ORDER COLEOPTERA. 197 



of the labial palpi large, nearly securiform, the first four 

 tarsi short, in form of a reversed heart, the fourth being 

 bilobed.* 



Orthogonius, Dej.-f- 



Have the tarsi formed like the last, but the antennae are fili- 

 form, and the exterior palpi are terminated by an articulation 

 nearly cylindrical. 



COPTODERA, Dej. 



Have the same palpi as the last, the antennae more or less gra- 

 nulated, the first three articulations of the anterior tarsi short, 

 broad, and the same of the four posterior tarsi nearly filiform, 

 the penultimate of all bifid, but not divided into two lobes. 

 All the species mentioned by the Count Dejean (Spec. I. 

 273) are foreign, and for the most part American. 



The second section, Bipart'iti, Scaritides. Dej., which we 

 may also call, from their habits, Diggers, is formed of Cara- 

 bici, with elytra entire, and slightly sinuated at their posterior 

 extremity ; having the antennae grained and bent, the head 

 broad, the corslet broad, commonly cup-shaped, or nearly 

 semicircular, separated from the abdomen by an interval 

 which gives thereto a pediculated appearance ; the feet are 

 generally but little elongated, with the tarsi most frequently 

 short, alike, or but little different in both sexes, without a 

 brush underneath, and simply furnished with hairs, or cover- 

 ed lashes. The two fore-legs are indented on the outside, as 

 if palmated or digitated in many, and the mandibles are often 

 strong and indented. The emargination of the chin has a 

 tooth. They all remain on the ground, hide themselves 



* The same work, 



f Dej. Spec. I, p. 279 ; the species are entirely exotic. Near this sub- 

 genus should be placed, apparently, that of Hexagonia of Mr. Kii'by, Lin. 

 Trans. XIV. 



