384 BIRDS OF BRITISH GUIANA, 



inner margins ; a naked space round the eye ; throat dull white 

 streaked with hrown ; breast, sides of the body, and thighs 

 ochreous-brown ; middle of abdomen and under tail-coverts white ; 

 axillaries and under wing-coverts buff ; under surface of flight- 

 quills greyish brown with pale buff margins ; lower aspect of tail 

 greyish brown. " Bill pale yellow above and below, darker at 

 the base of both mandibles ; legs, feet, and claws brown " (Cat. B. 

 Brit. Mus.) . 



Total length 229 mm., exposed culmen 17, wing 119, tail 94, 

 tarsus 32. 



Adult female. Similar to the adult male. Wing 118 mm. 



This species is not represented in the McConnell collection, and 

 the specimens described were collected by the late Henry Whitely 

 at Quonga in 1887 and are now in the British Museum, Salvin- 

 Godman collection. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Mount Roraima and Quonga ( Whitely) . 



Extralimital Range. Trinidad, Tobago, Venezuela, Colombia, 

 Ecuador, North Brazil. 



Habits. Unrecorded in British Guiana. 



586. Planesticus murinus. 

 Roraima Black-billed Thrush. 



Tardus murinus Salvin, Ibis, 18S5, p, 197 (Merume Mts., Roraima, 



3000-5000 ft.). 

 Planesticus murinus Braboume & Chubb, B. S. Amer. i. p. 345, no. 3534, 



1912. 



Adult. Crown of head, sides of face, back, wings, and tail 

 dusky-brown ; throat, breast, and sides of the body also dusky- 

 brown, but much paler than on the upper surface with broad 

 white streaks on the throat ; abdomen and thighs dark ash-grey ; 

 lower flanks and under tail-coverts white ; axillaries and under 

 wing-coverts cinnamon-buff; under surface of flight-quills hair- 

 brown ; lower aspect of tail greyish brown. " Bill black ; feet 

 dusky coral-red " ( Whitely^. 



Total length 206 mm., exposed culmen 17, wing 118, tail 90, 

 tarsus 32. 



