98G MESSRS. SCLATKR AND SALVIN ON PERUVIAN BIRDS. [DeC. 12, 



21. Synallaxis ORBiGNii (Reicli.). 



SynalJaxis humicohi, Lafr. et D'Oib. Mag. de Zool. I8-3G, p. 24 ; 

 D'Orb. Voy. Ois. p. 24.5, t. 1 /. f. 2. 



Bathmidurus d'orbiynyi, lleich. H. d. Sp. Orn. p. 163. 



Synallaxis crassirostris, Landb. J. f. O. 18fi5, p. 401. 



This species has been wrongly referred by Lafresnaye and D'Or- 

 bigny to the S. humicola of Kittlitz. It is readily distingnishable on 

 comparison by its thicker bill, rnfous throat-spot, and the clear rufous 

 colour of the outer webs of the external tail-feathers. D'Orbigny's 

 specimens were from the ravine of Falca, Western Bolivia. Tliose 

 described by Landbeck as 8. crassirostris were obtained by Leybold 

 in the vicinity of Mendoza. Mr. Whitely sends us two examples 

 from Arequipa. Sexes (as marked) alike. 



22. OcTHOiiCA LEUCOPHRYS. 



Fliivicola leucophrys, Lafr. et D'Orb. Syn. Av. in Mag. de Zool. 

 1837, p. CO ; D'Orb. Voy. p. 345, t. 38. f . 1 . 



Octhoeca leucophrys, Sclater, P. Z. S. 18.56, p. 28 ; Cab. etHeiu. 

 Mus. Hein. ii. p. 48. 



Two examples of this fine species from Islay and Ciiihuata. " Eyes 

 dark hazel; bill and feet black." In Sclater's 'Catalogue' Fluvi- 

 cola leucophrys is wrongly referred to a very different bird — the 

 Tyranmda setophayoides of Bonaparte. 



23. MUSCISAXICOLA ALBIFRONS. 



rtyonura alhifrons, Tsch. F. P. p. 167, t. 12. f. 2. 



Muscisaxicola albifrons, Ph. et Landb. Wiegm. Arch. 1865, p. 7S. 



One example of this bird from Salinas shows that Sclater has been 

 in error in uniting it to Tcenioptera aJpina, Jard., of Ecuador*. 

 The present species is much larger in size, in fact the giant of the 

 genus t. The upjjcr coloration is also paler, and the head slightly 

 rufescent, instead of being darker than the back. The front is white 

 in M. albifrons, which is not the case in M. alpina ; and the outer 

 webs of the outer tail-feathers are distinctly edged with white. The 

 species from Ecuador will therefore stand as M. alpina (Jard.). 

 The eyes of M. albifrons are noted as " dark hazel." 



24. Muscisaxicola mentalis (Lafr. et D'Orb.). 



Skins from Islay. " Female : eye dark hazel ; legs, toes, and 

 claws black." 



25. Muscisaxicola rubricapilla, Ph. et Landb. (PI. XLVI.) 



Muscisaxicola albilora, Lafr. Rev. Zool. 1855, p. 60(7). 

 Muscisaxicola rubricapilla, Ph. et Landb. \Yiegm. Arch. 1865, 

 p. 90 ; Sclater, Ibis, 1866, p. 58. 



Supra fuscescenti-cinerea, loris et regione oculari albescentibus ; 



* See P. Z. S. 1860, p. 78, and Ibis, 18GG, p. 57. 

 t M. albifrons : long, tota 9-0, ate 6-0, caud?e 3-8. 

 M. alpina : „ 6-8, ,, 5-0, „ 3'1. 



