176 



AVIFAUNA 



feathers; undersurface dark greyish brown. Legs like in 

 the foregoing specimen. Wing 285 mm., bill 30 mm. 



9, 11 September 1907, like the preceding specimen, but 

 groundcolour somewhat lighter. Legs black. Wing 315 

 mm., bill 32 mm. 



cf, 12 September 1907, uppersurface brown, edges to the 

 feathers pale cinnamon, undersurface greyish white, barred 

 with brown, undertailcoverts pale cinnamon, barred with 

 brown. Bill dark grey, base lighter; legs pale bluish grey, 

 extremity of webs black. Wing 312 mm., bill 30 mm. 



9, 25 September 1907, similar to the preceding specimen. 

 Wing 295 mm., bill 31 mm. 



cf , 25 September 1907, dark brown ; head, nape, sides of neck 

 cinnamon, wingcoverts edged with cinnamon; undersur- 

 face mottled with pale cinnamon. Legs bluish grey, extre- 

 mity of feet and webs black. Wing 290 mm., bill 30 mm. 



(ƒ, 16 October 1907, nearly uniform dark brown, only a 

 few feathers with pale cinnamon edges. Bill dark bluish 

 grey, tip black, legs light bluish grey, extremity of webs 

 black. Wing 300 mm., bill 30 mm. 

 In all these birds the shaft of the third primary is 



more or less whitish, not strongly contrasting with the 



shafts of the first two primaries. 



156. Stercorarius longicaudus Vieillot. [Kleinste jager]. 



Stercorarius parasiticus, Saunders, C. B. Br. M. XXV, 

 1896, p. 334. 



Of this species we received three specimens in the first 

 plumage, killed also on the island of Texel: 

 (ƒ, 12 September 1906, uppersurface dark brown with 

 greyish white edges to the feathers, some of the wing- 

 coverts having a pale cinnamon tinge in their edges; breast 

 nearly white, sides of body, vent and undertailcoverts 

 white, barred with dark brown. Bill dark grey, legs grey, 

 extremity of feet and webs black. Wing 285 mm., bill 

 26 mm. 



Notes from the Leyden Museum, Vol. XXX. 



