ORDER COLEOPTERA. 213 



Others in a large general section which he terms, with me, 

 feronia. But even as to amara, in vain have I sought in 

 the antennas, and the parts of the mouth, any characters 

 which can precisely distinguish them from the other genera. 

 That which is drawn from the tooth in the middle of the 

 emargination of the chin, without speaking of its trifling im- 

 portance, is very equivocal. This tooth, in all these carabici, 

 has appeared to me to have at the end an emargination, but 

 a little more distinct or deeper in some than in others. The 

 antennas of many are a little grained, or composed of arti- 

 culations, more short, or more rounded towards the summit, 

 but it is impossible to assign in a rigorous manner the limits 

 of this distinction. The same may be said with regard to 

 the concavity of the anterior edge of the labrum, and the 

 form of the corslet. 



The feroniae may form three divisions ; 1st. The species, 

 generally winged, Avhose body, more or less oval, is a little 

 convex, or arched above, with the antennae more filiform, the 

 head proportionally more narrow, and the mandibles a little 

 less projecting. In their habits they approach the zabri and 

 harpali. Such are the Amara, in which the corslet is trans- 

 verse ; some species, rather shorter, whose corslet is widened 

 from front to rear, form the genus Leirus of certain authors. 

 The Scolytus Jlexuosus of Fabricius would appear referable 

 to this division, but, according to M. le Comte Dejean, the 

 four anterior tarsi are dilated. It has appeared to me that 

 they were more so internally than externally. This insect 

 may form a proper sub-genus ( cyclosomus ) . See, for the pre- 

 ceding, the third volume of the sjjecies of this naturalist. 



To the first division of Feronia also belongs Pcecilus, in 

 which the corslet is almost as long as broad, and the antennae 

 rather short, have the third articulation compressed and 

 angular. Also Argutor, similar to Pcecilus, but with 



