SAKESPHORUS. 15 



wing-coverts black tipped, or edfjed ^Yith white ; quills blackish 

 brown, Nvith pale outer webs to the primaries and white edgings 

 to the innermost secondaries ; edges to the inner webs o£ both 

 primary and secondary quills white ; upper tail-coverts and tail 

 black tipped with white, with a white s])ot on the outer web of 

 the outermost pair olc tail-feathers and white edges to some of the 

 middle feathers ; abdomen, sides of breast, sides of body, and 

 under tail-coverts pale slnte-urey; under wing-coverts white. 

 Total length 143 mm., culmen 20, wing 76, tail 61, tarsus 25. 

 Adult female. Differs from the male in having the crown of 

 th«» head chestnut, the back rufous-brown, and the breast ochreous 

 with black shaft-lines to the feathers. Wing 72 mm. 



Immature male. Very similar in colour to the female, but dis- 

 tinguished partly by its black crest and also by the approach of 

 black feathers on the throat. 



The male and female birds described were collected at Bartica 

 in 1911, and the immature male on the Abary River, July 1906. 

 JBreedlnii-seasoii. Unknown in British Guiana. 

 i\W. Unrecorded in British Guiana. 

 Ecf<js. Undescribed from British Guiana. 



liange in British Guiana. Upper Takiitu Mountains, Ituribisi 

 River, Supenaam River, Bartica, Bonasika River, Abary River, 

 Anarica River (McConnell collection) ; Quonga, Annai, Rupunini 

 River {Whitely). 



Extralimital Range. Cayenne (Linnt), Trinidad, Venezuela. 

 IIal>it,i. Schomburgk states (Reis. Guian. iii. p. 6^7) that tin* 

 bird was fond of the Avicennien-biish near the coast, anil that it* 

 life and habits are similar to those of Tiiamnopkilus major, p. 10. 

 Jjatham, in his 'General Synoj)sis,^ ii. })t. i. p. 53, writes: — 

 "These inhabit Ca/jenne, where they hi-eed several times in a 

 year, and lay three eggs at a time. Their cry is like that of a 

 young chicken. Feeds on ants." 



