28 REVIEW OF THE GENUS SCLERURUS — RIDGWAY. 



6.70; wing, 3.75 ; tail, 2.90 ; tarsus, .87 ; middle toe, .75. (Bill with tip 

 broken.) 



Sclerurus fuscus (Max.). 



Tinactor fuscus Max., Beitr., in, 1831, 1106 (part; male, but not female). 

 ? Sclerurus caudacutus Scl. & Salv., P. Z. S., 1867, 750 (Yurimaguas aucl Cbyavetas, 

 E. Peru.) 



Sp. Char. — Uniform vandyke or mummy brown, slightly paler aud 

 more tawny on sides of bead and neck and under portions of the same, 

 and slightly more rufesceut on rump aud upper tail-coverts; feathers 

 of chin aud upper throat indistinctly paler basally. 



Hab. — Upper Amazons. 



Adult male (No. 0807, American Mus. Nat. Hist. ; type of Tinactor 

 fuscus Max.!) — Uniform bright vaudyke-brown, inclining to mummy- 

 brown on under parts, the rump and upper tail-coverts inclining to 

 burnt-umber, and the forehead, sides of head aud neck (especially on 

 malar region) lighter and more tawny, this color extending iudistiuctly 

 around hind-neck ; chin and upper throat dull brownish white, but this 

 nearly hidden by broad brown tips to the feathers ; lower throat and 

 chest mummy-brown, like under parts of the body, but slightly tinged 

 or mixed with tawny. Tail dark dull brown, less dusky toward base, 

 especially on edge of feathers. Upper mandible with basal half blackish, 

 terminal half and entire edge brownish ; lower mandible whitish, brown- 

 ish terminally. Length (mounted specimen), 6.50; wing, 3.55; tail, 

 2.90 ; exposed culmen, .80. 



Young male (No. 32797, Rio Napo ; maisou Verreaux). — Uniform van- 

 dyke-browu, becoming burnt-umber on lower rump and upper tail cov- 

 erts, lighter vaudyke-brown, or almost mummy-brown, on chest, the 

 throat aud sides of head still slightly paler, the feathers of chin and 

 upper throat pale brownish or dull browuish white basally ; tail blackish 

 brown terminally, more brown basally and on edge of feathers. Upper 

 mandible brownish black, browner terminally and ou edges ; lower man- 

 dible dusky brown, paler at base; legs and feet dusky brown. Length 

 (skin), 7.40; wing, 3.50; tail, 2.75; exposed culmen, .80; tarsus, .87 ; 

 middle toe, .75. 



The type of Tinactor fuscus Max., described above, is certainly spe- 

 cifically identical with the immature Rio Napo skin labeled by Ver- 

 reaux " Sclerurus brunneus Scl., juv. $ ." In fact, the two are abso- 

 lutely alike in coloration, though the difference in the texture of the 

 plumage shows at once that one is an adult and the other a young bird. 



While there is considerable resemblance to 8. brunneus Scl., the size 

 is considerably greater, and there is no admixture of white on the 

 throat, the latter showing distinctly even in a young bird of 8. brun- 

 news, from the Rio Iugador, Colombia. (See remarks on the latter, p. 29.) 



The specimen described by Maximilian as the female of T. fuscus 

 (Beitr., Ill, p. 1109) is a typical specimen of 8. umbretta, and was prob- 

 ably from a different locality. Unfortunately Prince Maximilian does 



