MYKMODERUS. 61 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Upper Takutu Mountains {McConnell 

 collection); Quonga River (^Whitehi). 



Extralimital Range. Venezuela, (/olombia. 

 Hahits. Unrecorded in British Guiana. 



387. Myrmoderus ferrugineus. 

 Cayenne Ant-Creepek. 



Turdus ferrugineus P. L. S. Miill. Syst. Nat. Suppl. p. 141, "1776 



(Cayenne). 

 Myrmonax cinnamomens Cab. in Schomb. Reis. Guian. iii. p. 084, 1848. 

 Myrmeciza cinnamomea Salvin, Ibis, 1885, p. 427 (Bartica Grove, 



Camacusa) ; Sclater, Cat. B. Brit. Mus. xv. p. 280, 1890 (Takutu 



River, Berbice). 

 Drymopliila ferruginea Brabourne & Chubb, B. S. Amer. i. p. 210, 



no. 2109, 1912. 



Adult male. General colour of the upper surface chestnut 

 including the head, back, wings, and tail ; lesser marginal upper 

 wing-coverts wliite, the remainder of the coverts above black 

 minutely tipped with white on the lesser series and broadly edged 

 at the tips with ferruginous buff on the median and greater 

 series, the primary-coverts ssimilar but the edgings very narrow ; 

 primary and secondary quills dark brown on the inner webs ; 

 lores and a line over the eye skirting the sides of the nape black, 

 the feathers on the sides of the nape tipped with white which 

 forms a conspicuous white streak ; cheeks, hinder face, throat, and 

 breast uniform black ; region in front and behind the eye bare ; 

 the feathers on the lower breast broadly margined with ash-grey, 

 while those on the sides of the breast are paler and inclining to 

 white ; middle of abdomen slate-grey ; sides of body and flanks 

 rust-brown j under tail-coverts chestnut ; under wing-coverts 

 black, the greater series brown fringed with white at the tips ; 

 quills below brown ; lower aspect of tail rufous-brown. 



Total length 150 mm., exposed culmen 19, wing 65, tiiil 52, 

 tarsus 27. 



The specimen from which the description is taken was collected 

 on the Mazaruni Uiver in October 1907. 



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

 white, instead of black, and the lower breast paler and inclining 

 to white. Wing 04 mm. 



Breeding-season. Unknown in British Guiana. 



