SCLERURUS CANIGULARIS Ridgway.
GRAY-THROATED SCLERURUS.
Adults (sexes alike). — Pileum deep to dark sepia (sometimes lighter and browner on forehead), the feathers sometimes indistinctly margined with dusky; back, scapulars, and wing-coverts plain deep warm-sepia or vandyke brown, passing into chestnut on rump and upper tail- coverts, the wing-coverts inclining to chestnut or margined with that color; tail dark seal brown basally, passing into brownish black terminally; remiges dark sepia brown, the primary coverts more dusky; chin and throat light mouse gray, deeper on lower throat, paler (sometimes inclining to dull white) on chin; chest (broadly) dark dull cinnamon-rufous or tawny-chestnut; rest of under parts dark grayish brown or brownish slate color, tinged or suffused with tawny- chestnut, the under tail-coverts inclining to chestnut, with concealed portion dusky; maxilla brownish black, passing into horn color terminally; mandible dull pale yellowish or whitish (in dried skins), dusky along tomia; legs and feet dusky horn color (in dried skins).
Young. — Similar to adults but general color of upper parts more castaneous (less strongly contrasted with chestnut of rump and upper tail-coverts) and color of chest duller (between mummy brown and vandyke).
Adult male. — Length (skins), 151-168 (158); wing, 86-93 (89.2); tail, 58.5-62.5 (60.4) ; culmen, 21.5-22.5 (22.4); tarsus, 22-22.5 (22.2); middle toe, 18-19.5 (18.6).[1]
Adult female. — Length (skins), 140-166 (155); wing, 85-89 (86.8); tail, 57-60.5 (58.6); culmen, 21.5-24 (22.2); tarsus, 21-22.5 (21.8); middle toe, 17.5-19 (18.6).[1]
Costa Rica (Turrialba; Cariblanco de Sarapiquí; Tenório; Buena Vista; Cerro Santa Maria) and western Panamá (Boquete).
- Sclerurus canigularis Ridgway, Proc. U. S. Nat. Mus., xi, sig. 34, Sept. 20, 1889, 542 (Turrialba, Costa Rica; coll. U. S. Nat. Mus.); xii, 1890, 24 (monogr.); xvi, 1893, 613 (Buena Vista, Costa Rica; crit.). — Zeledón, Anal. Mus. Nac. Costa Rica, i, 1887, 114. — Sclater, Ibis, 1889, 354 (crit.). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1891, 166. — Bangs, Proc. New Engl. Zool. Club, iii, 1902, 45 (Boquete, Panamá, 5,600-5,800 ft.). — Carriker, Ann. Carnegie Mus., vi, 1910, 645 (Costa Rica; crit.).
- [Sclerurus] canigularis Sharpe, Hand-list, iii, 1901, 72.
- Sclerurus albigularis (not S. albogularis Swainson) Sclater, Cat. Birds Brit. Mus., XV, 1890, 114, part (in synonymy).
SCLERURUS MEXICANUS MEXICANUS Sclater.
MEXICAN SCLERURUS.
Adults (sexes alike). — Above plain deep warm-sepia brown (sometimes approaching prouts or vandyke brown), duller and rather
