66 Psyche {June 
parently mature, have been examined. They are of the usual 
elongate-oval shape, not stalked, and whitish in color.” 
For seven years the 
writer has been looking for 
a chance to corroborate or 
disprove the theories ad- 
vanced in the above state-" 
ment, but the opportunity 
Fig. 1. Egg of Perilampus chrysope var., j f 
greatly enlarged. (Original.) did not present _ itself 
until about two weeks 
ago. During the previous summer specimens of 
Perilampus were occasionally bred from Chrysopa 
cocoons. Recently the writer was successful in 
capturing several adult female Perilampus' of 
this species hovering about oleanders infested with 
Aphis nerti and fed upon by Chrysopa. The 
insects were then watched and were observed 
frequently to touch the tip of the abdomen to the 
leaf. On placing the leaf under the binocular 
microscope the minute 
transparent eggs of the 
Perilampus were seen, 
one end of the egg being 
slightly attached to the 
leaf. This observation 
proved the correctness 
of the original theory 
and established beyond 
doubt the habit of leaf- 
oviposition among the 
parasitic Hymenoptera. 
Fig. 2. Planidia of Perilam- The eggs are numerous Fig. 3. Plan- 
pus chrysope var., attached 2 > idium of Peri- 
to edge of oleander leaf and one female depositing lampusattached 
awaiting the approach of Chry- fifty-two in a single to egg-stalk 
sopa larva. (Original, photo- . of Chrysopa. 
graphed from life.) day. They are pearly Original.) 
white in color, about 
twenty-five one-hundredths millimeter in length, and are charac- 
teristically sculptured. The egg is very faintly attached to the 
1 Determined by J. C. Crawford as Perilampus chrysope Crawford, new variety. 
