182 
any other larva?, as I found to my cost in the case of jars containing 
several Chrysopa larva?. 
The larval life covered about two weeks in confinement, and with 
limited food supply; but from the rapidity of the growth when supplied 
with abundance of food I think under very favorable conditions the 
period would not much exceed one week. The adult larva attains a 
length of nearly three-eighths of an inch and is more robust than the 
newly-hatched larva. In general structure there is very little change, 
except that the hairy vestiture becomes less prominent. In color the 
adult larva is brownish purple, darker along the dorsal margin, and 
with the lateral projecting angles of segments yellowish white. The 
venter is greenish hyaline centrally including the basal joints of the 
legs. The femora and tibia and feet are resinous, inclined to brownish. 
The head is marked dorsally with two slightly divaricating black 
bands, and with a purplish band extending backward onto the first 
thoracic segment from the black eye spot. The foot consists of 2 small 
curved claws and a rather long, projecting finger, with disk to enable 
the larva to better adhere to the smooth foliage. The tip of the abdo- 
men has a retractile quadrituberculate process which is used as a sort 
of anal proleg in running or bracing itself. The larva, when full grown, 
spins up in the curl of a leaf or in any partial protection, constructing a 
delicate, slightly oval, but nearly spherical, silken cocoon, which is 
attached to the leaf by silken threads. This cocoon is very small in com- 
parison both with the larva which spins it and the adult which emerges 
from it, and is less than one-eighth of an inch in longest diameter. 
The adult emerges in from ten to fourteen days cutting off the upper 
end of the cocoon in a neat cap. The fly is pea-green in color witn, in 
life, bronzy eyes with greenish reflections. The characteristic mark- 
ings of the species are the black second joint of the antenna?, a black 
ring around the antennal sockets, a broad black line below the eye, 
4 black spots on top of the head and 3 similiar spots on either side 
of the first segment of the thorax. The transparent, gauzy, green- 
ish, iridescent wings are very broad and long and very finely 
netted or veined in a very neat pattern, the normal greenish yellow 
color of the veins being varied with dusky crossbars. The adult 
is a very helpless insect, does not feed at all, and remains con- 
cealed in low grass during the day, becoming more active in the 
evening and depositing its eggs, so far as observed, only at this time, 
though perhaps also during the night. Its sole reason for existing is 
to deposit eggs, and having accomplished this it dies. It is a very 
fragile insect and can not be handled without being crushed, but is 
withal rather active and difficult to catch. When taken it emits a most 
disgusting and disagreeable odor, which seems to be its chief means of 
protection from enemies. While the species Chrysopa oculata referred 
to above was the common one in the orchard in question, another 
species also occurred there, and perhaps also still others. The differ- 
