The Zoologist— September, 1870. 2291 



Adult. — High breeding plumage. Bill whitish or yellowish, culmen 

 and base of both mandibles abruptly black ; legs and feet anteriorly 

 apparently whitish or yellowish ; posteriorly, with both surfaces of the 

 webs, black. Head all around, and throat, black ; pure and intense 

 above, on the sides below, chin and throat, tinged with fuliginous 

 brown. A conspicuous stripe of pure white beginning over each eye, 

 and extending backwards over the sides of the occiput, connected 

 across the nape by some white feathers, and spreading on the sides 

 and back of the neck, as a large disconnected series of trenchantly 

 defined white streaks. Trace of white on each eyelid. Entire upper 

 parts clear dark plumbeous, blackening on the upper tail-coverts and 

 tail. Upper surface of wings the same, or rather darker, the edge of 

 the wing all along from the elbow, and the exposed parts of primaries, 

 blackish; entire under surface of wings white, except just along the 

 edges, where it is mottled with dusky ; the basal portion of the inner 

 webs and shafts of primaries whitish; secondaries like the wing- 

 coverts, or rather darker, their bases whitish. Sides of the body under 

 the wings pure velvety black, in marked contrast to the clear plum- 

 beous of the upper parts and white of the lower. These black feathers 

 are posteriorly greatly elongated, reaching quite to the tail, and over- 

 lying the sides of the rump and the flanks, which latter, however, are 

 seen to be pure white on raising the elongated superincumbent feathers. 

 This black along the sides extends anteriorly in front of the wings, 

 and, still strongly contrasted with the plumbeous of the interspcaulars, 

 continues on as a band quite to the nape, which it crosses to become 

 confluent with its fellow of the opposite side. On the sides of the 

 neck it is thickly marked with the pure white streaks already described. 

 The fuliginous black of the chin and throat is continuous with that of 

 the sides of the head as far as the auriculars ; further on it merely 

 extends as a point along the middle of the throat, being separated 

 from the black of the sides of the nape by a large white area, an 

 extension to the auriculars of the white which is the colour of 

 the whole under parts, except the sides under the wings, as already 

 described. 



Length 9-50 to 10*50; extent 1675 to 1825; wing 5-50 ; tail 1'60; 

 bill along culmen '60, along rictus 120, along gonys "40, depth at 

 base '30, width -20; tarsus 1*00; middle toe and claw r25, outer do, 

 1-15, inner do. 100. 



Younger. — Bill and feet as above described. "Iris brown," (label). 

 Upper parts as in the adult, but darker, the plumbeous being obscured 



