76 BIRDS OF BRITISH GUIANA. 



Formicarius crissah's Sclater, Cat. B. Brit. Mus. xv. p. 305, 1890 

 (Carimang Kiver, Takutu Kiver) ; Brabourne & Chubb, B. S. Amer. 

 i. p. 214, no. 2158, 1912. 



Adult. General colour of the upper surface bronze-brown in- 

 cluding the wings, back, and tail ; primary-coverts somewhat 

 darker ; inner webs of the primary and secondary quills dark 

 l)rown, pale orange at the base; tail blackish towards the tip; the 

 upper tail-coverts inclining to rufous ; the feathers of the head 

 have dark centres which impart a scalloped appearance ; lores, 

 a narrow line over the eye, cheeks, and entire throat black with a 

 white spot in the middle of the lores ; hinder face, ear-coverts, 

 and sides of neck cinnamon ; breast and lower flanks slate-grey 

 becoming paler and inclining to white on the middle of the abdo- 

 men ; axillaries and sides of the body silky- white with dark tips to 

 the feathers; under tail-coverts pale chestnut; under wing-coverts 

 dark brown, the marginal series and basal portion of flight-quills 

 below pale orange-buff, apical ])ortion of quills below pale brown; 

 under surface of tail dark brown with paler edges at the tips. 



Total length 104 mm., exposed culmen 21, wing 90, tail 49, 

 tarsus 34. 



The bird described above was collected on the Bonasika River. 



The female of this species is not represented iu the McConnell 

 collection, but according to a specimen in the British Museum 

 from Kamakusa, collected and sexed by Whitely, it would appear 

 to be similar to the adult male. Wing 88 mm. 



A young bird from the Anarica River, collected in 1913, is 

 similar on the upper surface to the adult described, but differs in 

 having scarcely any black on the lores, the fore part of the face 

 and throat dark brown with white bases and pale shaft-lines to 

 the feathers, the cinnamon on the hinder face and sides of the 

 neck only faintly represented, and the under wing-coverts not 

 full}- developed. The lower mandible and tip of the upper are 

 almost white. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Supenaam River, 

 Kamakabra River, Bonasika River, Anarica 'River' (McConnell 

 collection) ; Mount Roraima {SchomhurgJc) : Takutu River, Kama- 

 rang River, K;imakusa {Whit^h/). 



