576 BIRDS OF BRITISH GUIANA. 



to about one-linlE the length o£ the exposed culinen, tlie nostrils 

 are eKposed, and the cuhnen is not flattened. The wing is rounded, 

 the third, fourth-, and fifth primaries longest and equal, the second 

 about equal in length to the sixth, and the first about equal to the 

 ninth. The tail is rounded at the tip, the outer feather on each side 

 being about one-fourth shorter than the middle ones. The tarsus 

 exceeds the length of the exposed cuhnen by about one-third, and 

 the hind toe and claw are about equal in length to the middle toe 

 and claw. Coloration : male and female similar, but the latter 

 less bright. 



710. Icterus xanthornus. 



Yellow Oriole. 



Oriolus xanthornus Gmel. Syst. Nat. i. p. 391, 1788 (Venezuela). 

 Icterus xanthornus Cab. in Schomb. Kels. Gruian. iii. p. 680, 1848 ; 



Sclater, Cat. B. Brit. Mus. xi. p. 380, 1886 (Georsretown) ; Lloyd 



Price, Timehri (2) v. p. 02, 1891 (^nesting habits) ; Quelch, torn. cit. 



p. 86 (Georgetown) ; Brabourne & Chubb, B. S. Amer. i. p. 439, 



no. 4516, 1912. 

 Icterus xanthornus xanthornus Beebe, Tropical Wild Life in British 



Guiana, p. 137, 1917 (Bartica). 



" Common Yellow Hang-nest or Plaintain-bird " (Quelch). 



Adult mitle. General colour above and below yellow, including 

 the top of the head, sidesof face, entire back, upper tail-coverts, 

 lesser upper wing-coverts, sides of neck, breast, abdomen, sides of 

 body, under tail-coverts, and under wing-coverts ; wings and tail 

 black ; margins of inner secondaries and tips of niajor-coverts 

 white ; lores and short feathers round the eye black, like the chin, 

 throat, and fore-neck ; under surface of flight-quills dark brown 

 with whitish margins ; lower aspect of tail black, slightly edged 

 with white at the tip. 



Total length 192 mm., exposed culmen 17, wing 93, tail 83, 

 tarsus 25. 



The specimen described was collected on the Abary River. 



Adult female. Similar to the adult male but the coloration less 

 bright. Wing 81 mm. 



The female described was collected by the late Henry 

 Whitely at Quonga, November 1887, now in the British Museum, 

 Salvin-Godman collection. 



Breeding-season. Unknown in British Guiana, 



