106 Coues on the Eave , Cliff \ or Crescent Swallow . 
April, and had that year finished about fifty nests by the 20th of 
the same month. The next year, namely, 1820, Major Long and 
Sir John Franklin found these birds again, in widely remote re- 
gions, — the first named during his expedition to the Bocky Moun- 
tains, and the latter on the journey from Cumberland House to 
Fort Enterprise, and on the banks of Point Lake, in latitude 65°, 
where its earliest arrival was^ noted the following year on the 12th 
of June. Dr. Hichardson says that their clustered nests are of 
frequent occurrence on the faces of cliffs of the Barren Grounds, and 
not uncommon throughout the course of the Slave and Mackenzie’s 
Eivers ; and that their first appearance at Fort Chipewyan was on 
the 25th of June, 1825. Major Long’s discovery was named 
Hirundo lunifrons by Say in 1823 ; and the following year Audu- 
bon published his hitherto MS. name respublicana in the Annals of 
the New York Lyceum of Natural History, with some remarks on 
the species, in connection with some observations of Governor De 
Witt Clinton, who called the bird Hirundo opifex. Meanwhile, 
Vieillot had described the West Indian conspecies as Hirundo 
fulva ; and the future Prince Bonaparte adopted this name for our 
species in 1825. Thus in the short space of two years, 1823 - 25, 
the interesting Anonyma, “ No. 35,” before known only by num- 
ber, like the striped inmates of some of our penal establishments, 
suddenly became quite a lion, with titles galore in the binomial 
haut ton. But it was not till 1850 that it was actually raised to 
the sublime degree of Petrochelidon, though it had' long been taken 
and held to be a master-mason. 
The Cliff Swallow has been supposed by some to be an immigrant 
of comparatively recent date in the Eastern United States ; but it 
does not appear that any broad theory of a general progressive 
eastward extension is fairly deducible from the evidence we possess. 
On the contrary, much of the testimony is merely indicative of the 
dates, when, in various parts of the country, the birds began to 
build under eaves, and so established colonies where none existed 
before ; and some of the evidence opposes the view just mentioned. 
The Swallows, as a rule, are birds of local distribution in the breed- 
ing season, notwithstanding their pre-eminent migratory abilities ; 
they tend to settle in particular places, and return year after year ; 
and nothing is better known than that one town may be full of 
Swallow T s of several kinds unknown in another town hard by. I 
suppose the real meaning of the record is “ only this and nothing 
