dilute hymenopterous parasite described by Miss Emily A. 
nder the name of Coccophagus lecanii* was not infrequent, 
is specimens emerged in our breeding cages early in Octo- 
vhich time also the adult Hyperaspis appeared abundantly, 
insignificant percentage of the brood was actually parasit- 
.vever,»and the number of these parasites occurring was far 
ose of the year 1880, at which time the last previous up- 
f this species culminated. There is consequently every 
ity that the maple bark louse will be certainly not less 
t next year than this, but probably far more so, and that 
following will be marked by their almost total disappearance. 
teresting observation of my first assistant, Mr. H. Garman, 
nserted from his notes dated July 24. 
st of the goldfinch, Chrysomitris tristis, was found to-day in 
'3 orange hedge, and on examination proved to be covered 
with the silken nests and bodies of the female of Pulvi- 
• mmerabilis. These had been collected some distance away, 
were no maple trees in the neighborhood. There were no 
3 on the leaves of the hedge at a distance from the nest, 
-he neighborhood of the latter the leaves were covered with 
>me still active. The fact illustrates a means of dispersal 
bark louse which does not seem to have been noted by 
Experiments. 
le purpose of testing precisely the value of various local 
ions to trees infested by the maple bark louse, I instituted 
of experiments with all the substances likely to be of 
c use, and the results are herewith given. 
Kerosene Emulsion . 
e 18th July, when the leaves of the trees were generally in- 
y the young, we began experiments with the kerosene emul- 
;mg a strong soap suds for the preparation of the emulsion, 
iting with water to give two and a half per cent, of kero- 
iment 1.—At three p. m., a single leaf bearing many young- 
dipped in this fluid for a moment, and two hours later a 
of the insects were taken from the leaf and examined with 
scope. All were evidently dead, and those on the leaf also 
can Naturalist, Vol. XII, p. 661. J. Duncan Putnam in his admirable article on 
l innmnerabilis published in Volume II of the Proceedings of the Davenport 
of Sciences remarks, in a foot note to page 332, concerning this species: I 
inch inclined to think that Platyqaster lecanii ; described by Fitch in his 5th 
Report, as infesting Lecanium guercitronis may prove to be really a Coccoph- 
y allied if not identical with this species. The description applies too well, to 
eve that the two species belong to different families. In this event Dr. I itch s 
,to the Proctotrupidae is of course wrong.” 
:>t able, however, to agree with Mr. Putnam in this matter, as the descriptionby 
hich he refers states that the antennae of his species are threadlike, with the 
ider, three times as long as thick, the last one not enlarged; whereas, in the 
; of Uoccophaaus lecanii bred by us from Pulvinaria, the antennae are somewhat 
e joints less than twice as long as thick, and the last one is decidedly enlarged. 
