514 NOTES ON SOME OF THE 
mens of both, in the Museum of the Boston Society of 
Natural History and elsewhere, has led me to believe is 
actually the fact. Sabine, so long ago as 1819, I think has 
fully shown this in his remarks on Falco Islandicus in his 
Memoir on the Birds of Greenland.* According to the 
late lamented Mr. Cassin, sacer is the specific name which 
has priority for this species. + 
uck Hawk. Falco peregrinus Linn. (Falco anatum 
Bon., and F. nigriceps Cass). I stated in my Catalogue,’ 
published five years since, that the eggs and the young of 
this species had been taken at different times from Mount 
Tom, and that the young had also been obtained from Tal- 
cott Mountain in Connecticut. A few months later I had the 
pleasure of giving a full account of the eyrie on Mount Tom, 
with a detailed description of the eggs, and some general 
remarks on the distribution of this interesting species in the 
breeding season.f These eggs were the first eggs of the 
Duck Hawk known to naturalists to have been obtained in 
the United States, the previous most southern locality whence 
they had been taken being Labrador; but the species had 
previously been observed in the breeding season by Dr. S. 
. Haldeman as far south as Harper's Ferry, Virginia. One 
or more pairs of these birds have been seen about Mounts 
Tom and Holyoke every season since the first discovery of 
the eggs at the former locality in 1864. Mr. C. W. Bennett, 
of Holyoke, their discoverer, has since carefully watched 
them, and his frequent laborious searches for their nest have 
been well rewarded. In 1866 he took a second set of eggs: 
three in number, from the eyrie previously occupied. In 
1867 the male bird was killed late in April, and this appar- 
ently prevented their breeding there that year, as they prob- 
_ ably otherwise would have done. At least no nest was that 






*Transact. London Linn. Soc., Vol. xx, p. 528. 
, tSee Dr. Coues’ List of the Birds of New England, Proceedings of the Essex Insti- 
ae tute, Vol. v, p. 254. 
aan 1See Proceedings Essex Institute, Vol. iv, p. 153. 

