2o8 
allen’s naturalist’s library. 
dotted, and in some instances blotched with purplish-brown, 
and having tolerably distinct underlying spots of violet-grey. 
In some clutches the purplish-brown markings are so thickly 
collected together as to cloud the larger end of the egg, and 
there is very seldom an attempt at a ring round the latter. 
Axis, o'6-o"] inch ; diam., o'5-o's6. 
THE WILLOW-WARBLER. PI-1YLLOSCOPUS TROCHILUS. 
Motacilla trockilus , Linn., Syst. Nat., i., p. 338 (1766). 
Phyllopneuste trochilus, Macg., Br. B., ii., p. 371 (1839). 
Phylloscopus trochilus , Newt. ed. Yarr., i., p. 432 (1873) ; Dres 
ser, B. Eur., ii., p. 491, pi. 76, fig. 2 (1879) ; Seeb., Cat. 
B. Brit. Mus., v., p. 36 (1881); id. Hist. Br. B., i., p. 430 
(1883) ; B. O. U. List Br. B., p. 16 (1883) ; Lilford, Col. 
Fig. Br. B., pt. v. (1887) ; Saunders, Man., p. 63 (1889). 
Adult Male. — General colour above olive-greenish, somewhat 
clearer on the rump; the head like the back; lesser wing- 
coverts like the back, the rest of the wing-coverts and quills 
dusky brown, edged with the same colour as the back; tail 
dusky brown, externally with narrow greenish margins, and 
ashy-white edges to the inner webs, with, in freshly moulted 
specimens, a narrow whitish margin extending to the tips of 
the feathers ; head like the back, with a tolerably distinct eye- 
brow of dull sulphur-yellow; eyel d also yellow ; lores and sides 
of face dull olive-greenish ; sides of neck like the back ; throat 
and fore-neclc ashy-whitish, with streaks of pale sulphur-yellow, 
with which the feathers are margined; breast and abdomen purer 
white, the under tail-coverts also whitish, but washed with 
yellow near the vent; the flanks inclining to olive buff, and 
slightly washed with yellow ; thighs yellow; under wing-coverts 
and axillarles sulphur-yellow, as also the edge of the wing; 
quills dusky below, ashy-whitish along the inner margin ; bill 
dark brown, with a slkhtly paler base to the lower mandible ; 
feet and claws brown ; iris hazel. Total length, 4 - 8 inches ; 
culmen, 0-5 ; wing, 27 ; tail, 2’i ; tarsus, o‘S. 
Adult Female. — Similar to the male. Total length, 4-6 inches; 
wing, 2-45. 
Young. — After the autumn moult the young birds are much 
