STENUS. 289 



n. Abdomen bordered. 



/. Elytra with a reddish-yellow spot on each, 



1, Legs black. 



A A. Maxillary palpi black, with first joint and 

 base of second joint yellow. 



Black, slightly metallic, with short whitish pubescence ; 

 the red spot on elytra placed nearer to suture than to side 

 margin. L. 2^ 1. Eather common. 8. higuttatus, L. 



H JS, Maxillary palpi black, with only first joint 



yellow. 



Very similar to S. higuttatus, but rather stouter built, 



with the frontal furrows shallower and the red spot on 



elytra placed equally distant from suture and side margin. 



L. 2^ 1. Common. S. hiijunctatus, Er. 



2, Legs chiefly yellow. 



A A, Length 2 lines. 



Black, with short, whitish pubescence ; antennae brown ; 

 apical half of femora blackish. Common. 



S. guttala, Miill. 

 Z? S. Length 2f lines. 



Black, dull, with very fine, whitish pubescence ; antennae 

 brown ; femora blackish at apex. Common. 



>S^. himaciilatus, Gyll. 

 II, Elytra unicolorous. 



1» Legs entirely black. 



A A, Thorax with central furrow either al)sent 

 or abbreviated before and beliind, and witliout 

 distinct oblique depressions on disc. 



a a. Maxillary palpi with whole of first joint 

 and at least half of second joint yellow. 



A a» Abdomen moderately closely and 

 strongly punctured, gradually more finely 

 behind, with a small ridge in middle of 

 each segment. 



Deep black, not very shiny, scantily pubescent. Thorax 

 with shallow furrow in middle ; fore parts closely and 

 strongly pimctured. L. 2| I. Common. S. Juno, Fab. 



a I), Abdomen diffusely and rather strongly 

 punctured, segments not ridged. 



u 



