78 TEKEDILIA — PTINIDAE. 



dilated inward ; first ventral alxloniinal segment almost 

 straight at apex ; body oblong. Ochina, Steph. 



II, Thorax with depression beneath for reception of 

 head. 



1, Metasternum simple. 



Last joint of palpi more or less dilated ; intermediate 

 coxae placed apart ; outer apical angle of posterior coxae 

 rounded ; first ventral abdominal segment nearly straight 

 at apex; elytra with striae. Xyletinus, Latr. 



2, Metasternum with a transverse ridge in front. 



Last joint of palpi elongate; intermediate coxae approxi- 

 mated ; outer apical angle of posterior coxae sharp ; first 

 ventral abdominal segment nearly straight at apex ; elytra 

 confusedly punctured. Lasioderma, Steph. 



2?. Metasternum and Ijase of abdomen with cavities for 

 reception of hinder pairs of legs. 



a. Last three joints of antennae larger than the rest, 

 triangular, flattened. 



I, Body oval. 



Antennae ten-jointed ; eyes distinctly emarginate ; apex 

 of prosternum forked ; metathoracic episterna nearly paral- 

 lel-sided ; posterior coxae dilated outward. 



Dorcatoma, Herbst. 



II, Body nearly hemispherical. 



1, Antennae nine-jointed. 



Eyes deeply emarginate ; apex of prosternum simple ; 

 metathoracic episterna narrow at base, dilated behind ; 

 posterior coxae much dilated outward. Coenocara, Thoms. 



2, Antennae eight-jointed. 



Eyes scarcely at all emarginate ; apex of prosternum 

 forked ; metathoracic episterna narrowed in middle ; pos- 

 terior coxae nearly parallel-sided. Anitys, Thoms. 



h. Last three joints of antennae larger than the rest, 

 rounded. 



Antennae ten-jointed ; mandibles strong ; clypeus dis- 

 tinct from forehead; body oblong; elytra as broad as 

 thorax. S^jhindus, Chevr. 



Dryophiliis, 



A , Scutellum not pubescent ; first ventral abdominal seg- 



