ORDER COLEOPTERA. 297 



longed but little at their extremity. (Omalium rugosum, 

 Gravenhorst, and other species with short elytra.) 



The fourth section, that of Depressa, presents us, as well 

 as the preceding, with a disengaged head, an entire labrum, 

 short maxillary palpi, and with four distinct articulations, 

 but the legs are simple, or without teeth or spines on the ex- 

 ternal side, and the tarsi have manifestly six articulations. 



Here the palpi are filiform. 



Omalium, 



In which the corslet is of the breadth of the elytra, broader 

 than the head, almost in a transverse square (with the angles, 

 or at least the anterior ones, rounded), and often bordered 

 laterally, and of which the antennae go on thickening towards 

 their extremity.* 



Lesteva, Lat. Anthophagiis. Grav., 



Which have the corslet in the form of a heart, narrowed, 

 and truncated posteriorly almost isometrical, of the breadth 

 of the liead, more narrow than the elytra, and the antennae 

 generally filiform, and with elongated articulations.-f- 



MiCEOPEPLUs, Lat., 



Distinguished by their antennae finishing in a solid knob, 

 and lodging in the fossets of the corslet, j 



Proteixus, Lat., 

 In which the antennae being grained, a little perfoliated, and 



♦ See Gravenhorst, article omalie of the Encyc. Meth., and Gyllenhall, 

 ibid. p. 198. 



f See Latreille, Gen. Crust. Insect. I. p. 296-297; Gravenhorst and 

 Gyllenhall, genus Anthophagiis. 



X See Latreille, Gen. Crust, et Insect. IV. p. 377 ; Omalium porcahim, 

 Gyll. Insect. Suec. I. Part II. p 211. Micropeplus 2}orcatus, Charp. Horae 

 Entom. VIII. 9; Gyll. ibid. 0. Staphylinoides, p. 215. 



