: 502 P. W. CLAASSEN 
Apantales cinctiformis Vier. 
Apantales cinctiformis Vier. was reared on larvae of Nonagria oblonga. 
A number of specimens emerged on August 8, 1916. 
Elachertinae sp. 
Five specimens of Elachertinae sp. were reared from a larva of Lymnaecia 
phragmitella. These emerged on June 15, 1916. 
Pimpla indagatriz Walsh 
On June 8, 1916, several specimens of Pzmpla indagatrix Walsh emerged 
from the heads of cat-tails which had been kept in a covered jar in the 
laboratory. 
Pimpla inquisitorielia D. T. 
Several specimens of Pimpla inquisitoriella D. T. were reared from 
pupae of Arsilonche albovenosa. 
DIPTERA !° 
The following flies were reared from cat-tail. 
Platychirus quadratus Say 
Platychirus quadratus Say was reared from the heads of cat-tail. The 
larvae were noticed in early spring in the overwintering cat-tail heads. 
Many adults emerged between May 21 and June 10. 
Macrosargus clavis Will. 
The larvae of Macrosargus clavis Will. live in the burrows made by the 
larvae of Arzama obliqua Walk. or of Nonagria oblonga Grote. They 
winter over in the larval stage, and the adults emerge in May and in 
early June. 
Chaetopsis aeneae Wied. 
The larvae of Chaetopsis aeneae Wied. also are found in the burrows 
of Arzama obliqua Walk. and of Nonagria oblonga Grote. Adults emerged 
on August 8. 
10 The first three species were determined by Dr. O. A. Johannsen, the last one by Dr. J. D. Tothill. 
