230 GROUS. 



which are small bundles of corn ; near them are set conical tall 

 baskets, with the broader part uppermost ; within the mouth is a 

 small wheel, through which passes an axis, so nicely fixed, as to 

 admit it to play easily, so that on the least touch, it drops down on 

 either side, and again recovers its first situation. The birds first 

 alight on the corn on the poles, and after feeding a little while, fly 

 on the baskets, and on their attempt to settle on their tops, the wheel 

 turns side ways, and they tumble into the trap basket, which is 

 sometimes found half full. 



A.— Tetrao Tetrix Mas var. Mus. Carls, iii. t. 65. 



This is a variety of the male bird; the bill is black; the hindhead, 

 cheeks, and throat black, spotted with white ; neck white, spotted 

 with black ; on the breast a large patch of black ; belly white, here 

 and there marked with black ; vent white ; back blackish, spotted 

 with white and brown ; wings variegated whitish and black ; tail 

 black. 



This beautiful Variety came from Norland, sent among others of 

 the Common Sort to Count Carlson, of Sweden. 



B.— Tetrao Tetrix femina var, Mus. Carls, iii t. 66. Act. Sc. Holm. 1785. 231. 



Bill black; general colour of the plumage dirty white, undulated 

 obsoletely with ferruginous; the feathers of the neck, breast, and 

 back each crossed with three pale ferruginous lines ; feet ferruginous. 

 This Variety was killed among others near Hedemora, in Sweden. 



4— HYBRID GROUS. 



Tetrao Tetrix, Ind. Orn. ii. 636. 3. y. 



Tetrao hybridus, Faun. Suec. No. 201. Id. Ed. Retz. No. 584. Mus. Carls, i. t. 15. 



Grygallus, Rackelhane, Lin. Syst. Ed. vi. p. 28. 



Urogallus minor punctatus, Bris. i. 191. A. Id. 8vo. i. 53. 



Tetrao medius, Tern. Man. p. 287. Id. Ed. ii. p. 459. Id. Pig. # Gall. 8vo. iii. p. 129. 



