest ; bill and 

 feet blackish. 



Total length, 16 inches ; bill, from the gape, 1 T % ; 

 wings, 7 ; tail beyond, 7 ; ditto, from the base, 10; 

 tarsus, 1. 



YELLOW-BILLED COUCAL. 



Zanclostomus flavirostris, SWAINS. 

 PLATE XIX. 



Body above, wings, and tail glossy violet purple ; head, neck 

 and body beneath cinereous ; tail beneath with lilac re- 

 flections ; bill yellow, with a blackish spot in front. 



THE Coucals, although closely allied to the cuckoos, 

 differ from them in some very material points, both 

 of structure and economy. They do not, like the 



