83 * 
found on the roadside about a mile from town some post-oak sprouts 
on which Phyllovera abounded in all stages of development. The pale 
smooth variety was most numerous on the older and tougher leaves, 
while the darker, tubercled larvie and pseudo-pupe and a few winged 
specimens crowded the unfolding second growth. The young leaves 
were much curled and distorted by their innumerable punctures. The 
aphids were preyed upon by the larve of the green Chrysopa and of 
one or two small Coccinellids; the deep red larve of asmall Thrips was 
especially active and numerous among them, as also was the whitish 
gray larva of a small bug (No. 3 of my consignment of October 2). 
Put up specimens on slides and sent some alive to Mr. Howard in 
tubes ; also some in alcohol. I also placed winged individuals in three 
different sizes of tubes and on clean leaves in water in a glass jar. 
August 3.—Notwithstanding all my care all the winged lice perished 
without leaving any eggs, to my great disappointment. Probably the 
extreme heat of the weather was unfavorable. Cleaned and disinfected 
my tubes and put in fresh winged forms and closed the tubes with loose 
cotton instead of cork to prevent excess of moisture. 
August 3.—Another failure. All the specimens dead and molded 
and no eggs. I can not understand it. 
August 15.—Made another excursion out into the country and suc- 
ceeded in obtaining a very few. Nearly all the young oaks so badly 
infested two weeks ago are entirely cleared, probably by the migration 
of the winged forms and the destruction of eggs and wingless forms by 
predatory insects. The tender shoots are also killed and stand up stiff 
and dry; the drought being severe, there was no opportunity for them 
to recover from the attacks of the aphis. 
On the lower mature leaves the insect still abounds in its wingless 
forms, mostly the flat, pale, smooth variety. Put seven of the winged 
aphis into a very small tube with a bit of mature oak-leaf and closed it 
tightly with common cork. (The rubber corks kill all insects inclosed 
with them very shortly, probably with their sulphurous emanations.) 
Also put about a half dozen on growing sprouts of oak, out of doors, 
but which seemed to be entirely free from infection, inclosed under fine 
muslin cover. 
August 17.—Have at last succeeded in getting nine eggs in the small 
tube. These eggs do not differ much from those of the ordinary apter- 
ous form. On close comparison they seem rather more opaque and of 
a deeper yellow tint than the latter, but even in these particulars. there 
is some variation. Each individual produces from one to three eggs; 
and usually perishes beside them. 
August 21.—Kggs still healthy and beginning to show segmentation 
with two red eye-spots on the cephalic end. There is evidently a slip- 
ping backward of the thin pellicle that incloses them, although as yet 
no motion is discoverable. The eggs were all laid on the glass and not 
on the portion of the leaf inclosed with them. 
August 22.—Three Phyllovera have hatched from the eggs and one 
