COLEOPTERA. 137 
Loneitrarsus, Lat. 
All the characters of Altica proper’ or of the preceding subgenus, 
but the posterior tarsi are at least as long as the tibiee to which they 
are attached *. 
FAMILY VII. 
CLAVIPALPI. 
The Insects of our seventh and last family of the Tetramera are 
distinguished from all those of the same section, having, like them, 
the under part of the three first joints of the tarsi furnished with 
brushes and the penultimate bifid +, by their antenne, which are ter- 
minated in a very distinct and perfoliated club, as well as by their 
maxillze, armed on the inner side by a nail or corneous tooth. In 
some few the joints of the tarsi are entire, but they are removed from 
the other Tetramera with analogous tarsi, by their body, which is 
almost globular, and contracts into a ball. 
Their body is most commonly of a rounded form, and frequently 
even, very convex, and hemispherical; the antenne are shorter than 
the body, the mandibles emarginated or dentated at the extremity, 
and the palpi terminated by a large joint; the last joint of the max- 
illary palpi is very large, transversal, compressed, and almost lunate.- 
The form of their organs of manducation shows them to be gnawers, 
and in fact the species indigenous to Europe are found in the Boleti 
which grow on the trunks of trees, under their bark, &c, 
Some have the penultimate joint of the tarsi bilobate, and do not 
contract themselves into a ball. 
They may be re-united in the single genus 
Erotytus, Fab. 
Here, the last joint of the maxillary palpi is transversal, and almost 
lunate or securiform. 
Eroryuvus, Fab. 
In the Erotyli properly so called, and from which the Atgithi, Fab., 
do not appear to us to be essentially distinct, the intermediate joints 
of the antennee are almost cylindrical, and the club, formed by the 
last ones, is oblong; the interior and corneous division of their max- 
ill is terminated by two teeth. 
They are peculiar to South America f. 
* The seventh, such as the A. lurida, utricilla, quadripustuluta, dorsalis, holsatica, 
parvula, anchuse, atra, of Olivier, Gyllenhall, &c. 
+ The last has a knot at base, a character also observed in the Coccinelle. 
t See Oliv., Col., V, 89; Schcenh., Synon. Insect., II, genera Agithus, Erotylus ; 
and the Monograph of this genus by M. Duponchel, who has continued the work of 
Godart on the Lepidoptera of France, inserted in the Mémoires du Muséum d’ His- 
toire Naturelle. 
VOL. IV. L 
