GROUSE. 353 



black cock off. They play most, I believe,, on the ground, 

 but also in trees. The female appears much more difficult 

 to obtain than the male. 



Produce of Black Grouse and Willow Grouse. 

 160. TETEAO HYBEIDUS LAGOPIDES, Nilss. Rip Orre. 



Much more rare than the last. I never saw but one 

 specimen, and this was shot in North Wermland. It appears 

 that no Swedish naturalist has seen this kind in the summer 

 plumage, but the winter dress is as follows : 



Male : black above, watered grey, or the feathers have 

 white edges ; underneath and on the neck and wings white 

 and blackish, with a great black spot on the front of the 

 neck. 



Female : above speckled with white, rusty yellow, and 

 black ; underneath white on the neck and sides, with black 

 and rusty yellow transverse bands. The middle feathers of 

 the tail speckled rusty yellow, the outer ones speckled on 

 the outer edge. 



Tail cloven, with black feathers ; feet white, clothed with 

 feathers ; toes on the outer half annulated, and fringed on 

 the edges ; tarsus about If in. 



Length of male 18 in., of which the tail forms 6 in.; 

 beak black, like that of the willow grouse, but much 

 larger. 



Like the black grouse, the naked red spot over the eye 

 is covered with warts, but like the willow grouse it forms a 

 crenated comb. As in the latter, the feet are feather-clad, 

 but their outer extremity is like the black grouse, covered 

 with horny rings, under which lie a row of horny teeth. Like 

 the black grouse, the tail has eighteen feathers, and the side 

 ones are a little bent, but the tail is much less cloven than 

 in the black grouse, and the middle feathers are broadly 

 edged with white on the tips, as in the willow grouse. In 

 size it stands between the black grouse and the willow grouse. 



Gen. LagopuSj Veill. 

 Beak as in the last ; naked red crest over the eye, rises. 



