BIKDS OF NORTH AND MIDDLE AMERICA. 397 



MONASA FIDELIS Nelson. 



GOLDMAN'S NITN BIRD. 



Similar to M. movphceus and M. 'peruana in having the malar apex 

 as well as forehead and chin white or pale rusty, but differing in 

 having the whole head (otherwise), neck, and upper chest black, 

 rather abruptly defined against the bluish slate color of back and 

 bluish slate-gray of breast. 



Adult male. — Frontal area (including forehead, antrorse supranasal 

 plumes, and greater part of lores), anterior portion of malar region, 

 chin, and upper throat dull white, shghtly tinged with rusty brown ; 

 rest of head, together with neck, all round, uniform black, passing 

 into slate-black on upper chest; back, scapulars, wing-coverts, rump, 

 and upper tail-coverts uniform bluish slate color; remiges black, 

 faintly glossed with greenish blue, the distal secondaries narrowly 

 edged wdth slate color, the innermost secondaries mostly slate color 

 laterally; tail shghtly glossy bluish black ; under parts of body plain 

 bluish slate-gray, very shghtly paler posteriorly, the under tail- 

 coverts , however, rather darker; under wing-coverts clear slate 

 gray, shghtly lighter than under parts; bill bright red; legs and feet 

 dusky (in dried skins); length (skin), 258; wing, 136.5; tail, 115; 

 exposed culmen, 38.5; tarsus, 20; outer anterior toe, 19.* 



Eastern Panama (Cerro Azul, Canal Zone) . 



Monasa fidelis Nelson, Smithson. Misc. Coll., vol. 56, no. 37, Feb. 16, 1912, 1 

 (Cerro Azul, Panama, 800 ft. alt.; coll. U. S. Nat. Mus.). 



MONASA PALLESCENS Cassin. 



PALE-WINGED NUN BIRD. 



Adults (sexes alike). — A frontal area, involving anterior portion of 

 forehead, antrorse supranasal plumes, and greater part of lores, cin- 

 namon or cinnamomeous white; rest of head, including chin and 

 throat, black, passmg into slate-black on neck (all round); back, 

 scapulars, and rump uniform slate-gray; wing-coverts much paler 

 gray (about no. 6 or no. 7) pahng into about no. 10 gray on anterior 

 portion of lesser covert area; alula, primary coverts, and remiges 

 black or slate-black, the innermost (proximal) secondaries mostly 

 slate-gray; upper tail-coverts blackish slate or slate-black; tad uni- 

 form bluish black; under parts Hght gray, nearly hke wing-coverts, 

 usually slightly darker anteriorly, where sometimes rather abruptly 

 defined against the blackish slate or slate-black of foreneck; bill 

 orange-red in hfe, fading into dull pale red or reddish white in dried 

 skins ; legs and feet grayish brown (in dried skins) . 



o One specimen (the type). 



