66 Lloyd's natural history. 



Tympanuckiis pallidicinctus^ Ridgw. P. U. S. Nat. Mus. viii. 

 p. 355 (1885); Bendire, Life Hist. N. Am. B. p. 96 

 (1892); Ogilvie-Grant, Cat. B. Brit. Mus. xxii. p. 80 

 (1893). 

 Adult Male. — Distinguished by the longer feathers of the 

 neck-tufts, these being parallel-edged and square-tipped ; chest- 

 feathers white, with three broivn bars, narrower than the white 

 interspaces. Total length, 15 inches; wing, 8*3; tail, 3-5; 

 tarsus, i*6. 



Adult Female. — Differs from the male in having the neck- 

 tufts much shorter, and, as in the female of T. americanus, the 

 outer tail-feathers are barred with buff. Measurements a trifle 

 less than those of the male. 



Range. — South-western Kansas, Western Indian Territory, 

 Western, and probably Southern, Texas. 



The range of this smaller and paler-coloured species is still 

 imperfectly known, but its nesting habits appear to be very 

 similar to those of T. americanus. 



THE SAGE GROUSE. GENUS CEXTROCERCUS. 



Centrocercus, Swains. Faun. Bor.-Amer. ii. pp. 342,496(1831). 



Type, C. urophasianus (Bonap.). 



Toes naked and pectinate along the sides ; tail long and 

 Pheasant-like, composed of twenty wedge-shaped pointed fea- 

 thers, the outer pair being less than two thirds the length of 

 the middle pair. The males have an inflatable air-sac on each 

 side of the neck. Only on : species is known. 



I. THE SAGE GROUSE. CEXTROCERCUS UROPHASIANUS. 



Tetrao urophasianus, Bonap. Zool. Journ. iii. p. 213 (1828); 



id. Amer. Orn. iii. p. 55, pi. xxi. fig. 1 (1828). 

 Tetrao {Centrocercus) urophasianus, Swains. & Richards. Faun 



Bor.-Amer. ii. p. 358, pi. 58 (1831). 





