62 BIRDS OF BRITISH GUIANA, 



Nest. Unrecorded in British Guiana. 



I^ggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Snpenaam River, 

 Mazaruni River, Bartica, Kamaka1)ra River, Arawai River 

 (^McConnell collection^ ; Bartica, Kauiakusa, Takutu River 

 {Whitehj) ; Berbice {British Museum). 



Extralimital Range. Cayenne (Mf>ller), Northern Brazil. 



Habits. According to Schomburgk (Reis. Guian. iii. p. 684) this 

 bird frequents the woods on the coast, where it hops about in the 

 low bush or on the ground in search of food. 



388. Myrmoderus atrothorax. 



Black-throated Ant-Creeper. 



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

 Myrmeciza atrothorax Salvin, Ibis, 1885, p. 428 (Menime Mts.) ; 



Sclater, Cat. B. Brit. Mus. xv. p. 282, 1890 (Merume Mts.). 

 Drymophila atrothorax Bi-abourne & Chubb, B. S. Amer. i. p. 210, 



no. 2113, 1912. 



Adult male. Head and back bronze-brown ; wings rather darker 

 than the back and inclining to smoky-black, with minute white 

 spots a-t the tips of the upper wing-coverts and those round the 

 edge of the wing both above and below; inner webs of the primary 

 and secondary quills dark brown, somewhat paler on the inner 

 margins ; dorsal feathers white towards the base which forms a 

 concealed white patch on the back ; rump and upper tail-coverts 

 dull black, very loose and fluffy in texture ; tail also black, both 

 above and below; sides of face, sides of neck, abdomen, and flanks 

 dark slate-colour ; throat and fore-neck black,, as are also the 

 under tail-coverts ; under wing-coverts dusky grey. 



Total length 143 mm., exposed culmen 17, wing 57, tail .56, 

 tarsus 26. 



Adult female. Similar to the adult male above, but differs below 

 in having the tliroat white and the remainder of the under surface 

 for the most part bright ferruginous. Wing ,55 mm. 



The male and female from which Um above descriptions are 

 taken were collected on the Supenaam River in 1910. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Supenaam Iiiver, Kamakabru River, 



