52 
[May 
Entomologisclie Beitrdge. Von J. T. G. Ratzehurg. Pampli. 4to. 
Untersuchung des GescTilelits-Zustandes hei den Sogenannten N'eutris 
der Bienen und ilher die Vorwandtschaft derselhen mit den Konigin- 
nen. Von J. T. C. Ratzehurg. Pamphlet. 4to. 
Uher Entioickelung der fusslosen Hymenopteren-Larven., mit heson- 
derer Riieksicht auf die Gattung Formica. Von F. D. C. Ratzehurg. 
Pamphlet. 4to. 
Notes on the Locusta septentrionalis Americanse decern septima. By 
Nathaniel Potter.^ M. D. Pamphlet. 8yo. 
On Nycterihia.^ a Genus of Wingless Insects. By J. 0. Westicood. 
Pamphlet. 4to. 
General remarks upon the Coleoptera of Lake Superior. By John 
L. Leconte. Pamphlet. 8vo. 
WRITTEN COMMUNICATIONS. 
The following papers were presented for publication in the Pro¬ 
ceedings :— 
‘‘Additions to the Catalogue of United States Lepidoptera, No. 4, 
by Aug. R. Grrote.” 
“ Description of a new species of Masaris from the Rocky Mount¬ 
ains, by E. T. Cresson.’^ 
And were referred to Committees. 
Letters were read 
From the Secretary of the Smithsonian Institution at Washington, 
D. C., acknowledging the receipt of recent numbers of the Society’s 
Proceedings. 
From Mrs. Lucy W. Say, dated Newburgh, N. Y., April 20th, 1863, 
acknowledging her election as a Corresponding Member of the Society, 
and transmitting donations to the Library. 
The following communication was read from Baron Osten Sacken:— 
‘‘APPEAL TO ENTOMOLOGISTS. 
The first volume of the “Monographs on North American Diptera” by Her¬ 
man Loew, published by the Smithsonian Institution, is already in the hands 
of the friends of American Entomology. 
The second volume, containing the family of Dolichopodidce, will appear in 
the course of the summer. 
The families of Asilidce, Empidce, Tipulidce, Tabanidce. and Stratiomydoe. will 
))e taken up next. ^ 
