BIRDS OF NORTH AND MIDDLE AMERICA. 67 
lateral rectrices, the under parts black with flanks white or light 
gray; or, plain brown or olive above (sometimes with lower back 
and rump rufescent), the wing-coverts spotted with white, under 
parts paler brownish, the throat black spotted or streaked with 
white. Sexes very differently colored, adult females being brown or 
olive above, paler brownish, buffy, or whitish beneath.¢ 
Range.—Honduras to Cayenne and Amazon Valley. (Several 
species. )? 
KEY TO THE SPECIES AND SUBSPECIES OF MYRMOPAGIS. 
a. General color black, or black and slate color, and white (no brown). 
b. Flanks white; under wing-coverts immaculate white. 
c. Upper parts black or slate-black. (Southern Honduras to Venezuela and 
western Ecuadér.).....-...------ Myrmopagis melzna, adult male (p. 68). 
cc. Upper parts slate-gray. (Guiana, Trinid4d, and Amazon Valley.) 
Myrmopagis axillaris, adult male (extralimital).¢ 
bb. Flanks slate color, like back, etc.; under wing-coverts partly black. 
c. Tail shorter (about 28 mm.); lesser and middle wing-coverts partly slate color, 
with anterior portion of the area much more extensively white. (Bolivia to 
eastern Ecuadér.).....-Myrmopagis menetriesii, adult male (extralimital).¢ 
ce. Tail longer (33.5-38 mm.); lesser and middle wing-coverts black tipped with 
white, with anterior portion of the area much lessextensively white. (Guate- 
mala to Colombia and Venezuela.) 
Myrmopagis schisticolor, adult male (p. 70). 
aa. General color olive-brownish (no black except, sometimes, on throat). 
b. Throat black and white. (Southern Honduras to western Ecuador.) 
Myrmopagis fulviventris, adult male (p. 73). 
bb. Throat plain buff or buffy whitish. 
c. Middle and greater wing-coverts distinctly tipped with ochraceous-buff. 
Myrmopagis fulviventris, adult female (p. 74). 
@ Species examined are: Myrmopagis gutturalis (Sclater and Salvin), M. fulvi- 
ventris (Lawrence), Myrmopagis ornata (Sclater), M. menetriesit (D’Orbigny), IM. 
Schisticolor (Lawrence), M. axillaris (Vieillot), and UM. melena (Sclater). 
b The range of the group and number of species composing it are matters of uncer- 
tainty owing to poor representation of the latter in the material examined. 
¢ Myrmothera axillaris Vieillot, Nouv. Dict. d’Hist. Nat., xii, 1817, 113 (Guiana).— 
Formicivora axillaris Cabanis, in Wiegm. Archiv fiir Naturg., 1847, pt. 1, 226.— 
M[yrmophila] axillaris Cabanis and Heine, Mus. Hein., ii, July, 1859, 183.— Myr- 
motherula axillaris Sclater, Proc. Zool. Soc. Lond., 1858, 236, part; Cat. Birds Brit. 
Mus., xv, 1890, 238.—Myrmotherula axillaris axillaris Hellmayr, Novit. Zool., xiv, 
1907, 22 (Itaituba, Brazil; crit.), 32 (Obidos, Brazil), 69 (Teffe, Brazil; crit.), 383 
(Humaytha and Borba, Rio Madeira, Brazil; crit.).—M[yiothera] fuliginosa Lichten- 
stein, Verz. Doubl., 1823, 45, part (Cayenne; Brazil). 
@ Myrmothera menetriesti D’Orbigny, Voy. Am. Mérid., Ois., 1839, 184 (Cocha- 
bamba, Bolivia).—Formicivora menetriesi Cabanis, in Wiegm. Archiv fir Naturg., 
1847, pt. i, 226; Menegaux and Hellmayr, Bull. Soc. Philom., 1906, 51 (crit.; type 
from Yuracares, Bolivia, in Paris Mus.).— Myrmotherula menetriesi Sclater, Proc. Zool. 
Soc. Lond., 1858, 237; Cat. Birds Brit. Mus., xv, 1890, 240, part.— M[yrmophila] mene- 
triest Cabanis and Heine, Mus. Hein., ii, July, 1859, 13, footnote —Myrmotherula 
boliviana Berlepsch, Journ. fiir Orn., Jan., 1901, 96 (San Mateo, n. Bolivia; coll. Count 
von Berlepsch). (See footnote on p. 70 of present work.) 
