74 BIKDS OF BRITISH GUIANA. 



395. Formicarius colma. • 



Boddabrt's Ant-Theush. 



Formicarius colma Boddaert, Tabl. PI. Enl. p. 44, 1783 (Cayenne) ; 



Brabourne & Chubb, B. S. Amer. i. p. 214, no. 2155, ;912. 

 Myiothera colma Cab. in Schomb. Eeis. Gruian. iii. p. 686, 1848. 

 Formicarius nigrifrons Gould, Ann. & Mag. Nat. Hist. (2) xvi. p. 344, 



1855 (Chamicurros, on the eastern side of Peru) ; Salvin, Ibis, 1885, 



p. 429 (Camacusa, Bartica Grove) ; Sclater, Cat. B. Brit. Mus. xv. 



p. 303, 1890 (Demerara). 



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

 and tail bronze-brown ; outer edge o£ bastard-wing pale orange 

 like the basal portion of the primary-quills, terminal portion of 

 the primary and secondary quills dark brown ; tail-feathers 

 blackish towards the tips ; fore part of head glossy black ; crown 

 of head chestnut with black edges to the feathers, occiput and 

 nape pale chestnut; sides of face, throat, and breast black fading 

 to brown on the abdomen, flanks, and under tail-coverts; axillaries 

 white at the base with blackish tips ; inner and greater series of 

 under wing-coverts blackish, the outer series and basal portion 

 of quill-lining pale orange ; apical portion of quill-lining and 

 lower aspect of tail dark brown. 



Total length 150 mm., exposed culmen 17, wing 86, tail 49, 

 tarsus 28. 



The male described was collected on the Supenaam River in 

 1910. 



Immature male. General colour above and below rust-brown ; 

 crown of head, nape, and feathers round the eye chestnut, darker 

 on the middle of the crown; cheeks, chin, and throat ferruginous, 

 each feather minutely tinged with black. The black increases as 

 age advances, and the throat becomes uniform black in the adult 

 male. 



The immature male from which the description is taken has no 

 exact locality. 



Adult female. Hinder crown, nape, back, wings, and tail 

 similar to those of the adult male, but differs, however, in having 

 the lores and throat white, breast dark slate-grey, becoming paler 

 and inclining to white on the abdomen. Wing 85 mm. 



The female described was collected on the Kamakabra River in 

 1911. 



Immature female. Differs from the adult female described in 



