of the Chilfqf St, Lawrence, 263 



a way as to present a series of little niches, they seemed to alter- 

 nate, as if by design. The two species were evidently on terms of 

 perfect friendship, and when not sufficiently near to be distinguish- 

 ed by color or size, no diflference could be detected in their habits 

 or motions. The nests contained the same variety of eggs and 

 young as those of the preceding species ; if anything, the number 

 of newly laid eggs was proportionably less. The eggs, four in 

 number, were of a more regular oval, but otherwise similar in ap- 

 pearance, and the difference in size by no means proportioned to 

 that of the birds themselves. At the time of Audubon's visit 

 none of the present species were seen at Wapitaguan, and he says 

 that he never found them breeding on precipices, but always on 

 flat rocks. I was unable to visit the breeding-place mentioned by 

 him, near Cumberland Harbor, though I passed near, both going 

 and returning, and even remained two days at TSte de Baleine, in 

 hopes that the sea might go down sufficiently to make it possible 

 to land on the rock. 



Four eggs gave the following measurements: 62^ x 36^ mill. — 

 57 X 40^—56 X 38—59 x 39. 



Thallassidroma Leachiiy Bon. These birds were frequently seen 

 but do not breed in numbers or in many places on the North shore. 

 I found them but at two places, on Gull Island, at Romaine, and on 

 a small island between Mecattina and Bras D'Or. As the oppo- 

 site shore of Newfoundland is lower, and the islands less rocky, it 

 probably breeds there. On the Atlantic shore it is found breed- 

 ing everywhere that a suitable island exists, from Mount Desert 

 in Maine, to the Straits of Belle Isle. At Romaine the eggs were 

 but just laid on the 26th of June. 



Puffinus ? Shearwaters were very numerous in the Straits, 



and as at that time they must have been feeding their young, their 

 breeding-places were probably at no very great distance. Owing 

 to the stormy weather I was unable to procure a specimen so as to 

 identify the species, and did not succeed in finding their breeding'- 

 place. None of the inhabitants, questioned by me, had ever found 

 the egg or knew anything about their breeding-place. 



Lestris arcticus. Also very abundant in the Straits, but not found' 

 breeding. 



Larus marinus, Linru This beautiful and powerful Gull we 

 found breeding on almost all the grassy islands North of Romaine 

 in greater abundance as we approached the Straits. I saw noth- 

 ing in its habits not already well known. I am sure,. however^ 



