NATURAL HISTORY. xxxiii 



above twenty measured by me, the smallest exceeded 8 inches in length, and the 

 average of that number was rather more than 8^ inches ; he states the extreme length 

 of his specimen to be only 7 inches. The females are larger than the males. Twelve 

 of them together weighed 21 ounces, or I? omices each. 



20.— STERNA ARCTICA {Arctic Tern). 



STERNA ARCTICA.— RicA .• Faun. Bnr. ^mer.— vol. ii., p. 414. Temm.— vol. ii,, p. 742. 



Sabine, Franklin's Journey — p. 694. Sab : Supp. to Parry's 1st Voy. — p. ccii. 

 Rich: App. to Parry's 2d Voyage — p. 356. 



Ross, App. to Parry's 3d Voyage — p. 103; and App. to Parry's Polar 

 Voyage — p. 194. 



Very scarce, both to the east and west of the Peninsula of Boothia, only five or six 

 having been seen by us during the three years we were in that neighbourhood. 



It has lately been found abundantly on the west coast of Ireland, in the winter 

 season. 



21.— LARUS GLAUCUS {Glaucous Gull). 



LARUS GLAUCUS.— RicA .- Faun. Bor. Amer.— vol. ii., p. 417. 



Cuv : Reg. Anim. — vol. i., p. 556. Temm. — vol. ii., p. 757. 

 Sab : Trans. Linn. Soc. — vol. xii., p. 543. 

 Sab r App. to Parry's \st Voyage — p. cciii. 

 Ross, .ipp. to Parry's 3d Voyage — p. 103. 

 GLAUCOUS GVLL.—Arct. Zool.—\o\. ii., p. 532. Lath: Syn.— vol. vi., p. 374. 



Numbers of this magnificent species of Gull built their nests on the upper part of 

 the face of a high precipice, two or three miles to the south of Felix Harbour ; and the 

 whole line of precipitous rock that forms the western shore of Prince Regent's Inlet, 

 is annually resorted to by them in the breeding season. Although feeding chiefly on 



