BY ARTHUR M. LKA. 595 



(jg. Front femora dentate. 



/. Mesosternal receptacle with thin U-shaped 

 wails. 

 j. Elytra conjointly mucronate at apex...... Oi>osyllis. 



}j. Elytra rounded or separately mucronate 



at apex Tychkeus. 



il. Mesosternal receptacle stouter and more or 

 less raised and vaulted. 



h. Rostrum thin _ Pseudometykus. 



]ck. Rostrum stout Metyrus. 



- BB. Eyes coarsely faceted. 



C. Metasternum shorter than first abdominal segment. 



. Claw-joint squamose CH.i;TEcTK'ronus. 



II. Claw-joint glabrous, at most setose. 



m. Femora dentate Acrotychkeus. 



mnt,. Femora edentate. 



n. Prothorax very feebly produced at apex and 



not impinging on head Meniomorpha. 



nn. Prothorax distinctly produced at apex and 



overhanging head Metyrculus. 



■CC. Metasternum longer than first abdominal s%gment. 



D. Prothorax more or less deeply excavated on disc Pseudapries. 



DD. Prothorax convex Mexios. 



DDD. Prothorax fiat. 



E. Tibiae with terminal hook only. 

 o. Body squamose. 



2j. Femora edentate Achopera. 



%ip. Femora dentate Achoperinuk. 



00. Body glabrous Bepharus. 



EE. Tibiie with terminal hook and subapical 

 tooth. 



F. Tibi;t^ very strongly ridged Sympikzoscelus. 



FF, Tibi;e compressed but not ridged Mitrastethus. 



Notes oil the above Table. 



AAA. — 111 Tychreus tlie receptacle appears (in the majority of 

 species) to be open or nearly so, but when piobed with a pin, it 

 is seen to be slightly cavernous. 



C. — Along middle, sometimes the reverse is the case at the 

 sides. 



