PLANESTICUS. 381 



This specimen was collected at Mount Roraima by Mr. McConnell 

 during his expedition there in 1898. 



The young male difEers chiefly in having the chin, throat, and 

 breast spotted with black, and the upper wing-coverts tipped with 

 rufous. 



Breeding-season. Unknowil. 



Nest. Unrecorded. 



Eggs. Undescribed. 



Range confined to British Guiana. Mount Roraima {McConnell 

 collection) ; Mount Roraima ( Whitely) . 



Habits. Unrecorded. 



582. Planesticus fredericki. 



Frederick's Sabian Thrush. 

 (Piute V. fig. 1.; 



Turdus fumiqatus (nee Licht.) Cab. in Schomb. Keis. Guian. iii. p. 665, 



1848 ; Seebohm, Cat. B. Brit. Mus. v. p. 216, 1881 ; Seebohm, Cat. 



B. Brit. Mus. V. p. 216 (part), 1881 ; SaWin, Ibis, 1885, p. 198 



(Bartioa Grove, Camacusa). 

 Planesticus fumigatus Brabouvne & Chubb, B. S. Amer. i. p. 346, 



no. 3536 (part), 1912 ; Beebe, Tropical Life in British Guiana, 



.p. 135, 1917 (Bartica). 

 Planesticus frederichi Chubb, Bull. Brit. Ornith. Club, xxxviii. p. 53, 



April 2, 1918 (Bai-tica). 



Adult. General colour, both above and below, ochreous, paler 

 on the under surface ; inner webs o£ flight-quills blackish with 

 rufous inner margins ; throat more or less streaked with white ; 

 axillaries and under wing-coverts dull cinnamon-rufous ; flight- 

 quills below hair-brown with rufous inner edgings ; lower aspect 

 of tail paler than on the upper surface. 



Total length 217 mm., exposed culmen 17, wing 120, tail 93, 

 tarsus 31. 



The specimen from which the desciiption is taken was collected 

 on the Abary River in September 1906. 



Breeding-season, Unknown. 



Nest. Unrecorded. 



Eggs. Undescribed. 



Range confined to British Guiana. Upper Takutu Mountains, 

 Ituribisi River, Supenaam River, Bartioa (McConnell collection); 

 Georgetown (Quelch) ; Bartica, Kamakusa (Wkiteli/) ; Bartica 

 (Beebe). 



