54 INSECTA. 
Insects are winged, their body is most commonly square, their thorax 
trapezoidal or semicircular, and concealing or receiving the head. 
The antennze, usually inserted under a marginal projection of the 
sides of the head, are short, more or less perfoliate or granose, en- 
large insensibly, or terminate in aclub. The legs are only adapted 
for walking, and all the joints of the tarsi are entire, and terminated 
by single hooks; the anterior tibiz are frequently broad and triangu- 
lar. Several males have the head furnished with horns. Most of 
them inhabit the fungi on trees, or under the bark; some live on the 
ground, under stones. 
M. Leon Dufour has observed in certain subgenera of this family, 
such as Hypophlzeus, Diaperis proper, Eledona or Boletophagus, an 
excrementitious apparatus, and in the second salivary vessels. The 
chylific ventricle of these Heteromera is bristled with little piliform 
papilla. These characters, and the conformation of the organs of 
generation, point out the connexion between this and the preceding — 
family *. 
In some, the head is completely exposed, and never entirely re- 
ceived into a deep notch in the anterior of the thorax. This last 
is sometimes trapezoidal or square, and at others almost cylindrical ; 
its sides, as well as those of the elytra, do not extend remarkably 
beyond the body. 
This division will form the tribe of the DiaperRiaes, the type of 
which is the genus 
Draperis. 
Sometimes the antenne are generally stout, almost straight, and 
mostly perfoliate, or terminated abruptly bya thick club, The body 
is smooth, or the elytra are lightly striated. The sides of the tho- 
rax have but a slight border, and are neither depressed nor dentated ; 
there is no remarkable separation nor hiatus between its posterior 
angles and the base of the elytra. The two anterior legs are trian- 
gular, and dilated exteriorly at the extremity, in a great number. 
Here the antenne enlarge insensibly, or at least are not abruptly 
terminated by an oval or ovoid club, of which most of the joints are 
larger than the preceding ones. 
In some, and the greater number, the body is oval or ovoid, some- 
times even hemispherical, with the thorax either nearly square or 
trapezoidal, most frequently transversal, but never long and narrow. 
PuaeriA, Lat—Unoma, Puaueria, De). 
The last joint of the maxillary palpi larger and securiform, or like 
* Tt is the same with the following one. The transition from Tenebrio to Phale- 
ria and Helops, is almost insensible, and consequently the charaeters of these fami- 
lies, in some cases, are ambiguous. 
