PLANESTICOS. 383 



quills dark brown, paler on the inner edges ; ear-coverts pale brown 

 with paler shaft-streaks to the feathers ; breast, abdomen, and 

 sides of the body pale earth-grey, or dusky-grey ; throat broadly 

 streaked with white ; vent and under tail-coverts white, the 

 feathers more or less marked with pale brown ; axillaries, under 

 wing-coverts, and inner edges of quills bright rufous. 



Total length 215 mm., exposed culmen 17, wing 115, tail 91, 

 tarsus 29. 



Adult female. Similar to the adult male. Wing 115 mm. 



The male and female described were collected on the Demerara 

 River. 



A young bird, collected on the Ituribisi River, differs from the 

 adult on the upper parts in having pale shaft-streaks to the 

 feathers on the back, upper wing-coverts, and sides of the hinder 

 crown ; it differs on the under parts in having the throat dull 

 white, the breast and abdomen whitish spotted with brown and 

 tinged with pale rufous. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Upper Takutu Mountains, Ituribisi 

 River, Bartica, Abary River, Demerara River {McConnell col- 

 lection)' ; Georgetown and Bartica {Beehe} ; Annai, May 13, 

 1890 (Whitely) ; Georgetown {Quelch). 



Extralimital Range. Venezuela, Colombia, Eastern Brazil. 



Habits. Quelch states (Timehri (2) v. p. 72) that this species is 

 extremely common in Georgetown. 



, 585. Planesticus grymnoplithalnius. 



Bare-eyed Thrush. 



Tardus gymnophthalmus Cabanis in Schomb. Eeis. Guian. iii. p. 665, 

 1848 ; Seebohm, Cat. B. Brit. Mus. v. p. 212, 1881 ; Salvin, Ibis, 

 1885, p. 198 (Roraima, 3500 ft.). 



Planesticus gymnophthalmus Brabourne & Chubb, B. S. Amer. i. p. 345, 

 no. 3528, 1912. 



Almost adult male. General colour of the upper surface olive 

 including the top of the head, sides of the face, entire back, wings, 

 and tail ; some of the upper wing-coverts are slightly tipped with 

 buff ; inner webs of flight-quills hair-brown with buffy-white 



