PETBOPHILA. 143 



Key to the Species.* 



a. Lower plumage of two colours, black 



or bliifj with chestnut. 



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



b'. Chiu and throat blue. 



a". Large white patch on wing. ... P. cinclorkyncha <$ , p. 144. 



b". No white patch on wing P. solitaria S > p. 145. 



b. Lower plumage almost uniformly of 



one colour, barred or squauiated with 



black or brown. 



c\ Upper plumage blue or suffused 



with blue. 



c". Under wiug-coverts and ax- 



illaries blue, narrowly tipped 



white P. cyanus $ , p. 140. 



d". Under wing-coverts and axil- 



laries barred with black or , p soBa) . ia $ f U5 



- TT br0W 1 U ,:••', | P. cyanus $ , p. 146. 



a. Upper plumage olive-brown. l * + r 



e". Back and rump barred ; wing 5. P. erythrogastra 5 > P- 143. 



/". Back plain, rump barred ; wing4. P. cinclorkyncha $ , p. 144. 



6U0. Petrophila erythrogastra. The Chestnut-bellied Roclc- 

 Thrush. 



Tardus erythrogaster, Viyors, P.Z.S. 1831, p. 171 ; Gould, Cent. 



pi. xiii. 

 Petrocincla erythrogastra ( Vig.), Blyth, Cat. p. 164 ; Hovsf. 8,- M. 



Cat. i, p. 185. 

 Orocetea erythrogastra (Vig.), Jercl. B. I. i, p. 514; Ward-law 



Ramsay, P. Z. 8. 1870, p. (577 ; id. Ibis, 1877, p. 463. 

 Petrophila erythrogaster ( Tig?), Hume, N. 8f JS. p. 227 ; id. Cat. 



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



ed. ii, p. 102. 

 Monticola erythrogaster ( Viy.), Seebohm, Cat. B. M. v, p. 325; Oates, 



B. B. i, p. 10. 

 The Chestnut-bellied 'Thrush, Jerd. ; Ningri-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 castaneocottis, Lesson, Rev. Zool. 1840, p. 166, 

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

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

 suggests that the type was a young Monticola saxatilis. 



