148 BRACHELYTRA — ALEOCHARIDAE. 



1, Head with two ocelli. 



Anterior coxae prominent, but ratlier shorter than in the 

 Oxytelidae, space behind them membranous ; posterior tro- 

 chanters more or less elongate. Homaliidac. 



2, Head with at most one ocellum. 



A A. Anterior coxae almost cylindrical, not very 

 prominent. 



Space behind anterior coxae horny ; posterior trochanters 

 elongate. Protein i dae. 



JS JB, Anterior coxae conical, prominent. 



Space behind anterior coxae membranous ; posterior tro- 

 chanters elongate. Phlococharidae. 



C C Anterior coxae globular, not prominent. 



Space behind anterior coxae horny ; posterior trochanters 

 simple. Piestidae. 



c. Posterior coxae globular. 



Antennae knobl^ed, witli grooves for their reception. 

 Anterior coxae not prominent, space l)ehind them liorny ; 

 posterior coxae standing apart ; second ventral abdominal 

 segment with a small plate entering between the posterior 

 coxae. 3fi c r op cp I i d a e. 



ALBOCHAIIIDAM, 



A, Inner lobe of maxillae horny on outer-side and mem- 

 branous with long spines or hair on the inner margin ; 

 maxilLary palpi moderately elongate, fourth joint gene- 

 rally much shorter than third, and when not so, the third 

 joint not thickened. Aleocharides. 



Ji, Inner lobe of maxillae horny on outer-side and mem- 

 branous within, rounded at apex, with a fringe of short, 

 bristly hairs ; maxillary palpi with third joint rather 

 strongly thickened and the fourth not much sliorter ; 

 eyes rather prominent ; labial palpi with two joints ; 

 anterior tarsi witli four joints, hinder pairs with five ; 

 lirst joint of posterior tarsi elongate. Gijroijliaenides. 



C, Inner lobe of maxillae entirely horny ; maxillary palpi 

 with second and third joints very long, fourth extremely 

 short. Gynmusides, 



