544 
INSECTA. 
Trogosita, Olivier. 
Trogosita proper, has the antennae shorter than the thorax, the mandibles shorter than the head, and the max- 
illae with a single lobe. 
Trogosita mauritanica, Linn,, a flat beetle, four lines long, of a pitchy black colour, found in nuts, bread, and in 
the bark of trees ; its larva, known in Provence under the name of the Cadelle, attacks grain. 
Prostomis, Latr. {Megagnatkus, Meg.), has the mandibles very long, and two lobes to the maxillae ; the body is 
long and narrow. Trogos mandibularis, [a continental species]. 
Passandra, Dalm., has the antennae nearly as long as the body, with the eleventh joint alone of the antennae en- 
larged, in form of a reversed triangle. [Exotic species, lately monographed by Mr. Newman.] 
THE THIRD FAMILY OF THE COLEOPTERA TETRAMERA,— 
The Platysoma, — 
Approaches the last in respect to its internal anatomy, entire tarsi, and habits ; but the antennfe are of 
equal thickness, or slendered at the tips ; the mandibles are always exposed ; the palpi short, body 
depressed, and thorax nearly square. These insects are found under the bark of trees, and may be 
united into the single genus 
Cucujus, Fabricius, — 
proper, has the antennae shorter than the body in many species, with the basal joint shorter than the 
head. [C. clavipes, depressus, &c. See my memior on these insects in Zoolog. Journal.^ 
Dendrophagus, Gyll., has the antennae longer, and cylindrical, with the basal joint longer than the head, 
Uleoiota, Latr. {Brontes, Fabr.), has similar antennae, but the third joint is as long as the following ; the mandi- 
bles, in the typical species, are furnished with a long horn-like appendage. 
THE FOURTH FAMILY OF THE COLEOPTERA TETRAMERA,— 
The Longicornes, — 
Has the three basal joints of the tarsi furnished beneath with short brushes ; the first and second [not 
the second and third, as described by Latreille], being heart-shaped, and the third [not the fourth] 
deeply bilobed, with a small nodule, representing a joint, at the base of the terminal joint ; the labium^ 
placed upon a short transverse mentum, is generally membranous, heart-shaped, or bifid ; or horny, and 
in shape of a very short transverse segment of a circle, in others {Parandra). The antennae are fili- 
form or setaceous, generally at least as long as the body, either simple in both sexes, or serrated, 
pectinated or fan-shaped in the males ; the eyes of the greater number are kidney-shaped, surrounding 
the base of the antenna ; the thorax is trapeziform or narrowed in front ; in those which have the eyes 
rounded entire, or scarcely emarginate ; in which case the legs are long and slender, with the tars 
elongated. 
The larvae, nearly all of which reside in the interior of trees, or under the hark, are destitute of feet, 
or have them only very small ; the body is soft, whitish, thickest in front, with the head scaly, and 
furnished with robust mandibles, the other parts not being prominent. They do much injury to trees, 
especially those of large size, piercing them very deeply, or forming burrows in them. (See the memoir 
of Lansdown Guilding, in the 13th vol. of the Limujean Transactions). Others devour the roots of 
plants ; the females have the abdomen terminated by a tubular and horny oviduct. These insects 
produce a slight sharp sound, by the friction of the peduncle of the base of the abdomen against the 
inner recess of the thorax, when they alternately cause it to enter and withdraw it. 
In the system of Linnaeus, these insects form the genera Cerambyx, Leptura, Necydales, which 
GeofFroy, Fabricius, and other naturalists have endeavoured to arrange and simplify by the transposition 
of species, or by establishing other generic groups. From the immense quantity of species discovered 
since the days of Linnaeus, and the insufficiency of the characters assigned to these genera, a complete 
revision of the family had become necessary, [which, since the publication of the last edition of 
this work, has been effected by Serville, in the Annates de la Socie'te Entomologique de France, in ■ 
which a series of long memoirs has been published by this author, containing numerous new genera, 
the number of which has been greatly augmented by Messrs. Hope and Newman, in recent memoirs 
published in this country]. 
We divide the Longicornes into two primary sections. 
The first section has the eyes either deeply notched or crescent-shaped, or long and narrow ; the , 
