THE 



SIXTH AND LAST FAMILY 



OF THE 



PENTAMEROUS COLEOPTERA. 



The Lamellicornes 



Present us with antennae inserted in a deep fosset, under 

 the lateral edge of the head, always short, of nine or ten 

 articulations, for the most part, and terminating in all in a 

 knob, usually composed of the last three, which are in the 

 form of plates or laminae — sometimes disposed like a fan, or 

 in the manner of the leaves of a book, opening or shutting 

 in the same way — sometimes turned, and emboxing concentri- 

 cally ; the first, or the under one of this knob, having then 

 the form of a half-tunnel, and receiving the others, some- 

 times disposed perpendicularly to its axis, and forming a sort 

 of comb. 



The body is generally ovoid or ovaliform, and thick. 

 The external side of the two anterior legs is denticulated, 

 and the articulations of the tarsi, some males excepted, are 

 entire and without either brush or cushion underneath. The 

 anterior extremity of the head is advanced, or dilated, most 

 frequently in the manner of a hood. The nientum is usually 

 large, covers the lingua, or is incorporated with it, and carries 

 the palpi. The mandibles of many are membranous, a cha- 



