150 BRACHELYTRA — ALEOCHARIDAE. 



second ; labial palpi with three joints, second rather 

 shorter but scarcely narrower than first ; head constricted 

 behind ; thorax narrowed from middle forward ; abdomen 

 slender, parallel-sided ; first joint of posterior tarsi elongate. 

 Male elytra with a fold on each side of suture behind. 



Bolitochara, Mannerh. 



11, Ligula entire, elongate. 



Third joint of maxillary palpi considerably longer and 

 narrower than second, fourth joint small ; labial palpi with 

 three joints, second not much narrower or shorter than 

 first ; head not narrowed behind ; thorax rather longer than 

 broad, contracted behind, with a central furrow ; abdomen 

 parallel-sided ; front pairs of tibiae strongly spined, first 

 four joints of posterior tarsi equal in length. 



Phytosus, Rudd. 



b. Labial palpi elongate, two-jointed. 

 Z, Ligula elongate, entire. 



Maxillae elongate, narrow, upper part of inner margin of 

 inner lobe with about twelve short, closely placed spines, 

 and isolated longer ones ; third joint of maxillary jjalpi 

 almost shorter than second, last joint long and thin ; liead 

 scarcely constricted behind ; thorax double as broad as 

 long, sides and base slightly rounded, base with a transverse 

 depression ; abdomen parallel-sided, first joint of posterior 

 tarsi not longer than tlie others. Elytra of male slightly 

 raised near suture behind. Silusa, Er. 



IT, Ligula broad, triangular, bifid at apex. 



Maxillary lobes elongate, narrow, the inner one fringed 

 toward base, set with sj)ines toward apex, which is hooked, 

 the outer one pubescent at apex ; maxillary palpi with 

 third joint large, nearly oval, fourth joint much shorter 

 tlian third, awlshaped ; laljial palpi with first joint rather 

 long, second narrower and somewhat shorter ; head elongate, 

 eyes obsolete ; thorax scarcely transverse, narrowed toward 

 base ; abdomen dilated toward apex ; first four joints of 

 posterior tarsi equal in length. Actocharis, Sharp. 



M, Paraglossae reaching scarcely or not at all beyond base 

 of ligula. 



a. Antennae with eleven joints. 



I, Mandibles simply pointed. 



