260 INSECTS. COLEOPTEEA. 



Gen. PROGNATHUS, Lat. Siagomum, Kirby. 



Antennae inserted on each side of the head under a pointed pro- 

 jection ; palpi filiform, the last joint of the maxillary ones 

 conical and elongated ; eyes globular and projecting ; thorax 

 flat, bordered, almost square, but a little broader before. 



P. quadricornis, Lat. Chestnut-brown, with the antennae, mandi- 

 bles, two anterior horns, and the elytra paler ; eyes and abdomen 

 black. 2 lines long. England. -Kirby and Spence, i. pi. 1, fig. 3. 



Gen. OXYTELUS, Grav. Staphylinus, Lin. 

 Antennae short, thickening towards the extremity, inserted be- 

 fore the eyes under a margin ; palpi short, subulate at the 

 end ; body linear, depressed ; exterior side of the first \wo 

 legs spinous. 



The males of some species have two horns on the head, and another under the 

 thorax. The tarsi fold on the outside of the legs, which are notched at their extre- 

 mity ; the thorax is almost semicircular or square, and rounded posteriorly. 



O. tricornis, Grav. Black j two obtuse short horns on the head, 

 above the insertion of the antennae, in the male ; two simple tu- 

 bercles in the same place in the females ; thorax cordiform, with 

 a groove in the middle, that of the male armed with a spine ; 

 elytra red brown. 3 lines long. Europe Nouv. Diet. xxiv. 325. 



Gen. PIESTUS, Grav. Staphylinus, Fab. 

 Antennae filiform and longer than half of the body, with the 



three first joints club-shaped, and the others cylindrical; legs 



spinous. 

 P. sulcatus, Grav. Body linear and depressed ; head small ; legs 



dentated and ciliated. Inhabits Brazil. Nouv. Diet. xxvi. 284. 



Gen. OMALIUM, Grav. Staphylinus, Fab. 

 Antennae inserted before the eyes under a margin, thickening 

 towards their extremity ; palpi filiform. 



O. rivvlare, Grav. Body shining black ; elytra deep brown ; feet 

 reddish brown ; thorax marked with two furrows ; an impressed 

 point at the internal angle of each eye. 1^ line long. Inhabits 



France Lat. Hist. ix. pi. 80, fig. 6. 



Gen. LESTEVA, Lat. Anthophagus, Grav. 



Antennae inserted before the eyes, as in the preceding, of uni- 

 form thickness, with the joints like reversed cones, and the 

 last cylindrical ; head rugous and orbicular. 



L. punctulata, Lat. Blackish, dotted, almost smooth, with the an- 

 tennae and feet obscure brown. Inhabits Europe, in moist places. 

 Lat. Gen. i. pi. 6, fig. 1. 



Gen. PROTEINUS, Lat. 



Antennae inserted before the eyes, thickening towards the ex- 

 tremity ; palpi subulate at the point ; maxillary ones with the 

 last joint almost as long as the preceding. 



