RICHARDSON S SKUA. 



489 



NATATORES. 



LARIDjE. 



RICHARDSON^S SKUA. 

 Lestris Richardsonii of Svfainson. 



Larus parasiticus, 

 ,, crepidatiis, 

 ,, parasiticus, 

 ,, crepiilatus, 

 ,, parasiticus, 

 crepidatus. 



Penn. Brit. Zool. vol. ii. p. 179, adult. 

 „ jj . j> . V 178, young. 

 Mont. Ornith. Diet, adult. 

 ,,. „ young. 

 Bewick, Brit. Birds, vol. ii. p. 250, adult. 

 ,, ,, ,, 252,young. 



Flem. Brit. An. 



Selby, Brit. Ornith. vol. ii. p. 520. 

 Lestris Richardsonii, Richardson''s ,, Jenyns, Brit. Vert. p. 282. 

 ,, ,, ,, Lestris, Goulu, Birds of Europe, pt. iv. 



„ ,, Stercoraire i?ic/(a»-rfson, Temm, Man. d'Ornith. vol. iv. p. 499. 



Arctic Gull, 

 Black-toed ,, 

 Arctic ,, 



Black-toed ,, 

 Arctic ,, 



Black-toed ,, 



Cataractesparasiticus, Arctic Skua, 



