262 NORTH AMERICAN FAUNA. [no. 27. 



speaks of many nests being discovered on the Barren Grounds be- 

 tween Fort Anderson and Franklin Bay, and of specimens being ob- 

 tained from the Eskimo of the lower Anderson/' A specimen from 

 Big Island, Great Slave Lake, is still in the National Museum. 



Stercorarius longicaudus Vieill. Long-tailed Jaeger. 



This is apparently the least abundant of the jaegers in this region. 

 It has been observed at various points in the interior in migration, 

 but seems to breed only in the far north. 



While descending the Mackenzie in 1904 I saw one near Sans Sault 

 Rapid on June 19. It was flying northward over the tops of the 

 trees which fringed the valley. Probably referring to the present 

 species, Sabine records, under the name Lestris parasiticus, a jaeger 

 which was abundant, though less so than the pomarine, in the islands 

 of the Polar Sea. On Melville Island it was frequently met with, 

 seeking its food along the water courses. 6 Ross collected S. longicau- 

 dus at Fort Simpson/ Baird, Brewer, and Ridgway state that Mac- 

 Farlane found it abundant at Fort Anderson and on Franklin Bay, 

 and record a specimen taken at Peel River.* 2 I have recently exam- 

 ined a specimen obtained at Fort Rae by Frank Russell, and recorded 

 by him. e A specimen collected for MacP^arlane by the Eskimo on 

 Anderson River in July, 18G5 (the label bearing the inscription 

 " 2 eggs , '), is still in the National Museum. A mounted specimen in 

 the Fort Simpson museum was taken some years ago at Fort Provi- 

 dence. Seale states that this species was abundant along the Arctic 

 coast from Icy Cape to Herschel Island, July to September, 189G/ 

 Reed records two eggs from Baillie Island [Arctic Sea], taken July 

 12, 1901, by H. H. Bodfish.? 



Pagophila alba (Gunn.). Ivory Gull. 



Parry recorded the ivory gull from Winter Harbor, Melville 

 Island, where the first were observed May 24, 1820/' J. C. Ross re- 

 cords it as breeding commonly at Port Bo wen, but as rare west of 

 Prince Regent Inlet.' Harting records a specimen taken at Assist- 

 ance Harbor in 1851 ; f and McCormick noted the species in Welling- 



«Proc. U. S. Nat. Mus., XIV, p. 417, 1891. 



6 Suppl. to Appendix Parry's First Voyage, p. ccvi, lsi'4. 



c Nat. Hist. Rev.. II (second ser.), p. 289, 1862. 



* Water Birds N. A., II, pp. 342, 343, 1884. 

 c Expl. in Far North, p. 255, 1898. 



f Proc. Acad. Nat. Sci. Phila., 1S98, p. 131. 



0N. A. Birds' Eggs, p. 24, 1904. 



h Journal First Voyage, p. 178, 1S21. 



* Appendix to Ross's Second Voyage, p. xxxv, 1835. 

 J Proc. Zool. Soc. London, 1S71, p. 122. 



