396 BIRDS OF BRITISH GUIANA. 



margins ; sliaEts of tail-feathers dark and contrasting with the rest 

 o£ the tail ; fore-neck and breast bright pale yellow; abdomen white 

 with a tinge of pale grey on the flanks ; sides of body yellow ; 

 thighs and under tail-coverts pale lemon-yellow ; axillaries^under 

 wing-coverts, and inner margins of quills below bright sulphur- 

 yellow ; remainder of quill-lining hair-brown. 



Total length 107 mm., exposed culmen 11, wing 53, tail 45, 

 tarsus 18. 



Adult female. Similar to the adult male. Wing 43 mm., tail 42, 



The type described is in the McConnell collection and was 

 collected on the Abary River, July 1906, and the female on the 

 Bonasika River, 1911. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Gruiana. 



Eggs. Uiidescribed from British Guiana. 



Range in British Guiana. Supenaam River, Bartica, Bonasika 

 River, Abary River (McConnell collection) ; Annai, Quonga 

 ( Whitely). 



E.vtralimital Range. Surinam (Fenard). 



Habits. Unrecorded in British Guiana. 



597. Pachysylvia muscicapina. 

 Guiana Wood-bird. 



Hylophilus muscicapinus Sclater & Salvin, Nomencl. Av. Neotrop. 



p. 156, 1873 (Oyapoo, Cayenne) ; Gadow, Cat. B. Brit. Mus. viii. 



p. 308, 1883 (Bartica Grove) ; Salvin, Ibis, 1885, p. 204 (Bartica 



Grove). 

 ? Pachysylvia ferrugineifrons Beebe, Oir Search for a Wilderness, 



p. 322, 1910 (Aremu River). 

 PacJiysylvia muscicapina Brabourne & Chubb, B. S. Amer. i. p. 349, 



no. 3674, 1912 ; Beebe, Tropical Wild Life in British Guiana, 



p. 136, 1917 (Bartica Grove). 



Adult. Back, wings, and tail yellowish green; inner webs of 

 flight-quills hair-brown with whitish margins; crown of head and 

 nape dark ash-grey ; base of forehead, sides of face, throat, and 

 fore-neck pale fawn-colour ; lower breast and sides of body pale 

 ash-grey, inclining to white on the middle of the abdomen ; under 

 tail-coverts, axillaries, and under wing-coverts lemon-yellow; 

 under surface of flight-quills hair-brown with pale edgings ; 

 lower aspect of tail dull yellow. 



