404 BIKDS OF BRITISH GUIANA. 



603. Dendroeoa sestiva. 



Ybllow Wakbler. 



Motacilla mstiva Gmel. Syst. Nat. i. p. 996, 1789 (Guiana). 



Dendroeca mstiva Salvin, Ibis, 1 885, p. 202 (Bartica Grove) ; Sharpe, 

 Cat. B. Brit. Mus. x. pp. 273, 644, 1885 (Bartica Grove, Novem- 

 ber) ; Quelch, Timehri (2) v. p. 79, 1891 (Georg;etown) ; id. op. cit. 

 X. p. 261, 1896 (migration) ; Brabourne & Chubb, B. S. Amer. i. 

 p. 354, no. 8620, 1912. 



Dendroeca mstiva aestiva Beebe, Tropical Wild Life in British Guiana, 

 p. 136, 1917 (Bartica). 



"Yellow Summer- bird/' "Golden Warbler," "Summer 

 Yellow-bird," "Canary" {Quelch). 



Adult male. General colour above yellowish green including the 

 back, outer aspect of the wing, and upper tail-coverts, paler and 

 inclining to yellow on the rump ; inner webs of greater upper 

 wing-coverts and flight-quills blackish brown broadly margined 

 with yellow on the latter ; middle tail-feathers similar to the back, 

 the lateral ones have the inner webs almost entirely yellow ; fore 

 part of head, sides of the face, throat, and entire under surface 

 bright yellow including the under tail-coverts, axillaries, under 

 wing-coverts, and inner edges of quills below, the feathers on the 

 breast, abdomen, and sides of the body have the shaft-streaks 

 chestnut ; under surface of quills greyish brown ; lower aspect of 

 tail yellow, darker on the outer webs and at the tips of the 

 feathers. 



Total length 110 mm., exposed culmen 10, wing 64, tail 45, 

 tarsus 19. 



The specimen from which the description is taken was collected 

 at Bartica in 1911. 



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

 but paler and inclining to sulphur-yellow below without any 

 chestnut shaft-lines. Wing 59 mm. 



Breeding-season. Unknown in British Guiana. 



JV^est. Unrecorded in British Guiana. 



Hggs. Undescribed from British Guiana. 



Range in British Guiana. Bartica, Kamakabra River, Abary 

 River, Great Falls Demerara River {McConnell collection) ; 

 Bartica {Whitely); Georgetown {Quelch) ; Berbice River (jBrtoft 

 Museum) . 



