( 13 ) 



29. Attila thamnophiloides (Spix). 



Muaeicapa thamnophiloides Spix, Av. Bras. ii. p. 19 pi. xxvi. fig 1. (1825 -" in locis sylvaticis a. 

 Amazonum.") 



No. 510. S ad., Itaituba, 30. i. 06. " Iris light brown." 

 Specimens from Surinam are not different. 



30. Lipangus simplex (Lcht.j. 



Cfr. Nov. Zoo!, xiii. p. 364. 



No. 455. $ juv*., Itaituba, 10. i. 06. "Iris brown.*' 



31. Furnarius minor Pelz. 



Furnarius {Opetiorhynchws) minor Pelzeln, Sitzungsber. Ahad. Wien xxxi. (1858) p. 321 [Brasilien, 



sc. Rio Madeira ; cfr. Orn. Brasil. i. (18G7) p. 35]. 

 Furnarius minor Riker & Chapman, .1«/.-, 1891, p. 20 (Santarein). 



Nos. 433, 4711, 530, 537, 545, 504. 2 AS ad., Itaituba, 12, 19. i. 00 ; 1 i ad., 

 1 (? jnv., 1 ?, and one immature bird, not sexed, from Urucurituba, 6, 7, 10. ii. 06. 

 " Iris red or brownish yellow." 



This series does not differ from Upper Amazonian skins. All have a distinct 

 pale ciunamomeous spot on the inner web of the first primary, near the base. 



32. Synallaxis gujanensis gujanensis (Gin.) 



MotaeiUa gujanensis Gmelin, Syst. Nat. 1. ii. (1788) p. 988 (ex Daubenton, PI. enl. 686. fig. 2.— 



Cayenne). 

 Synallaxis guianensis Riker & Chapman, Auk, 1891, p. 26 (Santarem). 



Nos. 473, 475. c? ¥ ad., Itaituba, 21. i. 06. "Iris brown-red, bill black, 

 below grey." 



Exactly like specimens from Surinam, British Guiana and Para (Layard coll., 

 Mus. Brit.). Others from the Caura River and from Bogota collections are also 

 not different. The typical form has the middle of the abdomen distinctly whitish, 

 the foreneck and chest washed with buff, and the sides of the body pale brownish. 



On the Rio Madeira a closely allied form takes its place. This is S. gujanensis 

 inornate, Pelz., which differs in having the whole under surface (except the white 

 throat) considerably darker, uniform brownish buff, without any white in the middle 

 of the belly. 



33. Synallaxis rutilans amazonica n. subsp. 



Three ? ? ad., Itaituba, 22, 27. i. 06. Nos. 481, 493, 495. "Iris brown, feet 

 grey, bill black." Wing 60—61 ; tail 66 ; bill 13i — 14 mm. 



The examination of a large amount of materia) revealed the interesting fact 

 that three distinct forms had hitherto been united under the name of S. rutilans, 

 and that <S'. omissa Hart., of Para, was evidently also a geographical race of this 

 group. Thus, we have to distinguish the following forms : 



a. Synallaxis rutilans rutilans Temiu. 

 Synallaxis rutilanB Temminck, PI. col. livr. 28, tab. 227. fig. 1 (Sept. 1823.—'- Br&il ") ; Pelzeln, Zur 

 Ornith. JJr,,,,/. i. (1867) p. 36 (part. : Rio Xegro and Marabitanas) : Sclater, Cat. Birds Brit. 

 Mus. xv. (1890) p. 57 (part. : spec. a ex Oyapoc, Cayenne) ; Berleps;h & Hartert. Nov. Zool. ix. 

 (1902) p. 60 (Nericagua, Orinoco ; Caura R., Venezuela). 



Hab. N.W. Brazil: Rio Xegro, Marabitanas (Xatterer). Venezuela: Xeri- 

 cagua, Orinoco (Cherrie) ; La Union, La Pricion, Nicare (Andro), Suapure (Klages) 

 on the Caura River. French Guiana : Oyapoc (Verdey). 



