60 BIRDS OF BRITISH GUIANA. 



tail is rounded and graduated and about three-fourths the 

 length of the wing. Coloration : male and female different. 



Key to tlie Species. 



A. Abdomen Avhite. 



a. Throat black 3f. 7onf/?'pes S , ip- QO. 



h. Throat ferruginous 31. longipes $ , p. 60. 



B. Abdomen chocolate-brown. 



c. Throat black M. ferriigineus 6 , ^- Q\. 



d. Throat white M..fer7'itgineu$ $ , p. 61. 



C. Abdomen blackish brown. 



e. Throat black M. atrotliorax S , "p. ^1. 



f. Throat white tinged with bright fawn- 



eolour M.. atrothorax 2 > V- ^■^' 



386. Myrmoderus longipes. 

 Swainson's Ant-Creeper. 



Drymophiln longipes Swains. Zool. Journ. ii. p. 152, 1825 (Trinidad) ; 



Brabourne & Chubb, B. S. Amer. i, p. 209, no. 2105, 1912. 

 Ilyrmeciza longipes Sclater, Cat, B. Brit. Mus. xv. p. 278, 1890 



(Quonga). 



Adult male. Upper surface bright chestnut including the head, 

 hack, wings, and tail ; the feathers on the upper back more or 

 less white towards the base and forming a somewhat concealed 

 patch ; inner webs of primary and secondary quills brown with 

 narrow rufous edgings; forehead, sides of crown, and sides of the 

 nape grey, the feathers at the base of the forehead have black 

 shaft-lines; lower sides of face, throat, and foie-neck dark slate- 

 grey ; middle of abdomen inclining to white ; flanks fulvous- 

 brown; under tail-coverts bright cinnamon ; under wing-coverts 

 whitish ; under surface of quills brown with rufous edgings ; 

 lower aspect of tail chestnut like the upper surface. 



Total length 140 mm., exposed culmen 16, wing &^j tail 53, 

 tarsus 2^. 



Adult female. Differs from the adult male in having the throat 

 whitish and fore-neck pale rufous, instead of black, the brenst 

 whitish, instead of slate-grey, and a black spot on the subapical 

 portion of the upper wing-coverts. Wing 64 mm. 



The male and female described were collected in the Upper 

 Takutu Mountains in 1909. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



