424 BIRDS OF BRITISH GUIANA. 



Oryznhnrns hrevirostris Berlepsch, Nov. Zool. xv. p, 119, 1915 

 (Cayenne) ; Brabourne & Chubb, B. S. Amer. i. p. 3G3, no. 3719, 

 1912. 



Oryzoborus angolensis hrevirostris Beebe, Tropical Wild Life in British 

 Guiana, p. 136, 1907 (Bartica). 



" Brown-breasted Pygmy Grosbeak " (Beehe). 



Achflt male. General colour above including the back, wings, 

 and tail black, like the sides of the face, throat, breast, and sides 

 of the neck ; base of flight-quills and margins of the inner webs 

 white ; abdomen and under tail-coverts deeply coloured chestnut; 

 lower flanks and thighs black ; axillaries, under wing-coverts, and 

 inner edges of quills below white ; remainder of the quills below 

 dark brown ; lower aspects of the tail black. 



Total length 118 mm., exposed culmen 10, wing 55, tail 51, 

 tarsus 16. 



The male and female described were collected on the Ituribisi 

 River in February 1907. 



Adult female. Upper surface including the crown of the head, 

 sides of face, back, wings, and tail dark umber-brown ; inner 

 webs of flight-quills blackish brown, some of the inner edges white ; 

 tail also blackish brown ; throat, breast, and sides of body burnt 

 umber becoming paler and more fulvescent on the middle of the 

 abdomen; axillaries and under wing-coverts white. Wing 52 mm. 



Young male. Similar to the adult female but deeper in colour, 

 both on the upper and under surface. 



The young bird described was collected by the late Henry 

 Whitely at Bartica on the 27th of November, 1879, and is now 

 in the British Museum, Salvin-Godman collection. 



Breed'mg-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



llange in British Guiana. Ituribisi Rivor, Supenaam River, 

 Bartica, Abary River [McConnell collection); Mount Roraima, 

 Kamakusa, Bartica (WJutelg). 



Extralimital Range. Surinam (^Penard), Trinidad, Venezuela, 

 Colombia, Eastern Ecuador, North-east Peru. 



Habits. Mr. J. J. Quelch (Timehri (2) v. p. 85), who observed this 

 species in Georgetown, remarks : " In bushy outlying places where 

 the foregoing bird occurs, there will always be found the second 

 but smaller species of the same genus, known as the twa-twa slave 



