32 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



[Catharus] melpomene Sclater and Salvin, Nom. Av. Neotr., 1873, i, part (Costa 



Rica). 

 Catharus melpomene costaricensis Hellmayr, Jouni. fur Orn., 1, no. 1. Jan., 1902, 



45 (Costa Rica; coU. von Berlepscli). 

 [Catharus] costaricensis Sharpe, Hand-list, iv, 1903, 181. 



CATHARUS GRISEICEPS Salvin. 

 GRAY-HEADED NIGHTINGALE THRUSH. 



Adult male. — Head and neck plain slate-gray, gradually fading to 

 whitish gray or grayish white on throat; back, scapulars, and rump, 

 plain tawny-olive or raw-umber, the upper tail-coverts, tail, and 

 wings similar but slightly warmer or more rufescent brown; throat 

 grayish white or very pale gray, sometimes streaked white and pale 

 gray; chest, sides, and flanks plain clear gray (no. 6 or no. 7), the 

 feathers of chest with very narrow and indistinct shaft-streaks of 

 paler gray or white; lower median portion of breast, abdomen, anal 

 region, and under tail-coverts white, the last sometimes faintly 

 tinged with buff; maxilla yellowish, the culmen and most of basal 

 portion dusky; mandible yellowish (bright yellow or orange in life); 

 naked eyelids orange (in life); iris brown; legs and feet yellowish 

 (orange or orange-yellow in life) ; length (skins), 146-154 (151) ; wing, 

 79-84 (80.2); tail, 58.5-64.5 (60.7); exposed culmen 13-15.5 (14.6); 

 tarsus, 30.5-33.5 (31.7); middle toe, 17-17.5 (17.4).« 



Adult female. ^^iimlsir to the adult male, but gray of head tinged 

 with olive; length (skins), 139-157 (148); wing, 78-81 (79.2); tail, 

 57-61.5 (59.7) ; exposed culmen, 14.5-15.5 (15) ; tarsus, 30.5-31 (30.8) ; 

 middle toe, 17-17.5 (17.2).^ 



Mountains of Panama (Boquete; Volcan de Chiriqui; Santa Fe; 

 Chitra; Calovevora; Calobre; Soua). 



Catharus griseiceps Salvin, Proc. Zool. Soc. Lond., 1866, 68, 69 (Santa Fe, Vera- 

 gua; coll. Salvin and Godman; also, Volcan de Chiriqui, Chitra, Calovevora, 

 and Calobre, Veragua); 1867, 132 (Santa Fe, Veragua); 1870, 179 (do.)— 

 Salvin and Godman, Biol. Centr.-Am., Aves, i, 1879, 6, pi. 1, fig. 2. — 

 Seebohm, Cat. Birds Brit. Mus., v, 1881, 287.— Bangs, Proc. New Engl. 

 Zool. Club, iii, 1902, 50 (Boquete, Chiriqui, 4,000 to 4,800 it.). 



[Catharus] griseiceps Sclater and Salvin, Nom. Av. Neotr., 1873, 1. — Sharpe, 

 Hand-list, iv, 1903, 182. 



[Turdus] griseiceps Gray, Hand-list, i, 1869, 259, no. 3777. 



CATHARUS GRACILIROSTRIS GRACILIROSTRIS Salvin. 

 SLENDER-BILLED NIGHTINGALE THRUSH. 



Adults {sexes alike). — Pileum (sometimes forehead and crown only) 

 dull, rather dark, brownish gray, the feathers with indistinct darker 

 shaft-streaks; occiput, hindneck, and rest of upper parts plain brown 

 (var}nng from dark raw-umber to mummy brown or nearly mars 

 brown, the remiges and rectrices dull grayish brown with paler and 



« Six specimens. b Three specimens. 



