139 



uncommon as far south as Cape Cod ; beyond this point it is rarely 

 met with, probably from the absence of the bold rocky shores in 

 which it delights. 



Catarractes ringvia Briinnich. 

 Uria ringvia Bru?imch, Ornith. Borealis, p. 28, Naum. Nat, de Vog. 



Deutsch. 12, p. 360. 

 Uria ringvia Beinhcmit, Natur. Bidrag. p. 18; Keys, und Bias. 



Wirbelthiere Europas, p. 238. 

 Uria Alga BriinnicJi, Ornith. Borealis, p. 28. 

 Uria lachrymans Clwris. Voyages Pitt. aut. du Monde. 23 ; Yarrell, 



Brit. Birds, 3, p. 351 ; Temm. Man. voL 4, p. 574. 

 Uria troille Girard, Birds of Long Island, p. 376. 

 Uria leucopsis Brehin., Beit. See Yog. 3, p. 880. 

 Uria troille leucopthalmos Faber. Prod, de Is. Ornith. 42. 

 Columbus langvia Plaff. Reise. n. Isl. 562. 

 Figures Aud. Birds of Am. plate 218, fig. 1 ; id. 8vo. ed. plate 473, 



fig. 1 ; Gould's Birds of Europe, plate 397 ; Naumann Natur. 



der Vog. Deutsch. plate 332. 



Sp. Ch. Form similar to that of C. troille^ but with the body 

 rather more slender. 



Plumage. Distributions of colors the same, with the exception of 

 a narrow but distinct white line, which encircles the eye and runs 

 down the furrow in the feathers from the posterior canthus. The 

 brown of the fore-neck and throat is darker and less ferruginous. 

 This plumage, which is that of the adult of both sexes in spring, 

 varies in precisely the same manner as the summer plumage of C. 

 troille. I am not aware that any specimens in winter plumage, either 

 of the adult or of the young, have ever been procured in the United 

 States, and if they have, they have probably been confounded with 

 C troille. According to Naumann this plumage can be distinguished 

 from that of C. troille, which, in other particulars, it resembles, by the 

 white circle and line above mentioned. On comparing European 

 specimens in summer plumage, the same diiference is observed as in 

 comparing specimens of C. troille. My specimens were obtained at 

 the commencement of the breeding season, and are probably in very 

 fine plumage. All the European specimens, excepting one from Ice- 

 land, are from the Orkney Islands, and were all probably procured 

 very nearly at the same time. 



Habitat. Only a single locality on our coast is known at present 

 where these birds are found. Bird Bock in the Gulf of St. Lawrence, 

 where they breed in large numbers. As Audubon did not distinguish 

 this species from the preceding one, he says nothing in his descrip- 

 tion by which we can infer in what particular localities he found 

 them ; the probability is that at the time of his visit they were in the 



