22 BIRDS OF BRITISH GUIANA. 



Adult female. Fore part of head bright rust-colour which fades 

 away on the nape into the olive-brown of the back ; outer aspect 

 of the wings and tail more rufous-brown, inner webs' of flight- 

 quills dark brown with buify- white edges ; breast and sides of the 

 body ochreous-brown ; throat and middle of abdomen whitish; 

 under tail-coverts and edge of wing pale fulvous ; under wing- 

 coverts white. Wing 62 mm. 



The female described was also collected by Mr. McConnell on 

 Mount Roraima in October 1898. 



Breed'inri-seaso7i. Unknown in British Guiana. 



]^est. Unrecorded in British Guiana. 



Eygs. Undescribed from British Guiana. 



Range in British Guiana. Mount Roraima, Makauria River 

 {^McConnell collection) ; Mount Roraima, 3500 ft. ( Whitely). 



Extralimital Range. Surinam (^Penard). 



Habits. Unrecorded in British Guiana. 



361. Dysithamnus murinus. 



Mouse-coloured Bush-bird. 



ThamnopJiilus murinus, Sclater& Salvin, P. Z. S. 1867, p. 756 (Marabi- 

 tanas) ; Salvin, Ibis, 1885, p. 423 (Bartica Grove, Camacusa, 

 Merume Mts.) ; W. L. Sclater, Ibis, 1887, p. 318 (Maccasseema, 

 Pomeroon River) ; Sclater, Cat, B. Brit. Mus. xv. p. 195, 1890 

 (Mai-akka, Takutu River). 



Dysithamnus murinus Brabourne & Chubb, B. S. Amer. i. p. 195, no. 

 1952, 1912. 



Adidt male. General colour above, including the head, back, 

 and tail^ bluish slate-colour, with concealed white bases to the 

 feathers on the back'; lesser upper wing-coverts edged with white, 

 the greater coverts inclining to olive-brown and are also margined 

 with white ; primary-coverts and quills dark brown, edged with 

 olive on the outer webs and white on the inner webs of the latter, 

 the inner secondaries are very narrowly edged with white at the tips ; 

 tail-feathers tipped with white ; sides of face pale slate-grey with 

 white shaft-lines to the feathers ; middle of throat, middle of 

 breast, and middle of abdomen dull white ; sides of neck, sides of 

 body, flanks, thighs, and under tail-coverts slate-grey ; under 

 wing-coverts white. 



Total length 131 mm., exposed culmen 17, wing 62, tail 51, 

 tarsus 22. 



