278 
the breast, abdomen and under tail-coverts bright yellow ; bill black ; 
feet bluish black. 
Total length, 5 inches; bill, §; wing, 2; tail, 21; tarsi, 2. 
Hab. Cape York, Northern Australia. 
In the possession of the Zoological Society. 
PTILOTIS FILIGERA. (Aves, Pl. XXXIV.) 
Upper surface, wings and tail rich olive-brown, with numerous small 
marks of greyish white on the apical portion of the nuchal feathers ; 
the wing-coverts broadly, and the remainder of the feathers narrowly 
edged with brownish buff; from the gape beneath the eye a streak 
of white; ear-coverts blackish grey; from the centre of the lower 
angle of the ear-coverts a very narrow streak of silky yellow, which, 
proceeding backwards, joins the line of white from beneath the eye ; 
throat brownish grey ; under surface sandy buff, the feathers of the 
breast and the middle of the abdomen with lighter centres ; bill olive- 
black ; naked space beneath the eye yellow ; legs and feet slate-colour. 
Total length, 73 inches; bill, 1; wing, 4; tail, 3; tarsi, 2. 
Hab. Cape York, Northern Australia. 
Remark.—The young is destitute of the white marks on the nape, 
and has the under surface more rufous, and without the lighter centres. 
This species is somewhat allied to Ptilotis unicolor. 
In the collection of the Zoological Society. 
Arses Kaurt. 
Small spot on the chin, crown of the head, lores, line beneath the 
eye, ear-coverts, broad crescentic band across the back, and a broad 
band across the breast, deep shining bluish black; wings and. tail 
brownish black ; throat and a broad band across the back of the neck 
white ; lower part of the back and abdomen white, the base of the 
feathers black, which, occasionally showing through, give those parts 
a mottled appearance; bill bluish horn-colour, becoming lighter at 
the tip; feet black. 
Total length, 63 inches; bill, ; wing, 31; tail, 31; tarsi, 3. 
Hab. North coast of Australia. 
Remark.—I embrace this opportunity of paying a just compliment 
to my friend Dr. Kaup, whose ornithological labours are so well known 
to all naturalists: the compliment is the more appropriate, as he is at 
this time engaged in preparmg a monograph of the Muscicapide, to 
which family this bird belongs. 
Genus Pycnoprti.us. 
Gen. Char.—Bill shorter than the head, slightly notched at the 
tip ; culmen inclining downwards; nostrils basal, rather large, and 
partially covered with an operculum ; base of the bill beset with a few 
fine bristles ; wings short, very concave, round in form, the first quill 
very short, the second, third, fourth and fifth gradually increasing in 
length, the sixth, seventh, eighth and ninth equal and the longest ; 
tail moderately long, rounded, the feathers soft and yielding ; tarsi 
