35 
twig inserted in water, isolated from other leaves, and which had been 
carefully examined with lens to see that it was free from larvie, and 
protected by cheese-cloth cover. This individual took kindly to the 
situation, remained constantly on the leaf, and produced a number of 
larvee which developed as rapidly as those brought from the woods, 
agreeing perfectly with them in every particular that I could observe, 
and proving their ability to develop on Cornus. Unfortunately their 
propensity for traveling down the twigs resulted in their being drowned 
in the water in which the twig was kept. I think, however, that their 
developing perfectly on the Cornus leaf, and the perfect agreement of 
apterous males and females so developed with those occurring normally 
on Cornus in woods, is good evidence of identity. 
In the meantime lice had been found in some numbers on the roots of 
grasses not yet dead, especially on Panicum, and many of these had 
been placed in breeding-jars in hopes of securing additional winged 
specimens. While apparently thriving they failed to acquire wings, 
but on September 24 I observed in one of the jars an apterous individ- 
ual, and directly behind it an egg evidently fresh-laid, elongate, oval, 
greenish, polished, like eggs of cornt on Cornus. This was mounted 
with the apterous individual, and in the body of the latter another egg 
was apparent. The egg was laid at the surface of the earth in the jar, 
and similar eggs were found in pill-boxes in which root-lice were con- 
fiied. A close examination of roots, especially those of Panicum from 
the field, enabled me to find a number of small apterous individuals like 
the males on Cornus leaves, as well as the small apterous and oviparous 
females. These occurred with a larger form, exactly like those which 
had been observed to acquire wings, and the conclusion seemed inevi- 
table that these viviparous and apterous forms produced in the ground 
a brood of apterous males and females. These latter were observed 
attempting coition, though in no case did I see the act completed. The 
males are of an orange color, darker than the females, and differ from 
males on Cornus leaves in being shorter, and in lacking the purplish tint 
usually present in those. The females. agree well with females on 
Cornus leaves, but are shorter, have six-jointed antenne, and are 
slightly lighter colored, which would be expected in individuals living 
under-ground. September 28, eggs from these root-forms were more 
numerous, and by October 3 I found them quite plenty in my jars. 
One oviparous female was observed with three eggs extruded from the 
body, adhering by the ends, and the last one still partly within the 
body. They are whitish at first, but turn yellow on exposure, and later 
turn quite dark. 
The eggs seem to be deposited at hap-hazard on surface of earth, 
sides of boxes or jars, and each female appears to produce but two or 
three eggs. 
These observations, I am free to confess, appear to complicate the 
round of life of the species, and to make the complete circle from grass 
