324 HETEKOMERA — TENEBRIONIDAE. 



emarginate ; tibiae linear ; metasternum elongate. 



Alphitophagus, Steph, 



^, Eyes not more prominent than cheeks ; inter- 

 mediate coxae without trochantina ; apical spines 

 of tibiae distinct, short. 



A A» Antennae ending in a more or less distinct 

 club ; head prominent. 



Last joint of maxillary palpi long oval, flattened and 

 obtuse at apex ; clypeus prominent, trapeziform, thin at 

 sides, slightly emarginate in front ; eyes divided half-way 

 through, lower portion distinctly larger than upper ; elytra 

 elongate, parallel-sided ; metasternum elongate ; intercoxal 

 process not broad, triangular. Triholium, Mc Leay. 



Ji S. Antennae gradually thickened ; head not 

 prominent. 



a a. Thorax not or only slightly transverse, 

 with base truncate or nearly so. 



A a. Eyes deeply emarginate. 



Last joint of maxillary palpi hatchet-shaped, a little 

 elongate and obliquely truncate ; clypeus of male a little 

 narrowed and forming a rounded prominence in front, that 

 of female slightly dilated on sides, widely rounded in front ; 

 mandibles of male with a more or less long horn, curved 

 upward, simple and hooked at apex, those of female hidden 

 beneath clypeus ; eyes nearly entirely divided, lower portion 

 much larger than upper ; antennae a little shorter than 

 thorax, third joint longer than the following ones, joints 

 four to eight obconical, very short, last three a little dilated ; 

 elytra more or less elongate, nearly parallel-sided ; meta- 

 sternum elongate ; intercoxal process not broad, triangular. 



Gnathocerus, Thunb. 



a h. Eyes slightly emarginate. 



Clypeus more or less prominent, a little raised at sides, 

 gradually narrowed and truncate in front ; eyes slightly 

 emarginate ; third joint of antennae distinctly longer than 

 fourth ; thorax at least as long as broad, rounded or trun- 

 cate at base ; elytra elongate, nearly cylindrical, nearly 

 always incompletely covering pygidium ; tibiae very elon- 

 gate triangular ; metasternum elongate ; intercoxal process 

 not broad, triangular. Hypophlocus, Fab. 



