556 CLASS INSECTA. 



narrow, and extends but little underneath ; in which the cors- 

 let is always transverse, almost square or trapezoid, with the 

 lateral edges arched, and more remarkable still from the 

 several differences of the feet ; the two or four anterior tarsi 

 are more dilated in the males. The under part of these 

 organs are usually silky, or furnished with a brush. 



These insects frequent sandy places. The two anterior 

 legs are usually wider, dilated triangularly at the end, and 

 proper for digging. 



In some the anterior part of the head is always emargi- 

 nated. The two anterior tarsi of the males are alone mani- 

 festly broader and more dilated than the following. 



Pedinus, Latr. 



M. Megerle and M. le Comte Dejean, have sub-divided 

 them into several other sub-genera, but without giving the 

 characters. 



Those in which the males have the first four articulations 

 of the two anterior tarsi of the same width, with the radical 

 one triangular, the three following transverse, and almost 

 equal, all the limbs narrow and elongated, the corslet nar- 

 rowed posteriorly, and terminated in acute angles, form the 

 genus Opatrinus of M. Dejean. These insects all belong 

 to America* 



Those in which the same tarsi, and in the same individuals, 

 have the first articulation, and especially the fourth, sensibly 

 more narrow or smaller than the two intermediate, whose 

 corslet is narrowed near the posterior angles, compose four 

 other sub-genera ; but whose characters are so slight and 

 graduated that these sections may be united into a single one, 

 that of Dendarus, Meg. Dej. 



• Blaps cldthrala, Fab ; ejusd. B. punctata, may be also his platynotus 

 dUatatus. 



