( 322 ) 

 175. Philydor erythrocercus (Pelz.). 



AnahaUn erythrocercm Pelzeln, Sitzungsher. Akad. Wissmsch. Wien (nalh.-nalurwiis. CI.) xxiiv. 

 p. 105 (1859.—" Brasilia," ec. Barra do Rio Negro ; cf. Pelzeln, Zur Orn. Bras. i. p. 39). 



No. 252. S ad., Calama, 22. vii. 1907.— Wing 87 ; tail C>7 ■ bill IG mm. 



Nos!. 18, 50, 101, 306, 470, 504. ? i ad. and imm., Calama, 10, 16, 24. vi., 

 30. vii., 27. viii., 1. ix. 1907.— Wing 79—81 ; tail 62—68 ; bill 15—17 mm. 



"Iris brown or greyish brown, feet brown or grey, bill grey, npper mandible 

 darker." 



Agreeing with a typical specimen from Barra do Rio Negro (Manaos). 

 Examples from Para are not different either. This species, thongh for the first 

 time recorded from tlie Rio Madeira, has a wide range in Amazonia, being found 

 from Cayenne, British Guiana, and Para westward to the Punis and Jurua 

 Rivers. Messrs. Sclater & Salvin,* farthermore, mention it in their report on 

 Bartlett's Peruvian collections, but I have not yet examined specimens from this 

 country. 



176. Xenops genibarbis genibarbis 111. 



Xenops genibarbis lUiger, Prodr. Si/sl. Mamm. el Ai'. p. 213 (1811. — CameUS, Lower Amazons); 



cf. Hellmayr, Nor. Zool. xiv. p. 54. 

 X. g. genibarbis Hellmayr, Nor. Zool, xiv. p. 365 (Humaytha, Borba). 

 X. approxiniuns Pelzelu, Znr Orn. Bros. i. 1867. p. 41 (Silto Girao, Sao Joao do Crate, Borba, 



Rio Madeira, etc.). 



Nos. 109, 298. 66 ad., Calama, 25. vi., 30. vii. 1907.— Wing 66, 69; tail 

 50,54; bill 14i, 15 mm. 



No. 469. ? imm., Calama, 27. viii. 1907.— Wing 63; tail 48 ; bill 13J mm. 

 No. 1012. (J ad., Maruins, 21. vii. 1908.— Wing 66 ; tail 61 ; bill 14| mm. 

 " Iris brown, feet dark grey, bill dark grey or blackish." 

 Cf. my revision of the A', genibarbi.i group in Xoc. Zool. xiv. pp. 54-5. 



[177. Xenops rutilus tenuirostris Pelz. 



[Xenops rutilus Licbtenstein, Verz. Dnhl. lierliner Mus. p. 17 (1823. — Bahia).] 



Xenops tenuirostris Pelzeln, SilZHn;jsber. .ikad. Wiss. Wien {iiiatk.-nuturwiss. CI.) xxxiv. p. 112 

 (1859. — Salto do Girao) ; idem, Zur Orn. Bros, i. p. 41 (ut supri). 



Left bank of the Rio Madeira : Halto do (Jir.io (Natterer). 



The type in tiie Vienna Museum is still nni([ne. It is an inunature male 

 and measures : wing 63i ; tail 45 mm. 



A', i: tenuirostris is nearest to A', r. Iietenirtis (!al). Hi, Heine,f but the third 

 and fourth rectrices (from ontside) are wholly black, the fifth has the inner weh 

 black, and there is also a black stripe along the inner web of the penultimate 

 tail-feather. Besides, the bill is much weaker and slenden-r. This, however, 

 may be due to immaturity, and should be confirmed by a series from the Rio 

 Madeira. Yet I believe there can be no question of A. /■. tenuirostris being a 

 valid form. 



('f. the review of the geographical races of X. nttilus in Xoc. Zool. xv. 1908. 

 pp. 62-3.] 



* Ptoc. Zuol. Soc. Land. 1873. p. 269. 



f X hitcruTus Oalianis & Heine, Mus. Hein. ii. p. S.^ (1S59.— Colombia). 



