22 BULLETIN nO, UNITED STATES NATIONAL MUSEUM. 



examples, with which one from Bogota, Colombia, appears to agree 

 very closely, but one from the Rio Napo, eastern Ecuador, in the 

 United States National Museum collection is so conspicuously different 

 that it can hardly be the same form. The Kio Napo specimen is 

 much browner above than either of the Guatemalan skins or that 

 from Bogota, the spots on the chest are decidedly darker (dull 

 l)lackish) as well as more triangular in form, the malar region is 

 streaked sooty black and pale buffy instead of forming a sharply 

 defined black patch, and the ])lack of the head is much less intense. 

 The wing and tarsus are also shorter. 



CENTRAL AMERICAN REFERENCES. 



Malacocichla dryas Gould, Proc. Zool. Soc. Lond., Nov. 28, 1854, 285, 286, pi. 75 

 (Guatemala; type in coll. Brit. Mus.); Ann. and Mag. N. H., 2d ser., xvii, 

 1856, 78, 79. — Sclater and Salvin, Ibis, 1859, 7 (Vera Paz, Guatemala). 



Cathanis dryas Sclater, Proc. Zool. Soc. Lond., 1859, 324 (monogr.); Cat. Am. 

 Birds, 1862, Suppl. no. 2* (Vera Paz).— Baird, Review Am. Birds, 1864, 10 

 (Teleman, Guatemala). — Salvin, Proc. Zool. Soc. Lond., 1866, 69 (refer- 

 ences). — Salvin and Godman, Biol. Oentr.-Am., Aves, i, 1879, 7, part, pi. 2, 

 fig. 2 (Teleman and Volcan de Agua, above San Diego, Guatemala). 



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

 Hand-list, iv, 1903, 182, part. 



[Turdus] dryas Gray, Hand-list, i, 1869, 259, no. 3781. 



Turdus dryas Seebohm, Cat. Birds Brit. Mus., v, 1881, 204, part. 



SOUTH AMERICAN REFERENCES. 



'Malacocichla maculata Sclater, Proc. Zool. Soc. Lond., 1858, 64 (Rio Napo, e. 

 Ecuador; coll. P. L. Sclater; ex Catharus maculatus J . Verreaux, manuscript). 



Catharus maculatus Sclater, Proc. Zool. Soc. Lond., 1859, 324 (monogr.); 1860, 

 64 (Pallatanga and Chillanes, Ecuador); Cat. Am. Birds, 1862, 1 (Chillanes 

 and Pallatanga, e. Ecuador).— Salvin, Proc. Zool. Soc. Lond., 1866, 69. — 

 Taczanowski, Proc. Zool. Soc. Lond., 1882, 5 (Huambo, n. e. Peru). 



[Catharus] maculatus Sclater and Salvin, Nom. Av. Neotr., 1873, 1. 



Catharus dryas (not Malacocichla dryas Gould?) Berlepsch and Taczanowski, 

 Proc. Zool. Soc. Lond., 1883, 538 (Chimbo, w. Ecuador; crit.); 1884, 283 

 (Pedregal, Placer, and Cayandeled, w. Ecuador; crit.). 



{Catharus'] dryas Sharpe, Hand-list, iv, 1903, 182, part. 



CATHARUS MEXICANUS MEXICANUS (Bonaparte). 

 BLACK-HEADED NIGHTINGALE THRTISH. 



Adults. — Pileum plain black, becoming duller and tinged with gray- 

 ish brown on the forehead; rest of upper parts plain olive, the upper 

 tail-coverts and tail slightly browner (inclining to bister); sides of 

 head, including lores, dusky (dull blackish gray) fading into brownish 

 gray on lower portion of auricular and suborbital regions and malar 

 region; chin and throat dull white, tinged, or obsoletely streaked or 

 spotted, with pale grayish olive-brown; chest, upper breast, sides, and 

 flanks light olive; lower breast, abdomen, and under tail-coverts 

 white, the last strongly tinged with buff; bill, naked eyelids, legs, and 

 feet yellowish (bright yellow or orange in life). 



