PETROPHILA. 143 



Key to tlie Species.* 



a. Lower plumage of two colours, black 



or billy with chestnut. 



a'. Chin and throat black P. erythrogastra <5, p. 143. 



b'. Chin and throat blue. 



a". Large white patch on wing. ... P. cmdorkyncha J, p. 144. 



//'. No white patch on wing P. solitaria cJ, p. 145. 



b. Lower plumage almost uniformly of 



one colour, barred or squamated with 

 black or brown. 

 c'. Upper plumage blue or suffused 



with blue. 



c". Under wing-coverts and ax- 

 illaries blue, narrowly tipped 



white P. cyanus J , p. 140. 



d". Under wing-coverts and axil- 



Uries barred with black or , p Maria ? _ p J45 



d'. Upper plumage olke-brown.' " ' ' P ~ c 'J anUS ? ' *' 146 ' 

 c" . 13ack and rump barred ; wing o. P. erythrogastra $ , p. 143. 

 f". Back plain, rump barred ; wing4. P. cinclorhyncha , p. 144. 



<>'JO. Petrophila erythrogastra. The Chestnut-bellied Rock- 

 Thrush. 



Turdus erythrogaster, Vigors, P. Z. S. 1831, p. 171 ; Gould, Cent. 



pi. xiii. 

 Petrocincla erythrogastra ( Viy.\ Blyth, Cat. p. 164 ; Horsf. $ M. 



Cat. i, p. 185. 

 Orocetes ervthrogastra (FiY/.), Jerd. B. I. i, p. 514; Wardlaw 



Ramsay, P. Z. S. 1876, p. 077 ; id. Ibis, 1877, p. 463. 

 Petrophila erythrogaster ( Viy.}, Hume, N. fy E. p. 227 ; id. Cat. 



no. 352 j Scully, S. F. viii, p. 282 ; Oates in Hume's N. $ E. 2nd 



ed. ii, p. 102. 

 Monti cola erythrogaster ( Vig.\ Seebohm. Cat. B. M. v,p. 325; Oates, 



/>'. B. i, p. 10. 

 The Chestnut-bellied Thrush, Jerd. j Ninyri-pho, Lepch. 



Coloration. Male. After the autumn moult, the lores, sides of 

 the head and neck, and the mantle black, each feather margined 

 with whitish ; remaining upper plumage brilliant cobalt-blue ; 

 lesser and median coverts brown edged with cobalt-blue ; greater 

 coverts and quills brown edged with duller blue ; tail bluish brown ; 

 chin and throat black overlaid with blue; remainder of lower 

 plumage maroon-chestnut. The white edges to the black portions 

 of the plumage soon wear off, and in spring and summer these 

 parts are usually black. 



Female. Dull olive- brown, the feathers of the back, scapulars, 

 rump, and upper tail-coverts with wavy black bars and paler fringes ; 



* I cannot identify Petrocincla castancocollis, Lesson, Kev. Zool. 1840, p. 166, 

 described as occurring in the Himalayas. Seebohm does not refer to this species 

 in his Catalogue of the Thrushes. Stoliczka, J. A. S. B. xxxvii, p. 34 note, 

 suggests that the type was a young Monticola saxatUis. 



