BIRDS OF NORTH AND MIDDLE AMERICA. 719 
Young male (nestling) —Above plain sooty blackish or blackish 
brown (nearly clove brown), rather lighter (dark sepia) on head, the 
wings and tail nearly black; greater wing-coverts rather broadly 
tipped with white but with a narrow terminal margin of dusky; 
rectrices (except middle pair) tipped with white, as in adults; under 
parts plain dark sooty brown, tinged with chestnut-brown or vandyke 
brown. 
Southeastern Mexico, in States of Vera Cruz (Playa Vicente; Buena 
Vista), Oaxaca (Acétepec) and Tabasco (Teapa) through Guatemala 
(Chocttim; sources of Rio de la Pasién; Yzabél; Telemain; Los 
Amates; Uspantén, Quiché) to Honduras (Omoa; San Pedro; Rio 
Blanco) and British Honduras (near Manatee Lagoon; Toledo 
District). 
Formicivora boucardi ScLaTER, Proc. Zool. Soc. Lond., 1858, 241, 300 (Acdtepec, 
Oaxaca; coll. P. L. Sclater); 1859, 383 (Playa Vicente, Vera Cruz); Cat. 
Am. Birds, 1862, 183, pl. 16 (Oaxaca; Chocttim, Guatemala); Cat. Birds 
Brit. Mus., xv, 1890, 254, part (Ac4tepec, Oaxaca; Chocttim and sources of 
Rio de la Pasién, Guatemala)—Moorz, Proc. Zool. Soc. Lond., 1859, 55 
(Omoa, Honduras).—Sciater and Satvin, Ibis, 1859, 119 (Omoa, Honduras; 
Proc. Zool. Soc. Lond., 1870, 837 (San Pedro, Honduras).—Satvin and Gop- 
man, Biol. Centr.-Am., Aves, ii, 1892, 216, part (Ac&tepec; Playa Vicente; 
Choctiim, Yzab4l, and Telem4n, Guatemala; Omoa and San Pedro, Hon- 
duras).—Derarsorn, Pub. 125, Field Mus. Nat. Hist., 1907, 109 (Los Amates, 
e. Guatemala). 
[Formicivora] boucardi ScLaTER and Satvin, Nom. Av. Neotr., 1873, 72, part.— 
SHarPe, Hand-list, iii, 1901, 26, part. 
Formicivora boucardii Boucarp, Ann. Soc. Linn. Lyon, 1878, 39 (Guatemala; 
Playa Vicente, Vera Cruz). 
D{rymophila] bowcardi Ricumonp, Auk, xvi, Oct., 1899, 354, in text. 
MICRORHOPIAS BOUCARDI VIRGATA (Lawrence). 
PANAMA ANTWREN. 
Similar to M. 6. boucardi but adult male more intensely and 
extensively black (even the sides and flanks usually black or slate- 
black),¢ the adult female with color of under parts much darker 
(rufous-chestnut instead of rufous-tawny) and upper parts darker. 
Adult male—Length (skins), 96-113 (106); wing, 47.5-51 (49.5); 
tail, 40-49 (45.9); culmen, 13-14.5 (13.8); tarsus, 15-16 (15.7); 
middle toe, 8.5-9.5 (8.9). 
2A few specimens from Nicaragua and Costa Rica have the flanks slate color, 
much as in northern examples (M. b. boucardi), but all of the females seen from 
Costa Rica belong unmistakably to the Panam4 form. (I have not seen any females 
from Nicaragua.) 
The white mesial streaks showing on the adult male described by Mr. Lawrence 
(and on which the name virgata was based) are an individual peculiarity, which I 
do not find repeated in any other specimen examined, even from Panamé. 
This form is distinctly intermediate in coloration between M. b. boucardi and 
M. b. consobrina of Colombia and Ecuador, 
b Twenty-one specimens, 
