70 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Frio, Costa Rica) —Satvaporrand Festa, Boll. Mus. Zool., etc., xv, no. 362, 
1899, 30 (Foreste del Rio Peripa, w. Ecuadér).—Goopreiiow, Ibis, 1902, 
64 (Santo Domingo, w. Ecuadér).—Brrierscu and Harter, Novit. Zool., 
ix, 1902, 74 (Maipures, etc., Venezuela; crit.; descr. nest and eggs).— 
Carrixer, Ann. Carnegie Mus., vi, 1910, 608 (Caribbean lowlands up to 
1,500 ft., Costa Rica; crit.; habits). 
[Myrmotherula] melena PeuzEtnN, Om. Bras., iv, Abth., 1870, 418.—ScLaTER 
and Satvin, Nom. Av. Neotr., 1873, 72.—SHarpe, Hand-list, iii, 1901, 22. 
M[yrmophila] melaena Capanis and Herne, Mus. Hein., ii, July, 1859, 13. 
Myrmotherula albigula Lawrence, Ann. Lyc. Nat. Hist. N. Y., viii, 1867, 131 
(Panam4, Railway; coll. G. N. Lawrence;=9; see Salvin, Ibis, 1874, 317); 
ix, 1868, 108 (Angostura, Costa Rica).—Frantzius, Journ. fiir Orn., 1869, 
305 (Costa Rica). 
MYRMOPAGIS SCHISTICOLOR (Lawrence). 
- SLATY ANTWREN. 
Similar to MM. menetriesit D’Orbigny (?%)% but tail much longer (both 
absolutely and relatively); adult male with wing-coverts much darker, 
the lesser and middle coverts being wholly black (except for the white 
terminal spots), instead of slate color with black subterminal area, 
and inner-anterior portion of lesser wing-covert area much less 
extensively white. 
Adult male—Above mainly uniform slate color; wing-coverts, 
which are black, each tipped with a transversely subtriangular or 
subrounded spot of white; primary coverts and alula also black, the 
former with a small white mark at tip of outer web, the latter termi- 
nally margined with white; a white patch (mostly concealed) at 
junction of wing and body; chin, throat, and chest (sometimes breast 
also, at least medially) uniform black; malar region black, barred 
with slate-gray; sides of head and neck, together with lateral and 
posterior under parts, uniform slate color, except under tail-coverts, 
which are margined terminally with white and barred subterminally 
with black; under wing-coverts mixed white and blackish; inner 
webs of remiges broadly edged with brownish white; bill black; iris 
brown; legs and feet grayish, horn color, or dusky (bluish gray or 
grayish blue in life); length (skins), 90-105 (96.5); wing, 54-61 
(56.8); tail, 33-388 (36); culmen, 12.5-14.5 (13.3); tarsus, 15.5-17 
(16.3); middle toe, 9.5-10 (9.7).° 
a Never having seen a specimen from Bolivia (the type locality of Myrmothera mene- 
triesit) comparison of Colombian and Central American specimens has been made with 
one from Napo, eastern Ecuadér, which may or may not represent the true M. mene- 
triesii. Thespecimen in question, while having the wing as long as the shortest-winged 
example of M. schisticolor (54 mm.) has the tail barely 28-mm., the shortest-tailed 
adult male of M. schisticolor having the tail 33.5 mm., while others range up to 38 mm. 
b Twenty-two specimens from Costa Rica, Panamé, and Colombia. 
