S6 DESCRIPTION OP INSECTS 



Species. 



1. H, caliginosus black; antennw, palpi, tarsi, and anterior 



coxpe ferrucinous-brown. 

 Length one inch, breadth two-fifths nearly. 



Apterous ; thorax square, black-obscure ; elytra striate ; antennx testaceous. 

 Inhabits North America. Fabr. Syst.Eleut. I., /). 188. 



Antennx and palpi ferruginous-brown ; head smooth with two slightly im- 

 pressed points before ; thorax broad, smooth ; scutel small, triangular ; body 

 black ; thighs with a range of small impressed points. Oliv. III. 35, pi. 6, 

 f. 64, and^pl. 7, f. Si. 



Carabus politus. Melsh. Catal. 



Head glabrous ; antennce, palpi, and edge of the labriim fer- 

 ruginous-brown ; an indented puncture each side on the 

 front; .labrum slightly emarginate at tip; labium unarmed 

 in the sinus. 



Trunk beneath punctured. 



Thorax with numerous minute punctures, longitudinal line 

 obsolete, area of the hind angles depressed and confluently 

 punctured, posterior angles acute. 



Tarsi and coxae of the two anterior pairs of feet ferruginous- 

 brown. 



Elytra striate ; striae impunctured ; margin opake, with nu- 

 merous minute punctures and a few larger ones. 



Venter black, rarely piceous. 



The largest species of the genus in this country ; when 

 irritated it diffuses a very pungent vinegar-like odour. If 

 the species described by Fabricius is in reality apterous, as' 

 he supposed it to be, this insect is a distinct species ; and the 

 name given by Mr. Melsheimer will be retained. It is very 

 common. 



3. H. bicolor ? black, beneath deep piceous ; antennae, palpi, 



and feet testaceous. 

 Lengthy male less — female more than three-fifths of an inch. 



