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ANOTHER SPIDER-EGG PARASITE. 
By L. O. Howarp. 
On p. 269 of vol. u, INSEcT LIFE, I erected the new Proctotrypid 
genus Acoloides for a species which was named saitidis from specimens 
reared from the eggs of Saitis puler, a not uncommon spider, by Mr. 
Lawrence Bruner, of Lincoln, Nebr. I find another distinct species in 
this interesting genus among some spider parasites sent me by Mr. J. 
H. Emerton, and submit the following characterization. Mr. Ashmead, 
in monographing the Proctotrypide, has found several other species 
which fit into this genus and which he will describe in his fortheoming 
work. None of these, however, have been reared, but it is quite 
likely that they will also prove to be parasites upon spider-eggs. 
ACOLOIDES EMERTONH, n. sp., Female.—Length, 1.4 mm.; expanse, 1.5 mm.; 
black, shining, but closely microscopically punctulate; antenne brown-black, the 
scape pale at extreme base; legs, including coxez, brownish-yelow; abdomen mostly 
yellow, the second segment, lateral and apical margin of third and the following seg- 
ments fuscous or black. Head very wide, more than three times as wide as thick 
antero-posteriorly; eyes large, rounded, whitish (atter death) and pubescent; man- 
dibles pale rufous, the tips black. Antennal club large, fusiform, as long as the 
pedicel, and funicle united; first funicle joint less than half the length of the pedicel, 
the other funicle joints transverse. Thorax convex, with two punctate lines in front 
of the scutellum, the latter semicircular, convex; metanotum very short, striated, 
bounded by a carina posteriorly, the angles produced into a minute tooth. Wings 
subhyaline, pubescent, extending beyond tip of abdomen; the venation dark brown; 
the marginal vein short, stout, very littie longer than thick; the stigmal long, 
slender, ending ina small knob. Abdomen oblong oval, one-third longer than the 
head and thorax together, microscopically sculptured but lustrous, the first and 
second segments about equal in length, striated. 
Described from 7 2 specimens, reared by Mr. J. H. Emerton from the 
egg cocoon of an unknown spider. 
EXTRACTS FROM CORRESPONDENCE. 
Another iLead-boring Insect. 
= * * J inclosea drawing of a piece 
of lead pipe which I have that was cut 
by the larva of Monohammus confusor, or 
from the description I think it was that 
insect. You will note that the borer 
ate through the wood and upon coming 
to the lead did not stop. The lead is 
2imm. thick. A leak in the pipe led to 
investigation, when the hole was found, 
and the grub was also discovered. It 
was a new house, only recently built. 
The piece of wood and pipe both shown 
in drawing.—[A. J. Cook, Michigan, 
November 4, 1891. Fic. 23.—Lead pipe bored by an insect larva. 
