( M ) 



Another very nearly allied and perhaps barely separable form is Attila 

 rufigularis Pelz.,* the type of which is before rue. In size and general 

 coloration it agrees with the specimens from Cayenne and Teffe, discussed above, 

 but the throat and sides of the head are of a much clearer and brighter 

 ferruginous (without any brownish admixture), the axillaries and under wing- 

 coverts lighter ochraceous, and the middle of the abdomen is more extensively 

 white. The type being a young bird, I cannot say how much of these differences 

 is due to immaturity. 



The ? from Tetfe has the entire bill black, while in all the other specimens 

 (including the type of A. rufigularis) the base of the lower mandible is whitish 

 or pale brownish. 



41. Synallaxis albescens albigularis Scl. 



[Synallaxis albescens Temmiuck, See. PI. ml. livr. ;S8. tab. 227, fig. 2 (1823. -S. Brazil).] 

 Synallaxis albigularis Sclater, P. Z. S. Land. 1858, p. G3 (Rio Xapo, East Ecuador). 



No. 855. ? ad., 18. vi. 06. " Iris brown, feet greenish grey, bill black." 

 This bird agrees well with a large series from various localities in northern 



South America, but has a rather long bill. For characters of S. a. albigularis, 



see Nov. Zool. xiii. (1906) p. 28. 



42. Synallaxis gujanensis gujanensis (Gm.). 



Motacilla gujanensis Omelin, Syst. -V"'. 1. ii. p. 988 (1788. — ex Daubenton, PL enl. tab. G86, fig. 2 : 

 " Le Rouge-queue, de Cayenne "). 



Nos. 874, 680. c? ad., ? jnv., 21. vi., 21. v. 06. " Iris yellowish brown (c? ad.), 

 greyish browu (? jnv.), bill greyish black." 



Lower parts pale bully brownish as in specimens from Cayenne, Para and 

 Sautareni, aud much less brightly coloured than in S. g. inornata Pelz. from the 

 Rio Madeira. 



43. Synallaxis mustelina Scl. 



SynaUaxis mustelina (Natterer MS.) Sclater, P. Z. S. London 1874, p. 14 (Rio Madeira — type in 



Vienna Museum, No. 201G7). 

 Synallaxis Jrenata Snethlage, Joiuu.f. Ornith. 1906. p. 523 (Santarem). 



No. 061. ? ad., 19. v. 06. "Iris brown, feet bluish grey, bill black."— 

 Wing 58 ; tail incomplete ; bill 17 J mm. 



This specimen agrees perfectly with the type (from the Rio Madeira) and 

 with several examples, collected by Bartlett on the Ucayali, Eastern Peru. All 

 these birds have a very distinct blackish loral stripe. This feature not being 

 mentioned in the published descriptions, Miss Snethlage was misled to rename 

 the species as S. jfrenata. 



44. Synallaxis rutilans amazonica Hellm. 



Cfr. supri, p. 14. 



Nos. 879, 905. 3 S ad., 21, 25. vi. 06. " Iris brown." 

 Agreeing well with our series from Sautarem and Eastern Pern. The top 

 of the head and the mantle are bright chestnut rufous, the occiput being but 



* Or*. BratU, ii. pp. 06, 170 (1808.— Salto do Giiao, K. Madeira). 



