BIRDS OF NORTH AND MIDDLE AMERICA. Ill 



passing into ocin'aceous-buft' on abdomen), the sides and flanks more 

 brownish (nearly raw umber), the shite-gray restricted to chin and 

 upper throat; waug, 63; tail, 41; culmen, 19; tarsus, 27; middle 

 toe, 17, 



Eastern Panama (Cascajal, Code) and adjacent portion of north- 

 western Colombia (Turbo). 



Mynneciza cxsul " (not of Sclater, 1858) Cassin, Proc. Ar. Nat. yd. Pliila., 1860, 



191 (Turbo, Colombia). 

 Myrmelastcs cassini Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 1908, 194 



(Turbo, n. w. Colombia; coll. U. S. Nat. Mus.). 



MYRMECIZA EXSUL EXSUL Sclater. 



SCLATER'S ANTBIRD. 



Adult male. — Head and neck, all round, uniform slate-black; upper 

 parts (except pileum and hindneck) plain deep chestnut; lesser wing- 

 coverts at least partly black, those along anterior margin of wing 

 more or less extensively white, and beliind this white margin often 

 a few small dots of wliite; the carpo-metacarpal region also streaked 

 with white, and outermost feather of alula sometimes edged with 

 white; under parts (except chin, throat, flanks, anal region and 

 under tail-coverts), plain blackish slate color; flanks, anal region, and 

 luider tail-coverts plain mummy or Vandyke brown; bill black; iris 

 brown; bare skhi of postocular region and chin sky blue; legs and 

 feet dusky (blackish horn color or dark bluish gray in life) ; length 

 (sldns), 126-148 (134); wing, 64-71 (67.4); tail, 44-49 (46.8); culmen, 

 18.5-21.5 (20.2); tarsus, 27-29.5 (28.2); middle toe, 17.5-19 (17.9).^ 



Adult female.— Upper parts as in adult male, but slate-black of 

 pileum and hindneck slightly duller; chin and throat slate-blackish, 

 but usually duller than in adult male; rest of under parts plain van- 

 dyke or mummy brown; bill, etc., as in adult male, but mandible 



« The following citations of Mynneciza (or Myrmelastcs) exsid refer to one or more 

 allied forms: 



Myrmeciza exsul (not of Sclater, 1858) Sclater, Proc. Zool. Soc. Lond., 1860, 

 294 (Esmeraldas, w. Ecuad6r; crit.); Cat. Am. Birds, 1862, 187 (Esmer- 

 aldas); Cat. Birds Brit. Mus., xv, 1890, 279 (Esmeraldas and Intac, Ecuador; 

 Nechi, Colombia). — Sclater and Salvin, Proc. Zool. Soc. Lond., 1879, 526 

 (Nechi, Antioquia, Colombia). — Berlepsch and Taczanowski, Proc. Zool. 

 Soc. Lond., 1883, 566 (Chimbo, w. Ecuad6r; crit.). — Salvadori and Festa, 

 Boll. Mus. Zool., etc., Torino, xv, 1899, no. 362, p. 31 (Foreste del Rio Peripa, 

 w. Ecuad6r). — Hartert, No\dt. Zool., v, 1898, 493 (Cachaia, n. w. Ecua- 

 dor). — GooDFELLOW, Ibis, 1902, 65 (Santo Domingo and Guanacillo, n. w. 

 Ecuad6r; habits, etc.). 



[Myrmeciza] exsul Sclater and Salvin, Nom. Av. Neotr., 1873, 74. 



[Myrmelastcs'] exsul Sharpe, Hand-list, iii, 1901, 32 (Colombia to Ecuad6r). 



(The bird from Nechi, Colombia, may possibly be M. cassini.) 

 ^ Sixteen specimens. 



