82 BIRDS OF BRITISH GUIANA. 



Range in British Guiana. Kamakusa, Takutu River, Quonga 

 River ( Whitely). 



Extralimital Range. Cayenne (Boddaert), North Brazil. 

 Habits. Unrecorded in British Guiana. 



400. Grallaria brevicauda. 



Little Ant-Thrush. 



Formicarius hrevicauda Bodd. Tabl. PI. Enl. p. 44, 1783 (Cayenne). 



Calohathris tinniens Cab. in Schomb. JKeis. Guian. iii. p. 686, 1848. 



Chrallaria brevicauda Salvin, Ibis, 1885, p. 430 (Camacusa, Bartica 

 Grove) ; Sclater, Cat. B. Brit. Mns. xv. p. 321, 1890 (Camacusa, 

 Bartica Grove) ; Brabourne & Chubb, B. S. Amer. i. p. 218, 

 no. 2202, 1912. 



Adult male. General colour above ru£ous-brown including the 

 head, back, wings, and tail ; inner webs o£ the primary and 

 secondary quills dark brown with paler margins ; ear-coverts like 

 the back ; throat and under surface white edged with greyish 

 brown on the breast and more broadly on the sides of the breast 

 and sides o£ the body ; axillaries and under wing-coverts cinna- 

 mon-rufous, quill-lining also tinged with the same colour, apical 

 portion of the quills below brown like the lower aspect of the tail. 



Total length 129 mm., exposed culmen 20, wing 80, tail 30, 

 tarsus 40. 



The male described was collected at Bartica. 



Adult female. Similar to the adult male but rather smaller. 

 Wing 77 mm. 



Breeding-season. Unknown. 



JHest. Unrecorded. 



Eggs. Undescribed. ' 



Range in British Guiana. Upper Takutu Mountains, Ituribisi 

 River, Bartica, Kamakabra River, Makauria River, Arwye River, 

 Tiger Creek, Arawai River (McConnell collection); Bartica, 

 Kamakusa (Whitelg). 



Extralimital Range. Cayenne {Boddaert), Colombia, Ecuador, 

 Peru. 



Habits. Unrecorded in British Guiana. Although Schomburgk 

 met with this species he makes no remark in regard to its 

 habits. 



