VAVASOURIA. 321 



mottHngs do not appear, but the feathers have grey margins 

 which are sometimes tinged with yellow. (!!aruncle 75 mm. 



The specimen described above was collected on the Cotinga 

 River. 



The young male in its first plumage is similar to the adult 

 female. 



Breedin<i-season. Unknown in British Guiana. 

 Nest. Unrecorded in British Guiana. 

 Eggs. Undescribed from British Guiana. 



Range in British Guiana. Cotinga River, Supenaara River 

 (McConnell collection) ; Mount Roraima and Burro- Burro River 

 {Brown) ; ;Mount Roraima, Merume Mountains, Kamarang 

 River {Whitelg) ; Upper Berbice River, Great Falls Demerara 

 River {Quelch). 



Extralimital Range. Cayenne {Boddaert) ; Surinam {Bartlett) ; 

 Venezuela. 



Habits. Brown (Canoe and Camp Life, p. 181) gives the 

 following note on his experience of this bird on the Burro-Burro 

 River: — " On the way we heard numbers of Bell- birds (Casmo- 

 rgJinclius c ar uncidut u s^ c^iWmg^ in the surrounding forest; wishing 

 to obtain one, I landed, and, guided by their calls to their vicinity, 

 stood for some time under a tree in which one was })erched before 

 I discovered its whereabouts. The one 1 shot proved to be a 

 male in full plumage, of a snow-white colour, with black beak 

 and eyes, and with a black, leathery excrescence of nearly an inch 

 in length, rising up from the top of the base of its bill. When 

 close to these birds the sounds they produce are of two kinds — one 

 resembling the word Dor-ong and the other Kong-kag^ the latter 

 syllable of each being prolonged. There is a sort of ventriloquism 

 about the utterance of Dor-ong, which is made when the bird holds 

 its head up, that renders it almost impossible to find the exact 

 whereabouts of the bird when using tiiis form of call ; when, how- 

 ever, it puts its bill and head downwards, and calls A'ong-kag, it 

 can be seen at once." 



Concerning this l)ird Schomburgk wrote (Reis. Guian. i. p. 480): 

 " I once tried a long shot at an individual of this species. It 

 was resting and singing on a dead twig of a very tall tree, but 

 the bird flew away unhurt. I was nuicli annoyed at having failed, 

 but the Indian suggested that 1 should wait, as the bird, ho said, 

 VOL. II. Y 



