GEOCICHLA SIBIRICA (Рап). 
SIBERIAN GROUND-THRUSH. 
Turdus sibiricus, Pall. Reis. Russ. Reichs, iii. p. 694 (1776). 
White-browed Thrush, Lath. Gen. Syn. ii. pt. 1, p. 31 (1783). 
Turdus leucocillus, Pall. Zoogr. Rosso-Asiat. i. p. 450 (1811: є). 
Turdus bechsteini, Naum. Уба. Deutschl. ii. p. 310, pl. Ixix. fig. 2 (1822: 2). 
Turdus atrocyaneus, Homeyer, Isis, 1843, p. 604. 
1 Merula leucogaster, Blyth, J. А. S. Beng. xvi. p. 149 (1847). 
Turdus mutabilis, Bp. C. R. xxxviii. p. 5 (1854, ex Temm. MSS.). 
Cichloselys sibiricus, Bp. Cat. Parzud. p. 5 (1856). 
Oreocincla sibirica, Jaub. et Barth.-Lapomm. Rich. Orn. p. 202 (1859). 
Oreocincla inframarginata, Blyth, J. A. S. Beng. xxix. p. 103 (1860). 
Turdus inframarginatus, Gray, Hand-l. Birds, i. p. 254. no. 3694 (1869). 
Geocichla mutabilis, Blyth, Ibis, 1870, p. 167. 
Merula sibirica, Dybowski, J. f. O. 1872, p. 437. 
Turdulus sibiricus, Hume, Stray Feathers, vi. p. 255 (1878). 
Geocichla sibirica, pt., Seebohm, Cat. Birds Brit. Mus. v. p. 181 (1881). 
4. С. supercilio albo conspicuo : supracaudalibus concoloribus schistaceis : axillaribus albis, nigricanti-schistaceo 
terminatis. 
9. С, supercilio ochraceo : supracaudalibus brunneis : axillaribus albis, bruuneo terminatis. 
Tue SIBERIAN GROUND-THRUSH was discovered in Dauria by Pallas, and was described by him in 1776. 
For some reason or other he changed the name to Turdus leucocillus in 1811. Ав time went on Ше 
species gathered new titles from European naturalists, who described it from specimens as they occurred 
in various western localities. "Thus Naumann in 1822 associated an adult male of Merula atrigularis 
with an immature male of Geocichla sibirica from the Harz Mountains, and he figured and described 
them as Turdus bechsteini (У ба. Deutschl. іі. р. 310). This error he corrected thirty years afterwards 
(Naum. Vóg. Deutschl. xiii. p. 848). In 1828 a female of Geocichla sibirica, obtained in Upper 
Silesia, was erroneously recorded as Zurdus auroreus, a name given by Pallas to Geocichla пеша 
(cf. Gloger, Isis, 1828, p. 1041). An adult male bird, captured on the island of Rügen in the 
Baltic on the 156 of October, 1842, was described as Zurdus atrocyaneus by Von Homeyer (Isis, 
1843, p. 604). 
Examples in the Leyden Museum from Java appear to have been labelled Turdus mutabilis by 
'Temminck, and this name first appeared іп 1854 when Bonaparte mentioned it (С. В. xxxviii. p. 5). 
In 1860 Blyth refers to the species as Geocichla mutabilis of Salomon Müller in the Leyden Museum, 
and this is doubtless the origin of 'Temminck's name. А female of this Ground-Thrush from the 
Andaman Islands was described in 1860 by Blyth (J. A. S. Beng. xxix. p. 106) as Oreocinela 
inframarginata. 
Lastly, the name of Merula leucogaster of Blyth (J. A. S. Beng. xvi. p. 149) probably belongs to 
the present species, It is founded on one of Griffith's drawings from Assam, but the description is 
