206 BULLETIN 50, UNITED STATESTSISTIUJSrsrr-JHtJo^ui;.^ 



[Pedioecetes] phasianellus campisylvicola Baillie and Harrington, Contr. Roy. 



Ontario Mus. ZooL, No. 8, pt. 1, 1936, 29 in text.— Snyder, Trans. Roy. Can. 



Inst., xxii, 1938, 186, in text (w. Rainy River district, Ontario). 

 P[edioecetes\ plhasianellus] campisylvicola Snyder, Auk, Ivi, 1939, 184, m text 



(crit.). 



Genus TYMPANUCHUS Gloger 



Tympanuchus Gloger, Hand- und Hilfsbuch, 1842 (1841), 396. (Type, by monotypy, 



Tetrao cupido Linnaeus.) 

 Cupidonia Reichenbach, Av. Syst. Nat. Vog., 1853, xxix. (Type, by monotypy, 



Tetrao cupido Linnaeus.) 

 Cupidinea (emendation) Coues, Check List North Amer. Birds, ed. 2, 1882, 94. 

 Bonasa Stone, Auk, xxiv, April 1907, 198 (thought to be transferable to Tetrao 



cupido Linnaeus under the "first species" rule). 



Medium-sized terrestrial grouse (length about 381-483 mm.), with 

 tail decidedly less than half as long as wing, rounded, the rectrices ( 18) 

 broad, rigid, and with broadly rounded tips, the longer under tail coverts 

 reaching to or slightly beyond its tip; sides of neck with an inflatable 

 air sac (much less developed in females), overhung in adult males by 

 a tuft of long, rather narrow, rigid feathers with tips obtusely pointed 

 or narrowly rounded. 



Bill relatively small (less than one-third as long as rest of head), its 

 depth at frontal antiae about equal to its width at same point; culmen 

 rounded to indistinctly ridged; rhamphotheca completely smooth; maxil- 

 lary tomium moderately concave or arched, smooth. Wing moderate, 

 strongly concave beneath, the longest primaries exceeding longest sec- 

 ondaries by more than one-fourth to nearly if not quite one-third the 

 length of wing; third to fifth primaries longest, the first (outermost) 

 nearly equal to, sometimes longer than, seventh; outer primary moder- 

 ately bowed or incurved, the four or five outer ones distinctly emarginate 

 or sinuate basally. Tail decidedly less than half as long as wing, rounded, 

 the rather broad and rigid rectrices (18) with broadly rounded or sub- 

 truncate tips. Tarsus one-fifth to considerably more than one-fifth as 

 long as wing, completely clothed in winter with soft hairlike feathers ex- 

 cept on heel and part of planta tarsi, in summer with short feathers only 

 on acrotarsium, the planta tarsi covered with small and rather indistinct 

 roundish and hexagonal scales; middle toe slightly shorter to about as 

 long as tarsus; lateral toes about equal, reaching to about penultimate 

 articulation of middle toe ; hallux about as long as second phalanx of mid- 

 dle toe; upper surface of toes with a continuous series of transverse 

 scutella, bordered along each side by a row of smaller subquadrate scutella, 

 edged (in winter) with a fringe of horny pectinations; claws moderate 

 in size, rather slightly curved, moderately acute or slightly blunt. 



Plumage and coloration.- — Feathers of crown elongated, decurved, form- 

 ing, when erected, a conspicuous crest (less distinct in females) ; a very 



