1. GEOCICHLA. 181 



Cichloselvs sibiricus {Pall.), Bp. Cat. Parzud. p. 5 (1856) ; Gould, B. 



Gt. Br. ii. pi. xl. (187;j). 

 Oreocincla sibirica (Pall.), Jaub. et Barth.-Lapomm. liich. Orn, 



p. 202 (1859). 

 Oreocincla inframarginata, Blyth, J. A. S. Beng. xxix. p. lOU (1800) ; 



Beamin, Ibis, 18(57, p. 325 ; Blyth, Ibis, 1868, p. lo2 ; Ball, Strut/ 



Fcath. 1873, p. 70. 

 Turdus inframarginatus (Blyth), Gray, Hand-l. B. i. p. 254. no. 3694 



(1869). 

 Geocichla mutabilis (Teinm.), S. MiiUer,fide Blyth, Ibis, 1870, p. 167. 

 Mei'ula sibirica (Pall.), I)yb. Journ. Orn. 1872, p. 437 ; Tacz. Juurn. 



Orn. 1674, p. 335. 

 Tiiidulus sibiricus (Pall.), Hume, Stray Feath. vi. p. 255 (1878). 

 Turdus, sp. inc., Blakiston Sf Pryer, Ibis, 1878, p. 241. 



In the adult male in spring plumage the general colour of the 

 upper parts is dark slate-grey, each feather slightly darker on the 

 margin ; lores, ear-coverts, and head approacliing black ; a very 

 conspicuous pure-white eye-stripe extending to the nape ; inner- 

 most secondaries dark slate-grey ; quills dark brown, the outer webs 

 margined with dark slate-grey ; tail dark brown, several of the out- 

 side feathers tipped with white, the outside feather on each side 

 very broadly so. Underparts dark slate-grey, a few feathers in the 

 centre of the belly white ; under tail-coverts dark slate-grey, tipped 

 with white ; axillaries white, with slate-grej' tips ; lower under 

 wing-coverts white, with slate-grey bases; basal portion of the 

 secondaries and many of the primaries white ; inner margin of 

 quills scarcely paler than the rest of under surface. Eill dark 

 brown above and below. Wing with the third primary slightly the 

 longest, second primary next longest, bastard primary 0-6.5 to 0-5 

 inch. Tail with the outside feathers 0-2 inch shorter than the longest. 

 Length of wing 4-9 to 4-4 inches, tail '6o to 3-1, culmen 0-93 to 

 0-81, tarsus 1-23 to 1-12. 



The female diticrs from the male in haviug the upper parts olive- 

 brown, shading into dull slate-grey on the rump and upper tail- 

 coverts ; eye-stripe buff, shading into white on the nape ; wings and 

 wing-coverts russet-brown ; underparts white, shading into brown 

 on the flanks and into buff on the breast, each feather tipped with 

 olive-brown. Males of the year are suffused with brown on the 

 head and wings, and have ochraceous tips to the greater and some 

 of the median wing-covcrts ; the chin and throat are also suffused 

 with ochraceous, and the throat and breast are barred. Females of 

 the year have no trace of slate-grey on the upper parts, and have 

 the greater and median wing-coverts tipped with ochraceous, like 

 the male. Younr/ in first plumnrie are unknown. 



The Siberian Ground-Thrush breeds in the valleys of the Tcnesay 

 and the Lena, between lat. 67° and 68°, and also near Yokohama 

 in Japan. It winters in China, Burma, Sumatra, and Java, and 

 has once occurred on the Andaman Islands. 



Zoological Society. 

 Zoological Society. 

 Zoological Society. 

 Zoological Society. 

 Capt. Wardlaw-Kamsay. 



