228 BIRDS OF BRITISH GUIANA. 



The bird described was collected on the Abary River in July 

 190G. 



Breedincf-season. Unknown in British Guiana. 



Hest. Unrecorded in British Guiana. 



Eggs. Undescribed from Briti.-h Guiana. 



Range in British Guiana. Takutu River^ Abary River {Mc Con- 

 veil collection) ; Bartica, Kamakusa ( Whitely). 



Extralimital Range. Venezuela, Testigos and Margarita Islands, 

 Colombia. 



Habits. Unrecorded in British Guiana. 



500. Myiarclius ferox. 



Fierce Flycatcher. 



Mvacicapa ferox Gmel. Syst. Xat. i. p. 93-1, 1789 (Cayenne). 



My iarcJiKs ferox Cab. in Schomb. Eeis. Guian. iii. p. 700, 1848; W. L. 



Sclater, Ibis, 1887, p. 818 (Maccassema, Pomeroon River) ; P. L. 



Sclater, Cat. B. Brit. Mus. xiv. p. 253, 1888 (Bartica Grove, Caraa- 



cusa) ; Bi-aboin-ne & Chubb, B. S. Amer. i. p. 302, no. 3085, 1912 ; 



Beebe, Tropical Wild Life Brit. Guiana, p. 131, 1917. 

 Myiorchiis tyranmdus (nee Mull.) Salvin, Ibis, 1885, p. 298 (Camacusa, 



Bartica Grove). 



Adult female. Back, scapulars, and lesser upper winff-coverts 

 olive ; crown o£ head and ear-coverts dark brown ; wings al-so 

 dark brown, with pale margins to the median and greater upper 

 wing-coverts and outer webs of the flight-quills, inner webs of the 

 last margined with whitish : tail uniform dark brown ; throat 

 and breast ash-grey ; abdomen, under tail-coverts, axillaries, and 

 under wing-coverts lemon-yellow ; under surface of quills brown 

 with pale inner edges ; lower aspect of tail pale brown. 



Total length 173 mm., exposed culmen 21, wing 87. tail 87, 

 tarsus 22. 



The specimen from which the description is taken was collected 

 on the Supenaam River in 1910. 



Adult male. Similar to the adult female but rather larfjer. 

 ^'ing 92 mm. 



Breeding-season. Unknown in Briti.sh Guiana. 



I\est. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Upper Takutu i\Lountiiins, Supenaam 

 River, Bartieii, Kanuikaltra River, Great Falls Demerara River 



