15G BEACIIELYTRA — ALEOCHARIDAE. 



b h. Labial palpi with two joints, first rather 

 strongly thickened, second much narrower. 



Ligula entire, very short; spines on inner lobe of 

 maxillae not closely-placed ; thorax at least double as 

 broad as long ; abdomen slightly narrowed behind ; legs 

 short, anterior tarsi with four joints, hinder pairs Math five; 

 first joint of posterior tarsi elongate. Flacicsa, Er. 



2. All tarsi with four joints. 



Mandibles dissimilar. Ligula cleft to the base ; labial 

 palpi with three joints, second joint much narrower than 

 and about half as long as first, third narrower tlian second 

 and rather shorter than first; third joint of antennae a 

 little longer than second ; thorax slightly narrowed behind ; 

 abdomen parallel-sided, rather slender, flat ; legs very 

 short, first joint of posterior tarsi double as long as second. 



Hygronoma, Er. 



II. Mandibles short, split at apex. 



Ligula cleft nearly to the base ; labial palpi as in 

 Hygronoma ; first three joints of antennae equal in length, 

 slender ; thorax quite half as broad again as long, almost 

 equally narrowed in front and behind, with a broad shallow 

 central furrow, narrowed in front ; abdomen parallel-sided ; 

 legs as in Homalota. Schistoglossa, Kr. 



b. Antennae with ten joints. 



I. Inner maxillary lobe witli spines toward apex. 



Ligula small, sj)lit to base ; labial palpi with first two 

 joints thick, last joint thin, awlshaped ; antennae inserted 

 before eyes. Oligota, Mannorh. 



II. Inner maxillary lobe thickly pubescent on inner- 

 side. 



Ligula semicircular, with a minute process in middle ; 

 maxillary lobes elongate, narrow and straight ; maxillary 

 palpi very long, last joint thin, awlshaped, scarcely shorter 

 than third ; labial palpi with first joint thick, second rather 

 thick, and third a little shorter, awlshai)ed ; antennae in- 

 serted at margin of forehead. Soiiiatium, WoU. 



