BIRDS OF NORTH AND MIDDLE AMERICA, 21 



ee. Moif olive-brown aliovc; gray of rhost, and sides averaging paler and 



clearer. (Western Mexico.) Catharus melpomene clarus (p. 30) 



dd. Smaller (wing averaging less than 80, tail less than 65, in adult male). 



(Highlands of Costa Rica.) Catharus melpomene costaricensis (p. 31) 



l)h. Pileum grayish, at least for anteiior portion, cons])icuously different from the 

 blown or russet-brown of back, etc. 

 c. Bill and feet yellowisli; throat and under tail-coverts white, the former 

 slightly streaked with gray; chest igray. (Highlands of Panama.) 



Catharus griseiceps (p. 32) 

 cc. Bill and feet dusky; throat giay; chest light olive or tawny-olive; under tail- 

 coverts pale grayish or pale buffy brownish. {Catharus gracilirosfris.) 

 d. Bill smaller, more pointed and slender (exposed culmen averaging 12.7 in 

 adult male). (Highlands of Costa Rica.) 



Catharus gracilirostris gracilirostris (p. 32) 



dd. Bill larger and stouter (exposed cndmen averaging 13.8 in adult male). 



(Highlands of Panama.) Catharus gracilirostris accentor (p. 33) 



CATHARUS DRYAS (Gould). 

 GOULD'S NIGHTINGALE THRUSH. 



Adult male. — Head, except chin and throat, uniform black; hind- 

 neck, back, scapulars, wing-coverts, rump, and upper tail-coverts, 

 plain brownish slate color (between slate color and mouse gray), the 

 last sometimes more brownish; remiges and rectriees darker (dusky) 

 with brownish slate colored edgings, these paler and more brownish 

 on terminal portion of longer primaries; under parts, including chin 

 and throat, yellowish w^hite, more or less strongly tinged with buff- 

 yellow'* on chest and lower throat, passing into slate-gray on sides 

 and flanks; chest (sometimes breast also) spotted with slate-gray or 

 brownish slate; bill, naked eyelids, legs, and feet yellowish (bright yel- 

 low or orange in life); length (skins), 167-188 (177); wing, 96-97.5 

 (96.7); tail, 71.5-73 (72.2); exposed culmen, 16; tarsus, 84.5; middle 

 toe, 18.5-19.5 (19).'' 



Adult female . — Similar to the adult male, but slate color of upper 

 parts darker and browner; culmen partly blackish; length (skin), 164; 

 wing, 92.5; exposed culmen, 15; tarsus, 35.5; middle toe, 19.5.'^ 



Highlands of Guatemala (Teleman; Volcan de Agua, above San 

 Diego), Highlands of Colombia (Bogota)? Highlands of Ecuador (Rio 

 Napo, Pallatanga, and Chillanes, eastern Ecuador; Chimbo, Pedregal, 

 Placer, and Cayandeled, western Ecuador) ? Highlands of northwest- 

 ern Peru (Huambo) and Bolivia? 



Owing to great scarcity of material (only three Guatemalan and 

 two South American specimens having been seen b}^ me) I am not 

 able to state whether the Central American and South American birds 

 are really the same or not. The descriptions are from Guatemalan 



o This fine buff-yellow color is very evanescent and finally disappears on very old 

 skins. 



& Two specimens, from Guatemala. 

 '^Onc specimen, from Guatemala. 



