NATURAL SCIENCES OF PHILADELPHIA. 191 
Mr. Cassin called atteDtion to the specimens of Hesperiphona 
vespertina presented by Mr. J. D. Sergeant, which were procured in 
northern Illinois, and stated that since the description of the species by 
Mr. Wm. Cooper, it has not been collected east of the Mississippi, and 
is but rarely found east of the Rocky Mountains. 
A'ov. mil. 
Vice-President Bridges in the Chair. 
Thirty-four members present. 
On Pteport of the respective Committees the following papers were 
ordered to be printed in the Journal : 
Description of the Embryonic forms of thirty-eight species of Uni- 
onida3, by Isaac Lea, LL.D. 
New Unionidae of the United States, by Isaac Lea, LL.D., 
And the following in the Proceedings : 
Catalogue of Birds collected by A. A. Henderson, M. D., TJ. S. Navy, at Hakodadi, 
Island of Jesso, Japan, with notes and descriptions of new species, 
BY JOHN CASSIN. 
During a cruise of the U. S. ship Portsmouth, Captain A. H. Foote, U. S. 
Navy, commanding, recently completed, a very interesting collection of birds 
and collections in other departments of Natural History were made by Dr. A. 
A. Henderson, Surgeon, U. S. Navy, and Member of this Academy. Mainly the 
birds were obtained at Hakodadi, in the Island of Jesso, the most northern ot 
the Empire of Japan, and in the Island of Luzon, Philippine Islands, and the 
collection contains so many species, little known and otherwise of high interest, 
that we have deemed it proper to prepare catalogues for publication. The pre- 
sent paper contains birds from Hakodadi, exclusively, but we propose shortly 
to give a catalogue of those from the Philippines, to include also another col- 
lection recently received from the same Islands. 
Though the fullest encouragement and every facility was cheerfully granted 
by Captain Foote, opportunities for collecting birds only presented, favorable 
in any considerable degree, at the two points mentioned. The U. S. ship 
Portsmouth, it will be remembered, was in the Chinese Seas during the recent 
troubles, and it was undoubtedly most fortunate for the interests of the United 
States that such an accomplished and efficient officer as Captain Foote was in 
command and so faithfully maintained and defended the dignity of his flag and 
the reputation of his country. 
The present collection was made at Hakodadi in October, 1857. 
1. MiLVUs MELANOTis, Temm. and Schleg. 
Milvus melanotis, Temm. and Schleg., Faun. Jap. Aves, p. 14, (1850.) 
Falco cheela, Lath. Ind. Orn. i. p. 14, (1790) ? 
Milvus govinda, Sykes, Proc. Zool. Soc. London, 1832, p. 81? 
Temm. and Schleg., Faun. Jap. Aves, pi. 5, 6. Gould, B. of Asia, pt, 4, 
pi. 1? 
Apparently a young male of this species, very much resembling the figures 
in Faun. Jap. cited above, (pi. 5,) but with the wing coverts and shorter quills 
tipped and edged with dull white. The entire under parts are also striped lon- 
gitudinally and in the middle of the feathers with a dull yellowish white. 
This bird is scarcely to be distinguished from the species usually known as 
Milvus govinda^ of which a beautiful and very accurate figure is given by Mr. 
1858.] 
