TENEBRIONIDAE. 321 



TENBBRIONIDAE, 



A, Under-side of tarsi spiny or bristly, or if with fine 

 hairs {Heliopathes), also with metasternum very short 

 and eyes divided. 



«. Last joint of maxillary palpi hatchet-shaped. 



-Z. Eyes kidney-shaped ; apical spines of tibiae long. 



1. Ligula nearly hidden by mentum ; intercoxal 

 process broad, quadrangular. 



Head more or less prominent, rhomboidal, narrowed 

 behind ; labrum prominent ; clypeus slightly emarginate 

 in front ; inner lobe of maxillae with a horny hook ; scu- 

 teUum generally small ; elytra with reflexed margin broad, 

 apex often produced ; anterior femora not toothed ; anterior 

 tibiae with two rather stout apical spines ; hinder pairs of 

 tibiae round; metasternum very short. Blaps, Fab. 



2, Ligula prominent ; intercoxal process narrow, 

 triangular. 



Head sunk in thorax ; labrum scarcely prominent ; 

 clypeus entire ; inner lobe of maxillae without hook ; 

 thorax transverse ; scutellum small ; tibiae slightly tri- 

 angular, with two slender spines, anterior pair finely 

 tootlied; metasternum very short. Cnjpticus, Latr. 



11, Eyes nearly or quite divided ; apical spines of 

 tibiae short. 



1, Anterior tarsi of male dilated, hairy beneath; 

 clypeus not strongly emarginate. 



Head sunk in thorax to eyes ; last joint of labial palpi 

 triangular ; penultimate joints of antennae not longer than 

 broad ; mandibles split at apex ; cheeks much more promi- 

 nent than eyes ; thorax imperfectly or not contiguous to 

 elytra, moderately emarginate in front ; anterior tibiae 

 strongly triangular, the others slightly compressed ; meta- 

 sternum very short. Heliopatlies, Muls. 



2, Anterior tarsi of male not dilated, spiny beneath ; 

 clypeus rounded in front and strongly triangularly 

 emarginate. 



Head sunk in thorax to eyes ; last joint of labial palpi 

 ovoid, pointed ; penultimate joints of antennae transverse ; 

 mandibles split at apex ; cheeks much more prominent than 



VOL. II, y 



