PACHYSYLVIA. 397 



Total length 115 mm., exposed culmen 13, wing 63, tail 45, 

 tarsus 16. 



The specimen on which the description is based wtis collected 

 on the Supenaam River in 1910. 



Adult fetnale. Similar to the adult male. Wing 56 mm. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituiibisi River, Supenaam River, 

 '&2Lri\c^ (^McConnell collection); ^aviics. (Whitely); Aremu River 

 [Beehe). 



Eatralimital Range. Cayenne, Venezuela. 



Habits. The following note is quoted from Beebe (Our Search 

 for a Wilderness, p. 322) : — "A flock of tiny Brown-fronted Jungle 

 Vireos flew close to us, uttering a song like a diminutive alarm 

 clock. Francis shot one which was hardly more. than four inches 

 in length, olive-green above, paler below. Those who think that 

 all tropical birds are brightly coloured should see the great 

 number of species .of sober little fellows like these." 



598. Pachysylvia sclateri. 

 Sclater's Wood-Bird. 



Sylophilus sclateri Salvin & Godman, Ibis, 1883, p. 205 (Eomima, 



3500-6000 ft.). 

 Pachysylvia sclateri Brabourne & Chubb, B. S. Amer. i. p. 349, 



no. 3576, 1912. 



Adult male. Back, scapulars, and lesser upper wing-coverts pale 

 green ; greater upper wing-coverts, bastard-wing, primary- 

 coverts, outer aspect of quills, and tail grey ; inner webs of flight- 

 quills blackish brown with white margins; crown of head and 

 nape slate-grey ; sides of face pale grey ; base of forehead and 

 throat pale buffi; middle of breast ochreouS-yellow, becoming 

 green on the sides of the breast and sides of the body; middle of 

 abdomen and under tail-coverts inclining to white ; axillaries 

 lemon-yellow ; under wing-coverts sulphur-yellow ; under surface 

 of flight-quills dark brown with pale inner edges ; lower aspect 

 of tail greyish brown. 



