452 
PALLAS’ DIPPER. 
inhabit this continent A specimen from the northern coun- 
tries, communicated by Mr Leadbeater, first enabled us to in- 
troduce it into the American Fauna ; and, almost simultane- 
ously, Mr Swainson, in his Synopsis of the birds discovered 
in Mexico by Mr Bullock, announced it as occurring in that 
country, but in no other part, as he thought, of America. 
Judging from his short description, (and the species does not 
admit of a long one,) we have no hesitation in affirming, that 
both Mr Swainson’s, and that described by Temminck, and 
supposed to have been found by Pallas in the Crimea, are 
identical with ours ; notwithstanding the localities are so widely 
distant from each other, as well as from that whence ours comes, 
which, however, it will be perceived, is intermediate between 
them. 
It has been frequently remarked by us, (and the fact is now 
well established,) that many birds of Mexico, entirely unknown 
in the Atlantic territories of the United States, are met with 
in the interior, and especially along the range of the Rocky 
Mountains, at considerably higher latitudes. But it was not 
to be expected that a Mexican species should extend so far 
north as the Athabasca Lake, where our specimen was pro- 
cured. The circumstance is, however, the less surprising in 
birds of this genus, as their peculiar habits will only allow 
them to live in certain districts. The case is similar with the 
dipper of the old continent, which, though widely dispersed, 
is only seen in mountainous and rocky countries. Though we 
do not see any improbability in the American species inhabit- 
ing the eastern Asiatic shore, we prefer believing that the 
specimens on which Temminck established the species, and 
European Cinclus aquaticus, C. Pallasii, Temm.,C, Americanus, Swain., C. Asi- 
aiicus, ? from India, and the C, septentrionalis and melanogaster of Brehm, men- 
tioned by our author. 
Mr Gould has figured a bird, in his beautiful illustrations of Himalaya, under 
C. Pallasii, which is decidedly different from the American j but I do not see 
any proof why it should be called C. Pallasii. — Ed, 
