STERCOHARIUS. 195 



and passes southwards on migration, sometimes straggling 

 even into the southern hemisphere. 



Stercorarius crepidatus. Eichardson's Skua. 



Larus crepidatus, Gmelin, i. p. 602 (1788). 

 Lestris parasitica, Naum. x. p. 506. 

 Lestris richardsonii, Macg. v. p. 493; Hewitson, p. 509 



Yarr. ed. 2, iii. p. 611; id. ed. 3, iii. p. 630. 

 Stercorarius parasiticus, Gray, p. 228; Gould, v. pi. 80. 

 Lestris parasiticus, Harting, p. 78. 

 Stercorarius crepidatus. Dresser, viii. p. 471. 

 Richardson's Skua, Yarr. ed. 1, iii. p. 489. 



Crepidatus = wearing sandals, crepidcs ; from its particoloured feet. 



Breeds in the Orkneys, Shetlands, Hebrides, and a few 

 spots on the northern mainland of Scotland, appearing on 

 the coasts of Great Britain and Ireland on the autumnal and 

 vernal migrations. It inhabits the Palsearctic and Nearctic 

 Regions, straggling occasionally as far south as the Cape and 

 New Zealand. 



Stercorarius parasiticus. Buffon's Skua. 



Larus parasiticus, Linnceus, S. N. i. p. 226 (1766). 



Lestris crepidata, Naum. x. p. 534. 



Lestris parasitica, Macg. v. p. 503. 



Stercorarius cepphus. Gray, p. 229. 



Lestris buffonii, Yarr. ed. 2, iii. p. 616; id. ed. 3, iii. p. 635; 



Hewitson, p. 508. 

 Stercorarius longicaudus, Gould, v. pi. 81. 

 Lestris longicaudus, Harting, p. 78. 

 Stercorarius parasiticus. Dresser, viii. p. 481. 

 Buffon's Skua, Yarr. ed. 1, iii. p. 494. 



ParoAtlciis — vapaaiTiKos, parasitic, from Trapdairos = one who eats unin- 

 TJted at the table of another ; from Trapd = beside, and alros = wheat, food. 



An occasional visitant on migration, generally in immature 



plumage. It inhabits the circumpolar districts of both the 



Old and New worlds, whence it spreads southwards in 



winter. 



o2 



