102 PHASIANID^. 



2. TETRAOPHASIS. 



Tetraophasis, Elliot, Mo7iog. Plias. i. pi. xxi. (1871). . T. obscuru.s. 



Sexes similar. 



Tail with 18 feathers, wedge-shaped, rather long, about | of the 

 length of the wing. 



1st primary falls between the 8th and 9th ; 4th slightly longest. 



Tarsus in male with a stout s]>ur. 



A large grey patch of downy feathers beneath each wing. 



Axillaries very long, dark grey, tipped with chestnut. 



Range. Mountains of Central and Eastern Thibet, north to 

 Kansu and south to the Mekong Eiver, Western Chiua. 



Key to the Species. 



a. Chin, throat, and fore part of neck dark chestnut . obscurus, p. 10:2. 



b. Chin, throat, and fore part of neck pale fawn- 



colour szechenyii, p. 103. 



1. Tetraophasis obscurus. 



Lophophorus obscurus, Verr. N. Arch. Mas. Bull. v. p. 33, pi. vi. 

 (186y) I Moupin]. 



Tetra "igallus (Tetraophasis) obscurus, Gray, Iland-l. B. ii. p. 275 

 (1870). 



Tetraophasis obscurus, Sivinh. P. Z. S. 1871, p. 399 ; Elliot, Mon. 

 Fhas. pi. xxi. [text] (1872) ; Gould, B. Asia, vii. [text] pi. 44 

 (1874); Sclut. Ibis, 1874, p. 169; Prjev. Mongolia, ii. p. 129 

 (1876); id. in Powleys Orn. Misc. ii. \>. 429 (1877) [Kansu]; 

 Dedit. J.f. O. 1886, pp. 538, 540 [Koko-nor and Hoangho R.]. 



Adult male. Top and sides of the head dark grey, each feather 

 with a narrow darker shalt-stripe ; nape, sides of the neck, and 

 mantle dull olive-brown, some of the feathers, especially on the 

 lower parts of the mantle, with a blackish spot at the end of 

 the shaft ; rest of the back and rump brownish grey. Outer 

 secondaries, scapulars, and wing-coverts olive-brown, each with a 

 light terminal band shading into buff on the outer feathers. Pri- 

 maries and rest of secondaries daik brown, the latter tipped and 

 slightly margined on the outer web with buff. Chin, throat, and 

 fore part of neck daik chestnut, indistiuctly margined all round with 

 buff. Chest and upper part of breast grey, each feather with a 

 black shaft terminating in a black spot ; rest of breast and belly 

 grey mixed with buff; sides and flanks brown tipped with buff, some 

 of the feathers with ciiestnut blotches on the outer web ; under tail- 

 coverts chestnut, widely tipped with white. Upper tail-coverts and 

 centre pair of tail-feathers pale greyish brown, vermiculated with 

 black and slightly tipped with white ; second and third pairs more 

 widely tipped with white and mixed with black ; remaining pairs 

 black, with the last fifth white and the basal part slightly mottled 



