PACHYRHAMPHUS. 275 



bastard-wing and primary-coverts uniform dark brown ; flight- 

 quills also dark brown, with bufFy-white edges more broadly on 

 the inner webs ; middle tail-feathers olive-brown slightly tipped 

 with buff, which increases in extent towards the outermost, where 

 it occupies about one-third of the entire feather, the remainder or 

 basal portion of the outer feathers dark brown ; a ring of short 

 white feathers encircles the eye ; the short feathers at the base of 

 the forehead pale rust-colour; throat, middle of breast, abdomen, 

 and under tail-coverts lemon-yellow ; axillaries and under wing- 

 coverts sulphur-yellow ; under surface of flight-quills pale brown 

 with buffy-white inner edges ; lower aspect of tail olive, sub- 

 terminally brown, and broadly tipped with buff. Wing 70 ram. 



The female described was collected at the Takutu Mountains in 

 1909. 



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, Supenaam River, Bartica, Essequibo River, Bonnsika 

 River [McConneli collection^ ; Mount Roraima, 3500 to 4000 ft. 

 ( Whitehj). 



Eiitralimital Range. Trinidad, Tobago, Venezuela, Colombia. 



Habits. According to Schomburgk (Reis. Guian. iii. p. 698) 

 this bird lives in the coast-woods and often visits the isolated 

 trees near the plantations. 



529. Pachyrhamplius atricapillus. 

 Black-capped Thick-bill. 



Lanius atricapillus Merrem, Aves Icon, et Descr. p. 26, 1784 (Surinam). 



Bachyrhamjihus atricapillus Cab. in Schomb. Keis. Guian. iii. p. 689, 

 1S48 ; Salvin, Ibis, 1885, p. 302 (Merume Mts., Camacusa, Bartica 

 Grove) ; Sclater, Cat. B. Brit. Mus. xiv. p. 347, 1888 (Bartica 

 Grove, Camacusa, Merume Mts.); Beebe, Our Search for a Wilderness, 

 p. 131, 1910 (Georgetown); Brabourne «& Chubb, B. S. Amer. i. 

 p. 316, no. 3232, 19i2. 



Adult nude Crown of the hoad black, with glossy blue-black tips 

 to the feathers ; hind-neck, back, sca[»ulars, and upper tail-covert.s 

 dark slate-groy, with more or less blue-black intermixed on the 

 upper back ; lesser and median upper wing-coverts blue-black, 

 the latter margined with white ; greater coverts and inner 



t2 



