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XXVII. A Description of such Genera and Species of Insects, 
alluded to in the ** Introduction to Entomology" of Messrs. Kirby 
and Spence, as appear not to have been before sufficiently noticed 
or described. By the Rev. William Kirby, F.R.S. and L.S. &c. 
Communicated by the Zoological Club of the Linnean Society. 
Read December 21, 1824. 
: DECADE THE FIRST. 
As many insects are noticed in the Introduction to Entomology 
that either properly belong to genera not yet established, or are 
altogether unknown, or have not before been specifically de- 
scribed, I shall take the liberty of presenting to the Zoological 
Club, by decades, or larger portions, as my avocations may per- 
mit, descriptions of them, beginning with some Coleoptera. The 
first I shall notice is one of the many additional new genera that 
may be separated from the great Linnean genus Carabus. 
Fam. Lebiade. 
HExAGONIA. 
Labrum transversum antice ciliatum. 
Mandibule forficatæ, edentulæ, triquetræ, acutæ. 
Labium* trilobum : lobis lateralibus triangularibus longioribus 
acutis, intermedio obtuso supra inequali. 
* The Labium of the Introduction to Entomology, for reasons there assigned, is 
synonymous with the Mentum of M. Latreille; and the mentum is the piece on which 
the latter sits. 
VOL. XIV. 4D Lingua 
