brown (in dried skins); length (skins), 145-152 (150); wing, 65.5- 71.5 (69.3); tail, 51-57.5 (53.8); culmen, 18.5-20.5 (19.6); tarsus, 28-31.5 (30.5); middle toe, 16.5-18.5 (17.5).[1]
Adult female. — Pileum and hindneck brown (nearly mummy brown), passing into grayish (more or less extensively) on forehead and into light buffy grayish on supra-auricular region; rest of upper parts plain cinnamon-rufous, somewhat darker and duller on tail, paler and more tawny or cinnamomeous on primaries; lesser wing- coverts mixed black and cinnamon-brown ; middle coverts crossed by a broad subterminal bar of black, the tip lighter cinnamon- rufous than general color; the greater coverts and tertials similarly marked but black subterminal bar narrower; auricular region dark brown or dusky, with narrow shaft-streaks of buffy or whitish; malar region, throat, and chest plain ochraceous-buff, passing into white or buffy white on chin; sides and flanks paler ochraceous-buff, some- what tinged with grayish; breast and abdomen white; under tail- coverts tawny-ochraceous; maxilla dark horn color, mandible paler; legs and feet dull yellowish or light yellowish brown (in dried skins); length (skins), 133-154 (141); wing, 62-69.5 (64.8); tail, 49-58.5 (52.2); culmen, 18.5-20 (19.2); tarsus, 28.5-31 (30): middle toe, 16-18.5 (16.8).[2]
Immature male. — Similar to the adult female, but without distinct, if any, black markings on wings.
Panamá (Lion Hill; Panamá; Sabana de Panamá; Verágua) to northeastern Colombia (Santa Marta, Cacagualito, Don Diego, and Bonda, Santa Marta; Cartagena).
- (?) Myrmeciza longipes (not Myrmothera longipes Vieillot) Sclater, Proc. Zool. Soc. Lond., 1858, 249, part ("New Granada").
- Myrmeciza longipes Lawrence, Ann. Lyc. N. Y., vii, 1862, 325 (Lion Hill, Panamá). — Sclater and Salvin, Proc. Zool. Soc. Lond., 1864, 357 (Lion Hill).
- Myrmeciza swainsoni (not of Berlepsch) Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1892, 229, part (Verágua and Lion Hill, Panamá).
- ↑ Eleven specimens.
- ↑ Nine specimens.
Locality. Wing. Tail. Culmen. Tarsus. Middle
toe.males. Five adult males from eastern Panamá 68.5 52.5 19.7 30.7 17.2 Six adult males from Santa Marta, Colombia 70 55.5 19.5 30.2 17.7 Two adult males (M. b. swainsoni) from Venezuela 66.7 52.7 18.5 29.5 16.7 Ten adult males (M. b. swainsoni) from Trinidád 66.6 53.5 19.4 29.2 16.9 females. Four adult females from eastern Panamá 63.9 50.4 18.9 29.5 16.4 Five adult females from Santa Marta, Colombia 65.5 54 19.4 30.4 17.1 Four adult females (M. b. swainsoni) from Venezuela 66 53.4 17.3 38.6 16.4 Six adult females (M. b. swainsoni) from Trinidád 66.3 52.5 18.7 28.2 16.5
