70 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Frio, Costa Rica). — SALVADORiand Festa, Boll. Mus. Zool., etc., xv, no. 362, 

 1899, 30 (Foreste del Rio Peripa, w. Ecuador). — Goodfellow, Ibis, 1902, 

 64 (Santo Domingo, w. Ecuador). — Berlepsch and Hartert, Novit. Zool., 

 ix, 1902, 74 (Maipures, etc., Venezuela; crit.; descr. nest and eggs). — 

 Carriker, Ann. Carnegie Mus., vi, 1910, 608 (Caribbean lowlands up to 

 1,500 ft., Costa Rica; crit.; habits). 



[Myrmotherula] vielsena Pelzeln, Orn. Bras., iv, Abth., 1870, 418. — Sclatee 

 and Salvin, Nom. Av. Neotr., 1873, 72.— Sharpe, Hand-list, iii, 1901, 22. 



Mlyrmophila] melaena Cabanis and Heine, Mus. Hein., ii, July, 1859, 13. 



Myrviothertda alhigula Lawrence, Ann. Lye. Nat. Hist. N. Y., viii, 18G7, 131 

 (Panamii 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 M. menetriesiiT>' Ovhigny ( ?)'* but tail much lono^er (both 

 absolutely and relatively) ; adult male with wing-coverts mucli 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 subtiiangidar 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 ])arts, 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 grajdsh, horn color, or dusky (bluish gray or 

 grayish blue in life); length (skins), 90-105 (96.5); wing, 54-61 

 (56.8); tail, 33-38 (36); culmen, 12.5-14.5 (13.3); tarsus, 15.5-17 

 (16.3); middle toe, 9.5-10 (9.7).'' 



« Never having seen a specimen from Bolivia (the type locality of Myrmothera mene- 

 triesii) comj^arison of Colombian and Central American specimens has been made with 

 one from Napo, eastern Ecuador, which may or may not represent the true M. mene- 

 triesii. The specimen 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, Pauamd, and Colombia. 



