Vol. XX 

 1905 



II_ | Eifrig, Canadian Expedition to Hudson Bay. ^35 



3. Cepphus mandtii. Mandt's Guillemot. — Eight skins, 6 in adult 

 summer plumage, 2 immature, taken June 16, July 16 and 17, 1904, at Cape 

 Fullerton, where thev are common summer and winter, as also throughout 

 Hudson Bay and northward ; some were seen at North Devon. Although 

 feeding on crustaceans and small fishes they are used as food by both 

 Eskimos and white people. They nest in cavities under rocks and boul- 

 ders, one, two, or very seldom three eggs being the full set. They nest 

 late, none of the 12 eggs collected being taken before July 10. The 

 ground color of the eggs is greenish white to chalky white, with large 

 and small spots and blotches of black, umber and lilac, most numerous 

 and largest at the larger end. 



4. Uria lomvia. Brunnich's Murre. — Three skins from Cape Wols- 

 tenholme, Hudson Strait, where there is a large rookery. Male and two 

 females, Jul v 21, 1904. They were sitting on the ice cakes of a large ice jam. 

 All through Hudson Strait they were numerous, often flying about the 

 ship. They are common at North Devon and other arctic islands, also on 

 the coast of Greenland. 



5. Alle alle. Dovekie. — This species was observed to be common 

 from Frobisher Bay northward, where it nests in the cliffs on the coast of 

 Baffin Land, Hall Island, and North Greenland. Two eggs were collected 

 on the Cary Islands near Cape Parry, North Greenland. It deposits its 

 single egg, like the Guillemots, in crevices. The eggs are very pale 

 green, one unmarked, the other sprinkled with minute brown dots. 



6. Stercorarius parasiticus. Parasitic Jaeger. — Two skins were 

 brought from Cape Fullerton, where the birds were not uncommon. The 

 Arctic Tern (Sterna para disced) suffers most from its depredations. Two 

 eggs were collected in Southampton Island ; the ground color is dull 

 olive-grayish with dark and pale umber-vinaceous spots and blotches, 

 also some lines. Size, 2.40 X 1.90. The stomach contents of this and 

 the next species were bones and feathers, which seems to indicate that 

 they may occasionally act as true birds of prey. This species was more 

 common than the next. 



7. Stercorarius longicaudus. Long-tailed Jaeger. — Three speci- 

 mens, in the light phase of plumage, were collected at Fullerton (date ?). 

 To this species probably belong two Jaeger eggs obtained at CapeChidley 

 on the outward trip, September, 1903, from Eskimos. They are of the 

 same color and appearance as the preceding, but the markings are more 

 obscure, and they are smaller, measuring 1.S0 X 1.30 and 1.70 X 1.45. 



8. Pagophila alba. Ivory Gull. — A beautiful young bird was taken 

 at Fullerton, Sept. 22, 1904. The primaries are all tipped with black and 

 there are many partly hidden black spots on the greater and lesser wing- 

 coverts, and above the under edge of the wing, which form a pleasing con- 

 trast to the otherwise immaculate white, soft plumage. The gizzard 

 contained oily and hairy substances, also what was apparently an onion, 

 gotten no doubt from refuse thrown from some whaler, which they like 

 to follow up. 



