384 APPENDIX. 



anterior angles, which are obtusely rounded; posterior an- 

 gles a little angulated; scutel rounded behind, with short, 

 cinereous, prostrate hairs; e/^/^z-tt not dilated behind; punc- 

 tures larger than those of the thorax, often confluent; a 

 slightly prominent line between the middle and suture, a 

 depressed one between the middle and lateral margin; se- 

 veral slightly elevated lines near the tip; disk with two 

 series of two or three much dilated alternate indented 

 spaces; tip rounded; beneath blackish with small punc- 

 tures ;yee^ blackish-piceous. 



Length half an inch. 



This insect occurred on the shore of St. Peter's river, 

 and on that of Red river of Lake Winnepeek. The large 

 indentations of the elytra have a fortuitous appearance. 



2. H. venustus. Dark brassy, punctured; posterior an- 

 gles of the thorax slightly excurved; elyti'a iridescent. 



Inhabits Pennsylvania. 



Body densely punctured; antennse 3.xvdi palpi blackish- 

 piceous; thorax, posterior angles acute, the lateral edge 

 near them being a little curved outwards; elytra with 

 brilliant coppery and green vittas changing place with 

 the direction of light; strias profound, and with the con- 

 vex interstitial spaces impunctured; beneath cupreous, 

 brilliant. 



Length more than three-tenths of an inch. 



This species closely resembles the micans, Fabr. which 

 has been described under different names by several 

 authors; it has the same beautiful variable colour upon 

 the elytra, which induced Olivier to call that insect vitta- 

 ius, and Beauvois to give the name of taeniatus, but it is 

 a small species, the lateral edge of the thorax is a little 

 curved outwards near the posterior angles, whilst that of 

 micans is rectilinear in the same part, and the interstitial 



