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Annals Entomological Society of America  [Vol. XIV, 
the case of overwintering generations, which remain in the 
cocoon as prepupz, this molt does not occur for a period of 
four to eight months after spinning. The pupa emerges from 
the cocoon in a minimum of 10 days after pupation. The 
pupal molt is at once shed and a full-fledged adult appears 
which may oviposit after a period of three to six days. 
THe EGes: 
The eggs of our Chrysopide, as is well known, are stalked, 
the stalks ranging from about four to eight millimeters in length 
in the different species. The stalk is composed of a gelatinous 
substance exuded at oviposition, which hardens quickly after 
being drawn out into the usual form. The eggs are elongate, 
ellipsoidal, and light green to distinctly greenish yellow in 
color. Chrysopa nigricornis Burm. has the longest stalks of 
any eggs seen, and C. quadripunctata the shortest. The stalks 
apparently vary directly as the length of the abdomens in the 
different species. The eggs of C. nigricornis are deposited on 
the leaves of the trees, maples by preference, and are nearly 
always in rather closely arranged groups, with the stalks some- 
what tangled or entwined. Single eggs of this species are not 
uncommon, however. The other species deposit their eggs in 
less closely arranged and often regular groups, in rows or 
singly. The place of oviposition, the size of the egg, the length 
of stalk, and the coloration serve in practically all cases to 
identify the eggs of the different species. 
Many abnormalities occur in oviposition which have not 
been described. Some of our most common species which 
normally deposit stalked eggs, may, under certain conditions, 
deposit stalkless eggs, eggless stalks, stalked eggs attached to 
other eggs or to their stalks. Three eggs of C. chi were found 
with their stalks united into one at about midway. In the 
case of our common species, these can be explained as accidents 
occurring during oviposition. 
Oviposition has been correctly described, at least in the 
main, by several writers. No differences of importance have 
been observed in the different species. No difficulty was 
experienced in obtaining large numbers of eggs when the adults 
of our most common species were confined in vials and fed daily 
on plant lice. Most of this work has been carried on with 
