25 
Beets with which it had been confined. June 29 the pnpa hatched. The 
parasitic adults therefore bad failed to deposit any eggs upon the larva, 
or, if so, the eggs Lad tailed to hatch. 
BGG PARASITES. 
On June 3 Trichogramma pretiosa Riley was found quite plentiful in 
some localities. Parasitized Helfothis eggs were placed in a vial for 
tin- purpose of rearing the imagos. On June 4 some had issued, and a 
female was observed in the act ol depositing her eggs. She first made 
a careful examination of each part of the egg. Selecting a certain 
point, she took a firm hold on the egg with her legs, elevated the head 
and thorax, bringing the entire weight of the body to bear on the end 
of the ovipositor. Then, by a series of drilling motions, the shell was 
punctured and the egg deposited. During the entire process the an- 
tennae were kept perfectly quiet and folded down upon and over the 
vertex. The act of deposition occurred three times in ten minutes. 
On July 6 plenty of Heliothis eggs were again found on the silks of 
trap corn, and many of them were parasitized. Concentrating the 
deposition of the Boll Worm eggs upon the trap corn greatly increases 
the opportunities of the parasites for depositing in them, and the ben- 
efit derived from it in this way is very great. 
A second parasite was reared from Boll Worm eggs. It is somewhat 
larger and much darker than Trichogramma pretiosa, but does not occur 
in nearly so great numbers. The specimen was referred to Dr. Biley 
for examination. He found it to be an unnamed species of the genus 
Telenomus. 
PARASITE^ OF THE LARVA. 
Euplectrm eomstockii and Chalets ovata, whose life-histories and pe- 
culiar habits have already been noted in the Fourth Report of the 
United States Entomological Commission, have been reared from theBoll 
Worm. The specimen from which Chalets "rat,/ was reared alsocontaiued 
many larvae of Phora aletia*. From these numerous specimens of lb to- 
plasta zigzag were reared. It seems strange, however, that only a sin- 
gle specimen of C. ovata and two or three of P. aletiw should be ob- 
tained from the worm. The explanation, if any. must be that //. zigzag 
parasitized the larvae of both.* 
Another beautiful parasite is a species of Limneria. which was mostly 
found in the early part of the season, one from a Boll Worm taken 
from corn and another from a tomato vine: the former in May. the latter 
in June. The parasitic larva issues from its host and spins a peculiarly 
marked white cocoon with brownish or reddish spots arranged in reg- 
ular order. 
* The supposition that the Bexaplasta could have parasitised the Chaleia larva is 
undoubtt'dlv unfounded. — C. V. K. 
