191 
No. 4 has the vertex and erown dark brown ; the throat, collar, and hind neck creamy white with pale 
brown patches on the former ; mantle dark brown, each feather paler at the extremity, but with numerous 
scattered white feathers distinctly vermiculated ; upper surface of wings and tail uniform blackish brown ; 
underparts of the body pale brown mixed with darker, and delicately vermiculated ; under tail-coverts dark 
brown, with a single white feather covered with dusky rays. Bill 6‘5 inches, following curvature 8. 
No. 5 has the crown dark brown, fading away on the nape ; back, rump, and upper tail-coverts white, 
beautifully barred and vermiculated with blackish brown; wings and tail brownish black; throat and 
entire fore neck pure white ; breast and sides covered with freckles and minute vcrmiculate markings of 
grey. Bill 5'5 inches, following curvature 6‘75. 
' No. 6 is similar to No. 4, but having more of the scattered white feathers, covered with vermiculation 
on the shoulders and mantle, presenting a highly variegated appearance ; with a darker crown it has the 
hind neck very pale, and there are no white feathers among the under tail-coverts. Bill 6’25 inches, 
following curvature 7 '75. 
No. 7 (which is probably a female) has very nearly attained the adult plumage, as described above. 
The Avhite of the throat extends to the breast, having only a wash of brown on the lower fore neck ; crown 
and nape uniform brown ; the rest of the body-plumage white ; mantle, back, rump, and upper tail-coverts 
with some plain brown feathers intermixed and closely rayed and vermiculated with brown; the breast is 
thickly freckled or mottled, and the sides of the body, flanks, and under tail-eoverts rayed irregularly with 
brownish grey ; on the lower breast and above the vent these markings fade away, and the abdomen is pure 
white. Bill 5’75 inches, follow'ing curvature 6‘75. 
No. 8. The brown markings have almost entirely disappeared from the neck, there being only a slight 
wash of brown on the nape ; the crown is still brown, but not so dark as in the last. The white face is 
tolerably distinct, the white covering the fore neck and extending to the breast, which is crossed with delicate 
vermiculations and freckles, these becoming fainter towards the abdomen till they fade away altogether ; 
under tail-coverts freckled and vermiculated in their whole extent ; lining of wings and axillaries pure white, 
the innermost of the latter faintly marked and clouded with grey ; the whole of the back, mantle, rump, and 
upper tail-coverts closely vermiculated and freckled with greyish brown, presenting, however, a very different 
appearance to the wavy zigzag lines which adorn another example to be presently described; upper surface 
of wings and tail brownish black. Still there is the distinguishing feature of immaturity in the upper surface 
of the wings and tail being brownish black. Bill yellowish horn-colour. 
No. 9. Crown of the head chocolate-brown, fading away on the nape; forehead, face, sides of the head, 
throat, and neck all round white, but exhibiting a wash of brown on the sides and hind neck ; shoulders, 
mantle, back, rump, and upper tail-coverts white, thickly mottled and vermiculated with greyish brown, the 
markings being larger and more pronounced on the upper tail-covcrts ; entire upper surface of wings and 
tail brownish black, the shafts of the primaries being yellowish white with darkened tips ; underparts white, 
the whole of the breast thickly freckled and speckled, the sides of the body, flanks, and under tail-coverts 
speckled and vermiculated with greyish brown, these delicate markings fading insensibly away towards the 
abdomen ; inner lining of wings and axillary plumes spotless white, excepting only some of the inferior 
plumes, which are faintly freckled and clouded with grey. Irides rich dark brown ; bare eyelids greenish 
purple ; bill white, with a pinky tinge, yellowish horn-coloured at the tips of both mandibles ; legs and feet 
flesh-white, with a tinge of pink. 
No. 10. This fine example, w'hich furnishes the front figure in my Plate of this species, has the general 
plumage pure white ; the vertex, nape, and the whole of the breast obscurely freckled and rayed with dark 
grey ; sides of the body and flanks with delicate vermiculations of the same colour ; shoulders, mantle, back, 
rump, and upper tail-covcrts silky white, covered with narrow transverse zigzag bars of greyish brown, 
producing a very pretty effect ; on the scapulary-coverts these markings become darker and more vcrmiculate 
in character ; the upper surface of wings brownish black, with scattered white markings along the arm, which 
increase and finally become confluent at the inner flexure of the humerus, forming a broad irregular patch 
■with barred markings and freckles of greyish brown ; the primaries are brownish black with yellowish-white 
shafts ; the lining of the wings and the long axillary plumes are pure white, the innermost of the latter 
clouded and freckled with grey. The tail-feathers are parti-coloured, with pure white shafts ; the middle 
tail-feather has its basal half white with produced marginal limbs ; on the three next the white progressively 
