Vol. XXIX, pp. 17-18 January 25, 1916 



PROCEEDINGS 



OF THE /'r 



BIOLOGICAL SOCIETY OF WASHINGTON ^-^ 



DESCRIPTION OF A NEW HAZEL GROUSE FROM 



MANCHURIA. 



BY J. H. RILEY. 



[Published by permission of the Secretary of the Smithsonian Institution.] 



In these Proceedings,* under the description of Tetrastes bonasia 

 vicinitas, I mentioned two specimens from Manchuria and pro- 

 visionally referred them to Tetrastes bonasia septentrionalis. Mr. 

 Copley Amory, Jr., has recently presented to the U. S. National 

 Museum a fine series of seven specimens of true Tetrastes bonasia 

 septentrionalis horn near Verkhni Kolymsk, on the upper Kolyma 

 River, N. E. Siberia. A comparison of these with one or two 

 additional specimens not available when I wrote my other paper 

 has shown the Manchurian birds to represent a very distinct 

 form. It may be known as : 



Tetrastes bonasia amurensis subsp. nov. 



Type, U. S. National Museum, No. 236,907, adult male, near I-mien- 

 po, N. Kirin, Manchuria, October 14, 1914. Collected by Arthur de C. 

 Sowerby (orig. No. 243). 



Difiers from Tetrastes bonasia bonasia in having less white over the 

 incipient ruff; in being grayer above (than in the gray phase) with a 

 mere trace of deep hazel in the interscapular region ; and in having the 

 underparts more heavily marked and with a deeper shade of brown or 

 black. 



Description. — Nasal plumes blackish mixed with white and along the 

 culmen with chestnut-brown ; frons, a rictal stripe, lower eye-lid, and a 

 spot behind the eye, white; the white of the frons separated in the 

 middle by deep chestnut-brown and blackish and bordered posteriorly 

 by blackish; top of head a rather deep drab, washed with russet, espec- 

 ially on the nape, and with indistinct irregular blackish bars; inter- 

 scapular region hair brown with blackish and deep hazel bars; lower 

 back and rump mouse gray with more or less distinct shaft streaks and 

 fleckings of blackish and with a rather broad sub-apical band of snufF 

 brown, mostly concealed but showing through enough to give a slight 



• XXVIII, 1915. 161. 



4— Prog. Biol. Soc. Wash., Vol. XXIX. 191G. (17) 



