MYEMOTHERrLA- 27 



tail-coverts dusky without any pale margins to the feathers ; tail- 

 feathers slightly margined with whitish or sulphur-yellow j 

 a rather broad white streak below the eye; chin and throat white; 

 sides of the face and sides of the breast similar to the back ; middle 

 of the breast, abdomen, under tail-coverts, sides of the body, and 

 under wing-coverts yellow. 



Total length 61 mm., exposed culmen 13, wing 38, tail 16, 

 tarsus 17. 



Adult female. Similar to the adult male, but differs in having 

 the chin, throat, and upper breast yellowish buff, and the feathers 

 on the sides of the face and the top of the head edged with the 

 same colour. Wing 41 mm. 



The male and female described were collected on the Supenaam 

 River. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Supenaam B,i ver (Mc Connell collection) ; 

 Bartica, Kamakusa (Whitely). 



Extralimital Range. Surinam [Penard), Cayenne (^Gmelin), 

 Northern Brazil, Colombia, Ecuador, Peru. 



Habits. According to Schomburgk (Reis. Guian. iii. p. 688) 

 this bird lives in low brush on the outskirts of the woods, in the 

 fields cultivated by the natives, and in the neighbourhood of rivers. 



365. Myrmotherula surinamensis. 



Surinam Ant-bibd. 



Siffa surinamensis Grmel. Syst. Nat. i. p. 442, 1788 (Surinam). 



Formicivora quadrivittata Cab. in Schomb. Eeis. Guian. iii. p. 688, 1848. 



Myrmotherula surinamensis Salvin, Ibis, 1885, p. 425 (Camacusa); 

 Sclater, Cat. B. Brit. Mus. xv. p. 231, 1890 (Takutu Eiver, Cari- 

 mang Eiver) ; Brabourne & Chubb, B. S. Amer. i. p. 196, no. 1962, 

 1912. 



Adult male. General colour of the upper surface black with 

 white tips and edgings to the feathers, narrower on head, hind- 

 neck, flight-quills, and tail-feathers, and broader on the upper 

 back, where the bases of the feathers are white, and the upper 

 wing-coverts; sides of lower back and rump lead-grey; sides of 

 face and under surface white with narrow black shaft-streaks to 

 the feathers, the white portion inclining to grey on the sides of 



