STERCORARIUS. 195 



and passes southwards on migration, sometimes straggling 

 even into the southern hemisphere. 



Stercorarius crepidatus. RICHAKDSON'S SKUA. 



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



Lestris parasitica, Naum. x. p. 506. 



Lestris richardsonii, Macg. v. p. 492; 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. 



CrepUdtus wearing sandals, crepld<s ; 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, lAnnaeus, 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. 



Parasiticus = rapaatTiKos, parasitic, from TrapatrZros = one who eats unin- 

 vited at the table of another ; from Trapd = beside, and (Tiros = 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 



