piTYXtJS. 445 



and also a bopk at the tip. The wing is rounded, the second, 

 third, fourth, and fifth primaries are longest and subequal, the 

 first about equal in length to the seventh. The tail is rounded at 

 the tip and about four-fifths the length of the wing. The tarsus 

 exceeds the length of the middle toe. and claw by about one- 

 fourth. Coloration : male and female similar, but the latter less 

 bright,. 



631. Pitylus grossus. 



White-throated Kbrnel-eatek. 



Loicia grossa Linn. Syst. Nat. i. p. 307, 1766 (Cayenne). 



Pitylus grossus Cab. in Schomb. Eeis. Gruian. iii. p. 677, 1848 ; Salvin, 

 Ibis, 1885, p. 213 (MerumS Mts., Camacusa, Bartica Grove) ; 

 Sclater, Cat. B. Brit. Mus. xi. p. 303, 1886 (Camacusa, MerumS 

 Mts., Bartica Grove) ; Brabourne & Cbubb, B. S. Amer. i. p. 370, 

 no. 3769, 1912 ; Beebe, Tropical Wild Life in British Guiana, p. 136, 

 1917 (Bartica). 



Adult male. Crown of head, hind-neck, entire back, upper tail- 

 coverts, scapulars, upper wing-coverts, and outer aspect of quills 

 slate-blue ; flight-quills blackish, paler on the inner edges ; tail 

 black ; lores, sides of face, and sides of throat black, the last 

 continued in a semicircular .band across the fore-neck ; chin and 

 throat white like the axillaries and under wing-coverts ; breast, 

 abdomen, sides of body, and under tail-coverts slate-blue darker 

 on the last ; under surface of flight-quills dark brown, paler on 

 the edges ; lower aspect of tail black. 



Total length 198 mm., exposed culmen 17, wing 95, tail 80, 

 tarsus 22. 



The bird on which the description is based was collected on the 

 Makauria River in August 1910. 



Adult female. Similar to the adult male on the upper surface, 

 but not quite so bright. It differs in the absence of black on the 

 lores, sides of face, sides of the throat and band on the fore-neck 

 which is replaced by grey, the white throat less extended ; breast 

 and abdomen ochreous-brown. Wing 95 mm. 



The female described was collected at Bartica in 1912. 



Breeding-season. Unknown in British Guiana. 



Nest. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Ituribisi River, Supenaam River, 

 Bartica, Kamakabra River, Makauria River, Abary River, 



