282 ORIOLE BABBLER. 



edging produces a scale-like appearance. The mid* 

 die of the body beneath, the edges of the wings, 

 and the under wing-covers are bright yellow. Bill 

 black ; legs pale. 



Total length, 8J inches ; bill rather more than 1 ; 

 wings, 3 1 ; tail, 4 ; tarsus, 1 ; hind-toe and claw, &. 



GREATER WHITE-CROWNED ROCK-THRUSH. 



Petrocincla kucoceps^ SWAINS. 



Above brown ; beneath and lateral tail-feathers rufous ; front, 

 crown, and nape, white ; the feathers with a narrow black- 

 ish margin. 



White-crowned Thrush, Lath. Gen. Hist. v. 101. 

 THE Rock Thrushes, forming the genus Petrocincla, 

 are the representatives of the stone-chat warblers in 

 their own family circle ; and the analogy is so strong, 

 that some recent authors have confounded the one 

 with the other. Like the red-starts (Phcenicura), 

 which they likewise represent, most of the species 

 have rufous on their bodies and tail, with some 

 portions of the head white ; the wings are always 

 rounded, and not, like those of the true thrushes, 

 pointed; the tail also is more or less graduated, 

 while in the genuine thrushes it is even. None of 

 this genus have yet been found in America, al- 

 though it is abundant in Africa and Asia. 



