2?A 



GALLING. 



Family TETRAONID^E. (Bonaparte.) 



Genus Pterocles. ( ' Temminck.J 



Generic Characters. — Beak medium sized, compressed, slender 

 in some species; upper mandible straight, but curved near the 

 point; nostrils basal, half closed by a membrane, covered by 

 the feathers of the forehead, open below. Feet with short 

 toes, the under one hardly developed and articulated high up 

 the tarsus; the three front toes united to the first articulation, 

 and edged with a membrane; the front of the tarsi covered 

 with small very short feathers, the rest naked. Claws very 

 short, the hind one sharp edged, those in front obtuse. Tail 

 conical; in some species the two middle feathers are elongated 

 in a thread-like manner. "Wings long, terminated in a point, 

 the first primary the longest. 



PIN-TAILED SAND GBOUSE. 



Pterocles alchata. 



Pterocles alchata, Stephens. 



" setarius, Temminck. 



Tetrao alchata, LiNNiEtrs. 



" caudacutus, Gmelin. 



" chala, Pallas. 



JEnas cata, Vieillot. 



Ganga cata, Or the French. 



Chata-Flughuhn, Of the Germans. 



La Grandule, Savi. 



