IIAKPALUS. 71 



B S, Posterior angles of thorax right angles, 

 but rounded at apex ; apex of elytra not pro- 

 duced. 



a a. Fifth and seventh interstices on elytra 

 without impressions at apex. 



A a. Antennae entirely yellow-red. 



Black ; palpi yellow-red, base of tibiae and the tarsi 

 rust-red. Thorax scarcely narrower behind than in middle, 

 basal iin])ressions tolerably deep, base otherwise impunc- 

 tate ; elytra scarcely broader than thorax. L. 4^ 1. Com- 

 mon. H. tardus, Panz. 



7? h. First joint of antennae red, next three 

 joints black at the base, the rest brown- 

 red. 



Rather larger and more convex than H. tardus. Black ; 

 palpi reddish, with each joint black at base ; legs pitch- 

 black, tarsi generally lighter. Thorax gradually narrowed 

 in front, basal impressions short and wi-inkled, central fur- 

 row ceasing at some distance from the margins ; elytra 

 somewhat dilated behind. L. 5 1. Common. 



H. serripes, Schonh. 



6 I). Fifth and seventh interstices on elytra 

 with some impressions at apex. 



Black; thorax often liluish-green; antennae brown, their 

 first joint red ; palpi l)rown, with the apex of each joint 

 reddish. Sides of thorax rounded and narrowed from 

 middle forward, base punctured throughout, basal impres- 

 sions feeble. L. 5 — 6 1. Rather common. 



H. c a sinus, Stev. 



2, Length not exceeding 4 lines. 



A A, Antennae reddish ; thorax much nar- 

 rowed in front, base emarginate. 



Ovate, tolerably Hat. Brown-black ; elytra and margins 

 of thorax often brown-red ; antennae and palpi reddish ; 

 base of tibiae and the tarsi red-brown. Thorax widest at 

 base, sides gently rounded, basal impressions narrow but 

 rather sharp. L. 3| — 4 1. Rare. H. servus, Duft 



JB H. Antennae brown, with red-yellow base ; 

 thorax moderately narrowed in front, base 

 straiglit or nearly so. 



