HISTERIDAE. 411 



J5 JB. Elytra witli only two or three indistinct 

 striae, abbreviated behind (except sutural one). 



Antennae inserted under margin of forehead, funiculus 

 not thickened at apical end ; its first joint much longer 

 tlian rest ; cavities for reception of club of antennae in 

 middle of sides of prosternum, not deep ; anterior tibiae 

 strongly curved, toothed, ending in a strong spine turned 

 outward, tarsal cavity badly defined ; prosternum with or 

 without marginal stria, anterior process prominent ; meso- 

 sternum with a deep marginal furrow at sides, not continued 

 in front and generally united by a bi-angular transverse 

 stria ; pygidium sculptured in one sex ; reflexed margin of 

 elytra without subhumeral depression. Par o mains, Er. 



2, Anterior tibiae broader in middle than at apex. 



A A, Club of antennae apparently solid; cavity 

 for its reception in anterior angle of prosternum. 



Antennae inserted under margin of forehead, scape very 

 large, swollen, funiculus thickened at apical end ; tarsal 

 cavity badly defined ; anterior process of prosternum not 

 prominent ; elytra with one lateral stria and the three 

 outer dorsal striae, with rows of hairs ; reflexed margin 

 furrowed. Hetaerius, Er. 



jB B. Club of antennae distinctly three-jointed ; 

 cavity for its reception in middle of side of 

 prosternum. 



Antennae inserted under margin of forehead, funiculus 

 not thickened at apical end, its first joint much longer than 

 rest, thick ; anterior tibiae scarcely toothed ; tarsal cavity 

 badly defined ; anterior process of prosternum not promi- 

 nent ; striae on elytra abbreviated behind, when at all. 



Bendrophilus, Leach. 



. b, Prosternum without separate process in front. 



jT. Antennae inserted under margin of forehead. 



1. Cavities for reception of club of antennae reach- 

 ing anterior margin of prosternum and separated 

 by a narrow space. 



A A, Anterior tibiae with indistinct spines, 

 posterior pair nearly without teeth. 



Club of antennae longer than in Gnathoncus, oval, com- 

 pressed ; longitudinal lines of prosternum convergent in 



