OF WASHINGTON. 11 
Washington must be struck with the great number of species 
occurring within that limited area. Mr. Schwarz finally urged 
that it should be one of the duties of this Society to collect and 
compile materials for an insect fauna of the District, a work that 
would be facilitated by the large collections that have already been 
made in the District, and a part of which has already been put on 
record in the literature. 
JUNE 5, 1884. 
Twelve persons present. Vice-President Marx in the chair. 
Mr. Stewart exhibited a number (32) of parasites which he 
found dead within a pupa of Anthercea cy tit hi a. Mr. Howard 
identified the parasite as Smicra mar ice. 
Mr. Stewart further remarked on a trilobed gall he observed on 
o 
Elm leaves, and Mr. Pergande thinks it referable to the Cocks- 
comb Elm-leaf Gall produced by Colopha ulmtcola. 
Mr. Stewart also mentions the issuance of an undetermined 
parasitic larva from the imago of a Dragon-Fly (Odonata). 
Mr. Schwarz exhibited specimens of a beautiful and undescribed 
species of Or chest es* and of Apion walshii which he found 
infesting Betula nigra in the vicinity of Washington. The 
larva of the former species has not yet been found, but larvae of 
the Apion were exhibited infesting the catkins of the birch. 
Mr. Pergande exhibited a collection of European Hymenoptera 
representing types of genera and which he had just received from 
Dr. Schmiedeknecht, of Germany. 
Mr. Howard exhibited specimens of Inostemma boscii ( ?) 
and gave a short history of the theories concerning the curious 
thoracic appendage, arriving at the conclusion that it is a second- 
ary sexual character. 
Mr. Howard also exhibited specimens of a new species of 
Schizaspidia, collected in Florida by Mr. Schwarz, and which 
were also furnished with remarkable thoracic prolongations. 
Mr. Schwarz exhibited specimens of Eleusis pallida (family 
Staphylinidae) and Ino immunda (family Cucujidce) , remarking 
Since described by Dr. Horn as O. betuleti. 
