THIRD 
GREAT DIVISION 
OF THE 
ANIMAL KINGDOM. 
INSECTA. 
(CONTINUVED.) 
FAMILY VI. 
LAMELLICORNES. 
In our sixth and last family of pentamerous Coleoptera, we find 
the antennz inserted into a deep fossula under the lateral margin 
of the head; they are always short, usually consist of nine or ten 
joints, and are always terminated in a club usually composed of the 
three last, which are lamellar, sometimes flabelliform or disposed like 
the leaves of a book, opening and closing in a similar way, sometimes 
concentrically contorted and fitting in each other, the first or inferior 
then being semi-infundibuliform and receiving the others, and some- 
times arranged perpendicular to the axis and forming a sert of comb. 
The body is generally ovoid or oval,and thick, The exterior side 
of the two anterior tibize is dentated, and the joints of the tarsi, with 
the exception of those of some males, are entire and without brush 
or pellet beneath. 
The anterior extremity of the head most commonly projects or is 
dilated in the manner of an epistoma. The mentum is usually large, 
covers the ligula or is incorporated with it, and bears the palpi. The 
mandibles of several are membranous, a character observed in no 
other coleopterous Insects. The males frequently differ from the 
females, either by prominences on the thorax or head in the form of 
horns or tubercles, or by the largeness of their mandibles. 
This family is very numerous, and with respect to the size of the 
VOL, IV. B 
