INSECTS. 
539 
wings reticulated ; antennae at least twenty-jointed, simple, se¬ 
taceous or filiform, and long ; nine of the joints are unequal, the 
second dilated, the last three slender and elongated ; the labial 
short, four-jointed, the last one ovate. 
Ichneumon manifestator — The Notorious Ichneumon. 
Plate C. fig. 12. 
Body black ; wings gray ; legs dusky. Inhabits Europe. 
Section II. —Aculeata. 
With a pediculated abdomen in the females, and those called 
neuters, inclosing a sharp sting of three pieces, provided with 
glands filled with an acrid fluid ; antenme of the male with thir¬ 
teen joints, and that of the female with twelve. 
TRIBE III.-HETEROGYNA. 
The females and neuters of those which live in society with¬ 
out wings, having geniculate antennae; a small rounded and 
vaulted labium. 
Genus FORMICA.— LatreiUe. 
Generic Character. — Without a sting; antennae placed near 
the middle of the anterior portion of the head ; with strong tri¬ 
angular dentated mandibles; peduncle of the abdomen having 
one ring, formed like a compressed vertical scale. 
Formica Herculanea. — The Herculean Formica. 
Plate C. fig. 9. 
The antennae of the neuters are black; the head large, black, 
and shining, slightly covered with hairs ; thorax blood-red. In¬ 
habits Europe in dead trees. 
TRIBE IV.-FOSSORES. 
The individuals are of two kinds, male and female, having 
extended wings. 
Genus AMMOPHILA.— Kirby. 
Generic Character —Mandibles interiorly indented ; antennae 
placed near the middle of the head; jaws and lip forming a spu- 
