IIYnnAENA. 141 



mnch broader in front tlian base of thorax, rounded behind, 

 witli distinct rows of punctures. L. | 1. Eatlier common. 



H. testacea, Curt. 

 Ji, Metasternum witliout raised lines. 



a. Elytra with more than six rows of punctures between 

 the suture and the humeral angle. 



Z, Upper-side black, witli margins of thorax and 

 elytra l)rown-yellow. 



Somewhat compressed ; thorax transverse, strongly 

 punctured, longitudinal impressions indistinct ; elytra 

 broader than thorax, with rather strong punctures. L. | 1. 

 Not common. H. palustr i s, Er. 



ZI, Head and thorax blackish, elytra brown. 

 Somewhat oblong ; thorax almost as long as broad, rather 

 strongly punctured, witli a short, indistinct central furrow, 

 longitutlinal impressions moderately strong ; elytra dis- 

 tinctly broader than thorax, rather parallel-sided, each with 

 nine or ten rows of almost square punctures. L. 1 1. 

 Common. R. rip aria, Kug. 



ZZZ. Upper-side black or blackish. 



1, Thorax with two deep transverse impressions, 

 disc punctured more feebly than margins. 



Elongate ; thorax rather broader than long, longitudinal 

 impressions distinct ; elytra rather parallel-sided, each with 

 eight rows of large angular punctures. L. f 1. Eare. 



H. angustata, Sturm. 



2. Thorax wdth two indistinct transverse impres- 

 sions, disc scarcely more feebly punctured than 

 margins. 



Broad ; tliorax ahnost as long as broad ; longitudinal 

 impressions moderately strong ; elytra slightly rounded at 

 sides, punctures roundisli. L. | 1. Ratlier common. 



H. nigrita, Germ. 

 h. Elytra with not more than six rows of punctures 

 between the suture and the liumcral ansle. 

 Z. Inner rows of punctures on elytra regular. 

 1, Elytra rounded at apex. 

 A A. Thorax as long as broad. 

 . Elongate. Head blackish ; tliorax pitchy, sometimes 



