89 
Glyplie viridescens. 
“Length of body, .07-inch, or not quite two millimetres. General 
color, dark green verging to black. Head finely and densely punct¬ 
ured; palpi whitish; eyes black; antennae light brown, the basal 
joint received in a shallow, wide longitudinal depression. Thorax 
finely and densely punctured; legs yellowish white; tips of tarsi 
dusky; wings hyaline; subcostal nervure brown and prolonged on 
the costa to the extreme tip of wing. Abdomen black, glabrous, 
polished, flat above, convex beneath, so as in those individuals with 
acuminate anus—which I take to be females, but which Wilkinson 
takes to be males—to appear almost triangular when viewed in 
profile.” 
Hockeria perpulcra. Walsh. 
Length .09-inch, general color black Head covered with dense 
largish punctures, which in certain lights show a golden silvery ra¬ 
diance; deeply emarginate behind, at an angle of 90°, so that its 
longitudinal is scarcely one-fifth of its transverse diameter. Antennae, 
which are inserted immediately above the mouth, have their first 
joint equal to one-half the sum of their other joints, and are received 
in a narrow, deep longitudinal depression; eyes, black; thorax punc¬ 
tured like the head, above and beneath, with the mesothoracic scutel 
large, much rounded above, and obtusely pointed behind. Prothorax 
transverse before and behind, with the anterior angles a little 
rounded, and the posterior ones acute, slightly prolonged backwards; 
wings hyaline, subcostal nervure brownish, extending more than 
three-fourths of the way to the tip; ramus very short and widely- 
colored ; legs with the tips of the tibiae, and the tarsi, obscure whit¬ 
ish ; the posterior coxae over one-half the length of the posterior 
femora, which last are incrassated so that the transverse diameter 
equals one-third the longitudinal; both coxae and femora of the pos¬ 
terior legs have the appearance on them of short, dense, whitish 
hair. Posterior tibiae truncate at tip, with no vestige of spurs. 
Abdomen ovate, glabrous, first joint equal to three-fifths of its entire 
length, and highly polished; intermediate joints very narrow, with 
the appearance of short, whitish hairs; the last joint acutely pointed 
behind, and at its base, when viewed in profile, only one-half the 
diameter of penultimate joint, but set on a line with it above. 
The following species of Ichneumon flies are also found to be par¬ 
asitic on the Army-worm, and, like others, were first observed and 
described by Mr. Walsh, who made this group of insects a special 
study: 
I give his original descriptions: 
Mesocliorus vitreus. Walsh. 
“Length of the body .08 inch (two millimetres,) to .14 inch (three 
millimetres); the small specimens being parasitic on the Army-woim 
and the large one captured in Rock Island county. Male, general 
color light rufous. Eyes and ocelli black, antennae fuscous, except 
toward the base. Upper surface of thorax in the larger specimen 
fuscous; intermediate and posterior tibiae with spurs equal to one 
i 
