48 THE ZOOLOGIST. 



frozen in ravines and under declivities, where they had been 

 blown by the wind and dashed to the ground ; their nostrils and 

 eyes were covered with ice, their legs and wings were broken, 

 extravasation of blood was found beneath the skin, and the snow 

 all round was covered with ejected gastric fluid. In the month of 

 March the temperature remained at between - 10° and — 22°, and 

 the sea was at times completely frozen, and comparatively few or 

 no Petrels were to be seen. Of specimens shot after March 13th 

 the ovaries were already fairly devoloped, the eggs being 1*5 mm. 

 in diameter. In April, May and June Petrels were often met 

 with ; as early as June 17th I found eggs deposited without 

 any nest on the bare rock. This species lays a large 

 white egg, which it defends by discharging an oily secretion. 

 The majority of the birds do not abandon the nesting-site after 

 the eggs have been taken, and if pushed off crawl back under- 

 neath the arms and legs of the plunderer. Though I have seen 

 this bird in all situations, and can positively say that for fifteen 

 months I have had P. glacialis continually under my notice, 

 I have never seen one dive below the surface. The bird may 

 push its head underwater in order to rescue sinking prey, but it 

 never dives completely under the surface. An albino male shot 

 on June 21st had only a grey spot on and under the wing-coverts, 

 especially conspicuous on the right side ; no deviations in respect 

 to colour of iris, beak and foot. Among the skins procured is a 

 series of young in down ; the first young birds were taken on 

 July 20th. 



Stercorarius pomarinus, Tern., Pomatorine Skua. — Several 

 examples were seen inland in August, 1882. I shot a specimen 

 on Aug. 10th, but did not skin it. 



Stercorarius parasiticus, L., Eichardson's Skua. — The first 

 examples of this species appeared at Jan Mayen on June 2nd. 

 It is numerously represented and breeds on the island, but the 

 nest was not found. I noticed a specimen of the dark variety in 

 the month of June for a long time, but the bird being very 

 cautious I failed to capture it. 



Stercorarius cephus, Brunnich, Buffon's Skua. — A pair of this 

 species was noticed among the Sea-swallows on the South Lagoon 

 in July, 1883. The male was shot, and the female was not 

 seen again. 



Larus glaucus, Brunnich, Glaucous Gull. — During the passage 



