74. MTIARCHTTS. 255 



Similar to M. ferox, but bill shorter ; outer margin of external 

 rectrix more distinctly white, and whitish margins of wing-coverts 

 and secondaries more strongly marked : whole length 7'0 inches, 

 wing 3-8, tail 3-7. Female similar. 



Hab. Western Peru and Ecuador. 



I cannot say that I am at all satisfied as to the claims of this 

 form for specific distinction. 



a. $ ad. sk. Tamiapampa, Peru (Stolzmanri). Sclater Coll. 



b. 5 ad. sk. Chirimoto, Peru {Stolzmanri). Sclater Coll. 



c. d. Ad. sk. Chirimoto, Peru (Stolzmann). Salvin-Godman Coll. 



(Authentic specimens.) 



9. Myiarchus pelzelni. 



Myiarchus pelzelni, Berl. Ibis, 1883, p. 139. 



Similar to M. ferox, but of much paler colouring ; back olive- 

 grey and not olive-brown ; cap rather lighter ; throat and breast 

 more whitish ; bill longer and paler in colour. 



Hab. S.E. Brazil and Cayenne. 



I am also not quite certain that this form is anything more than 

 a variety of M. ferox. Count v. Berlepsch has kindly supplied me 

 with one of his typical specimens, and a skin, apparently from 

 Cayenne, seems to agree quite well with it. 



a. Ad. sk. Bahia, Brazil. Sclater Coll. (One 



of the types.) 



b. Ad. sk. Oyapoc, Cayenne. Sclater Coll. 



10. Myiarchus phseonotus. 



Myiarchus phseonotus, Salv. et Goilm. Ibis, 1883, p. 207 ; Salv. Ibis, 

 1885, p. 298 (Brit. Guian.). 



Above greyish black, cap darker black ; wings and tail blackish, 

 wing-coverts and outer secondaries margined with dirty white : 

 beneath, throat and upper breast pale greyish : abdomen and under 

 wing-coverts pale sulphur-yellow ; bill and feet black : whole length 

 6 - 5 inches, wing 3*5, tail 3-5. Female similar. 



Hab. Interior of British Guiana. 



The dark-coloured back and black head distinguish this species 

 from M. ferox. 



a. $ ad. sk. Roraima, Brit. Guiana {Whitely). Salvin-Godman Coll. 



b, c. <$ ad. ; d. Merume Mts., Brit. Guiana Salvin-Godman Coll. 

 5 ad. sk. ( Whitely). (Types of the species.) 



e. 5 ad. sk. Merume Mts., Brit. Guiana Sclater Coll. 



( Whitely). 



11. Myiarchus phaeocephalus. 



Myiarchus phaeocephalus, Sclater, P. Z. S. 1860, p. 281 (Ecuador) ; 

 id. Cat. A. B. p. 233 ; Law/: Ann. L. X. Y. ix. p. 237 (Puna I.)' 

 Coues, Pr. Ac. Sc. Phil. 1872, p. 73 ; Ski. et Salv. Komencl. p. 52 ; 



