402 Mr. Kirey’s Century of Insects. 
Mandibule breves, validissimæ, corneæ, apice edentulæ integer- 
rime extus rotundatæ intus acute incurve. 
Maxille mandibuliformes, arcuate, breves, validæ, corneæ, lobo 
edentulo fornicato, apice subemarginato. 
Palpi subclavati. 
Antenne decem-articulatæ : clava triphylla, semiovata, pilosa. 
Poststernum caput versus protensum, conicum. 
Unguiculi omnes simplices. 
I have given the characters of Anoplognathus, as well as of the 
two genera I have here established, that I might afford a clearer 
view of those particulars in which they differ, in order that the 
claim of the latter to be considered as dístinct genera may be more 
readily perceived. In habit and externa! appearance they cer- 
tainly appear very unlike each other; but their oral organs are 
upon the whole so similar, that from these they might perhaps be 
thought to belong to the same genus, and be well arranged under 
Anoplognathus. A near view of them, however, will I trust jus- 
tify me for giving them as distinct. 
In the first place, Anoplognathus is distinguished, besides its 
general habit which at first sight appears different, from both 
Geniates and Apogonia by the remarkable protended conical post- 
sternum observable in all the species of that genus; in the next, 
by having all its claws simple and undivided ; in this respect re- 
sembling Rutela. Its labium also is of a different shape, unless 
it may be regarded as connate with the mentum. From Geniates 
it differs in having maxille without teeth at the end and very 
concave, and, which is important, its antennæ have one more 
joint. ‘Those remarkable circumstances, peculiar to the males 
of Geniates, of a stiffly-bearded mentum and dilated anterior tar- 
si, furnish also a striking distinction. From A pogonia it may be 
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