( 53 ) 



slightly mixed with brownish ; the rump olive-brown, the upper tail-coverts 

 fuliginous. Both are adult birds with a large blackish throat patch. 



S. r. amazonica is apparently widely distributed all along the south bank of 

 the Amazons. 



45. Automolus infuscatus infuscatus (Scl.) 



Anabates infuscatus Sclater, Ann. Mag. Nat. Hist. (2) xvii. p. 468 (185G. — " in Peruvia orientali "). 

 Anabates sclateri Pelzeln, Silzungsber. Alcad. Wien xxxiv. p. Ill (1859. — nom. emend, pro 

 A. infuscatus: cfr. Berl. & Hellm. Journ.f. Ornith. 1905, p. 30). 



Nos. 695, 902. c?c? ad., 22. v., 25. vi. 00. "Iris brownish grey, feet greenish, 

 bill greyish black, below greenish grey." — Wing 94, 95 ; tail 80, 85 ; bill 22, 

 23 mm. 



These birds agree with typical Peruvian skins in having the pileum olive-brown 

 like the back, only the forehead being slightly tinged with rnfescent. According 

 to our present knowledge, there are three geographical races of this species to 

 be recognised, the characters and ranges of which are as follows : 



a. Automolus infuscatus infuscatus (Scl.) 



Ad. Top of the head pure clear olive-brown like the back, only the forehead 

 slightly tinged with rnfescent. 



Hab. North Pern : Xeberos, Chyavetas (Bartlett), Ynrimaguas (Stolzraann), 

 Shanusi, near Yurimaguas (G. Garlepp). S.E.Peru: Cosnipata (Whitely). N.W. 

 Brazil : Teffe" (Hoffmanns). 



b. Automolus inuscatus cervicalis (Scl.) 



For synonymy see Nov. Zool. xiii. (1906) p. 335. 



Ad. Top of the head distinctly washed with rnfescent, hence somewhat 

 contrasting with the olive-brown colour of the back. 



Hab. Cayenne (four skins in the Tring Museum) ; British Guiana : Bartica 

 Grove, Camacnsa (Whitely) ; Surinam (C. Bartlett) ; Venezuela : Nericagna on the 

 Orinoco ; La Pricion, La Union and Nicare on the Oanra River (Cherrie aud Andre 

 coll.). North Brazil : Marabitanas, upper Rio Negro (Natterer).* 



N.B. I have lately examined four skins from the latter locality, and found 

 them identical with our series from Venezuela and Guiana. On the other hand, 

 I have not yet seen any from Ecuador, and therefore cannot say whether they 

 belong to A. i. infuscatus or to the present form. 



Young birds are nearly uniform rnfescent brown on the npper parts, the middle 

 of the belly is paler than in the adults, and the feathers on the foreneck show 

 slight dusky edges. 



c. Automolus infuscatus paraensis Hart. 



Ad. Differs from both the foregoing forms by having the top of the head dark 

 greyish brown (with only a faint olive hue), and the back of a duller brown. 



Hab. Lower Amazonia : Benevides (Steere), S. Antonio do Prata [= Igarape"- 

 Assu] (Robert, Hoffmanns, etc.), Para (Natterer, Snethlagef), Rio Capim 

 (Snethlage +), all localities in the Para district ; Borba, lower Rio Madeira (Natterer). 



For synonymy see Nov. Zool. xiii. (1905) p. 279. 



* Automolvs sclateri Pelzeln, Xur Ornith. Brazil, i. 18G7, p. 41, part. 

 f Automolus sclateri Snethlage, Journ.f, Ornith. 1906, p, 524. 



