196 INSECTA. 
perfectly unique in this order: the anal feet are wanting, while ali 
those of the three preceding sections have sixteen. 
The type of the first section, that of the Herrarires, is the genus 
Hepialus (Hepiolus of some authors) of Fabricius, and the Cossus of 
the same. The caterpillars are rare, and remain concealed in the 
heart of the plants on which they feeds their cocoon is mostly formed 
of particles cf the matter that nourishes them. The margin of the 
abdominal annuli of the chrysalis is dentated or spinous. ‘The an- 
tennz of the perfect Insect are always short, and most frequently pre- 
sent but one sort of small, short, rounded and crowded teeth. Those 
of the four others are always terminated by a simple thread; but they 
are furnished inferiorly in the males with a double line of setz. 
The proboscis is always very short, and but slightiy apparent. The 
wings are tectiform and usually elongated. The last abdominal an- 
nuli of the females form an elongated oviduct or sort of tail. The 
caterpillars of these Insects are very injurious to several kinds of 
trees and other useful vegetable productions. 
Sometimes the antennz, almost similarly formed in both sexes, 
have but very short teeth, arranged in one or two lines. 
Hepratus, Fab. 
‘ 
Distinguished by their almost granular antennz, which are much 
shorter than the thorax. The inferior wings are usually destitute of 
a bridle. 
The caterpillars live in the ground and feed on the roots of plants. 
HI. humuli, Fab.; Harr., Exp., of Eng. Ins., IV, a—d. The 
superior wings of the ill are silver-white and immaculate; 
those of the female yellow with red spots. 
The caterpillar devours the root of the Hop, and is extremely 
noxious in those districts where that plant is extensively culti- 
vated(1). 
Cossus, Fab. 
Where the antenne, at least as long as the thorax, present on their 
inner side a range of small, lamellated teeth, short, and rounded at 
the end. 
The caterpillars live in the interior of trees, on which they feed; 
=e 
(1) For the other species, see Fabricius, Esper, Engramelle, Hitibner, Godart, 
Donoyan, &e, 
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