lOS DESCRIPTION OP INSECTS 



Species. 



1. H. *undulatus ferruginous ; elytra trifasciate with black. 

 Length about three-twentieths of an inch. 



Dytisous undulatus. Melsh. Calal. 



Body ferruginous, very numerous, minute, villous punctures, 



hairs adpressed to the surface. 

 Head destitute of large, indented, frontal punctures; antefince 



and palpi paler. 

 Thorax at base and tip black, lateral edge very slightly ar- 



quated. 

 Elytra^ suture and three undulated irregular bands black, of 



the latter, one is basal, one central, and the other subter- 



minal. 



The bands sometimes occur dilated and decurrent, so as 

 to form a common black disk to the elytra. 



S. H. *oppositus blackish ; head and base of the thorax fer- 

 ruginous ; elytra with six whitish marginal spots or sub- 

 fascia. 



Length rather less than three-twentieths of an inch. 



Body with very numerous, villous, minute punctures, hairs 

 adpressed to the surface. 



Head rufous or ferruginous, four or six indented, frontal, dis- 

 tant punctures. 



Thorax ferruginous, black at tip, about three indented punc- 

 tures, placed transversely. 



Elytra black, each with an irregular humeral spot, another 

 placed upon the margin behind the middle, and a third 

 apicial one yellowish, edge yellowish. 



Postpectus and vetiter blackish or deep piceous ; pectus and 

 feet yellowish-testaceous. 

 This was sent to me as a distinct species by Dr. J. F. 



Melsheimer. It is very like undulatus. 



3. H. *niger black, villous, obscure, immaculate ; head and 

 lateral margins of the thorax and elytra obscure rufous. 



