36 BIRDS OF BRITISH GUIANA. 



black fringed with white ; under tail-coverts like the abdomen but 

 broadly margined with white. 



Tofal length 86 mm., exposed culmen 15, wing 57, tail 29, 

 tarsus 17. 



Adult female. Upper surface, including the crown of the head, 

 entire back, and tail, mouse-grey : outer aspect of wing tinged with 

 rufous ; inner webs of flight-quills dark brown with buffy -white 

 edges ; lores, a line over the eye extending on to the sides of the 

 crown, and sides of the face grey ; throat whitish; breast, abdo- 

 men, sides of the body, under tail-coverts, under wing-coverts, 

 and inner edges of the flight-quills below bufi'. Wing 53 mm. 



The female described was collected at Bartica by H. Whitely on 

 the 1st November, 1879 — now in the British Museum, Salvin 

 Godman collection. 



Breeding-season. Unknown in British Guiana. 



JS^est. Unrecorded in British Guiana. 



Tlggs. Undescribed from British Guiana. 



liange in British Gttiana. Supenaam River, Bartica, Berbice, 

 Arwye Creek, Tiger Creek (^McConnell collection^ ; Bartica, 

 Kamakusa, Mount Roraima (Wliitely). 



Extralimital Range. Surinam (Penard), Cayenne {Sclater <^' 

 Salvin) . 



Habits. Unrecorded in British Guiana. 



371. Poliolsema g-uttata. 

 Rufous-bellied Ant-bird. 



Ilyrmothera guttata Vieill. Gal. Ois. i. p. 2;31, pi. 155, lS2o (Cayenne). 



Jihoj)ote?'j)e guttata Cab. in Schomb. Reis. Guian. iii. p. 688, 1848. 



Myrmotherula guttata Salvin, Ibis, 1885, p. 425 fCamacusa, Bartica 

 Grove); Sclater, Cat. B. Brit. Mus. xv. p. 232, 1890 (Bartica 

 Grove, Roraima, Camacusa) ; Brabourne & Chubb, B. S. Amer. i. 

 p. 197, no. 1967, 1912. 



Adidt male. Crown of head, hind-neck, upper back, sides of the 

 face, throatj and breast dark slate-grey, darker on the head and 

 paler on the throat ; the feathers of the back are white at the 

 base, subapically marked with black and rust-brown at the tips ; 

 rump rust-brown with rufous tips to the feathers; lesser upper 

 wing-coverts greyish brown ; median and greater wing-coverts 

 black tipped with fulvous ; bastard-Aving dark brown, the outer 

 margins of the feathers fulvous ; primar}- coverts and quills dark 

 brown, with rust-ljrown on the edges of the outer webs of the 



