BIRDS OF NORTH AND MIDDLE AMERICA. 1138 
MYRMECIZA EXSUL OCCIDENTALIS (Cherrie). 
CHERRIE’S ANTBIRD. 
Adult male —Head and neck, all round, plain black or slate-black; 
rest of upper parts plain chestnut, the tail slightly darker; anterior 
lesser wing-coverts black (those along margin of wing white), the 
posterior ones more brownish; outermost feather of alula some- 
times edged with white; chest, breast, sides, and abdomen plain 
blackish slate (rather darker anteriorly, where usually shading grad- 
ually into the black of throat, slightly paler, or clearer slate color, 
posteriorly); flanks, anal region, and under tail-coverts plain chest- 
nut-brown or vandyke brown; bill black; iris brown; bare skin of 
postocular region and chin sky blue (in life); legs and feet dusky 
(blackish horn color or dark bluish gray in life); length (skins), 
125-148 (133); wing, 65-71 (68.3); tail, 47-51.5 (48.1); culmen, 
20-22 (20.7); tarsus, 27-29.5 (27.8); middle toe, 17.5-19.5 (18.2).¢ 
Young male (nestling) —Much like the adult male but coloration 
much duller, the chestnut of back mixed or tinged with sooty brown, 
the head, neck, and chest sooty blackish or brownish slate-black, 
and under parts of body mixed sooty brown and tawny brown. 
Adult female—Upper parts as in adult male, but color of back, 
etc., usually rather lighter, more tawny, chestnut, and less sharply 
defined against the dusky slate color of pileum and hindneck, which 
are usually more or less tinged with brown; sides of head, chin, and 
upper throat slate color, the latter sometimes tinged with tawny 
brown; lower throat and chest bright tawny-chestnut or rufous- 
chestnut, passing into russet or tawny-russet on breast and abdo- 
men, the flanks, anal region, and under tail-coverts tawny-brown 
(between mars brown and russet) ; bill, etc., as in adult male; length 
(skins) , 131-140 (135) ; wing, 62-69 (65.7) ; tail, 44.5-49 (46.8) ; culmen, 
18.5-21.5 (20.1); tarsus, 27-29.5 (28.1); middle toe, 17-18 (17.7).¢ 
Pacific slope of Costa Rica (Pozo del Pitél, Rio Naranjo; Pozo 
Azél de Pirris; Pozo del Rio Grande; Pozo de Térraba; El General; 
Paso Reaél; Boruca; Buenos Aires; Barranca, Boruca; Las Trojas; 
Palmar; Lagarto; La Palma de Nicoya; Esparta; San Mateo; San 
Carlos), and western Panama (Divala; Bugaba). 
Myrmeciza immaculata (not of Sclater and Salvin) Satvin, Proc. Zool. Soc. 
Lond., 1870, 195 (Bugaba, Panamé; crit.)—Boucarp, Proc. Zool. Soc. 
Lond., 1878, 61 (San Carlos and San Mateo, Costa Rica).—Rimeway, Proc. 
U. 8S. Nat. Mus., v, 1882, 398 (La Palma de Nicoya, Costa Rica; crit.).— 
Zeuepon, Anal. Mus. Nac. Costa Rica, 1887, 115, part (Las Trojas and Pozo 
Azul, w. Costa Rica). 
Myrmeciza immaculata occidentalis Cuzrriz, Auk, viii, April, 1891, 191 (Pozo 
Azil, s. w. Costa Rica; coll. U. S. Nat. Mus.). 
@ Ten specimens, from Costa Rica, 
81255°—Bull. 50—-11——8 
