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horse-hair. It is about 120 mm. to 130 mm. in diameter, and its inside depth is from 40 mm. to 
45 mm. The eggs vary much in size and colour, ranging from 27 mm. to 292 mm. in length 
and from 20 mm. to 212 mm. in diameter. The ground-colour is a rich creamy tint with faint 
lilaceous blotches; the eggs are mottled all over with streaks and blotches of madder-brown.” 
Dr. Stejneger has given a complete account of the different plumages of this species (Pr, U.S. 
Nat. Mus. xv. p. 314, 1892), which I herewith transcribe :— 
« Male in nestling plumage (Fuji, Hondo: P. 1. Jouy). Of a blackish slate-colour above, with 
but a very slight suffusion of fulvous, and with very distinct pale buffy shaft-streaks ; tail and wings 
similarly coloured, though more fulvous towards the outer margins of the feathers; the terminal 
spots of ochraceous-buff on the upper wing-coverts are rather large on the middle row, but nearly 
obsolete on the larger ones ; the dusky spots on the underside are large, and the buffy tinge suffusing 
the white ground-colour rather pale. 
« The nestling female differs considerably, being of a dark, dull, tawny olive above, with dusky 
margins to the tips of the feathers, and narrow buffy shaft-streaks, more or less pronounced ; tail 
and wings moré fulvous than in the male, without any slaty cast, and the ochraceous tip to the 
greater upper wing-coverts rather larger and well-defined ; sides, breast, and fore-neck more strongly 
suffused with ochraceous. 
« Young male after the first autumnal moult (Fusan, Corea: Jouy, April 26, 1886). Differs 
very much from the male in corresponding plumage. The entire upper surface is of a dull 
plumbeous or bluish slate-grey, nearly pure on the lower back and wing, and but slightly suffused 
with fulvous on the head and interscapulars, but more strongly so on the secondaries, and especially 
the greater upper wing-coverts, which have the tips narrowly margined with pale ochraceous-buff ; 
sides of head dusky, with but faint fulvous suffusion ; fore-neck and breast very thickly spotted with 
large, blackish, fan-shaped, terminal spots, the visible ground-colour between them being pale 
plumbeous on the chest and lower neck, whitish on the throat and chin, but suffused with 
ochraceous; rest of under surface pure white, tinged with plumbeous on the flanks and with ochraceous 
on the sides of the breast, these parts, besides, spotted with blackish like the breast; under 
wing-coverts ochraceous-rufous. 
« Male after the following (second) autumnal moult (Hakodate: Blakiston). Resembles the above 
in the colour of the back, but the head and face are blackish, and the fore-neck and chest are of a 
uniform dull brownish slate, only the chin being whitish; secondaries and greater upper wing- 
coverts are still strongly washed with fulvous, but the ochraceous wash on the underside has 
disappeared, and the under wing-coverts are slate-grey in the middle, being only broadly margined 
with ochraceous. 
* In the fully adult male (Fuji: Jouy) all traces of fulvous disappear; the black of the head, 
fore-neck, and chest becomes darker and pervades the back, and even the under wing-coverts are 
blackish. 
«Тһе adult female is olive above; the fore-neck, chest, and flanks strongly suffused with 
ochraceous, spotted with black; under wing-coverts bright ochraceous. Zn summer slightly grey 
above, in winter more fulvous.” 
The measurements of an adult pair of birds are as follows :— 
4 ad. Total length 8:5 inches, culmen 0:85, wing 4:8, tail 3:0, tarsus 1:19. 
9 ad. Total length 8 inches, wing 4:5. 
The figures in the Plate represent a male and a female from Yokohama, both in the Seebohm 
Collection. [R. В. S.] 
