54 



FAMILY II. ( 'A RABID^E. 



ec. Margin <if elytra interrupted behind the middle and with a fold 



alung the suture 

 tarsi dilated. 



mandibles slender, prolonged, not curved ; front 



XV. ARDISTOMIS. 



IX. PASIMACHUS Bon. 1813. (Gr., " all + fight.") 

 Large, broad species, having the color black, the thorax and 

 elytra usually bordered with blue ; thorax broad, with distinct hind 

 angles; elytra, rounded or subacute at apex; front tibiae palmate. 

 They occur beneath stones, logs and rubbish in open woods and 

 along the borders of cultivated fields, preferably in sandy places, 

 and feed upon larva? of various kinds, especially those of the army 

 worm. For this reason they are to be classed among the most bene- 

 ficial of the Carabida". Eleven species are known from the United 

 States, four of which have been taken in Indiana. The principal 

 papers treating of the genus are as follows : 



LeConte. "Notes on the Species of Pasimachus" in Bull. Buf- 

 falo Soc. Nat. Sci., I, 1874, 266. 



. "Synoptic Table" in Bull. Brook. Ent. Soc.. I, 1879, 

 15. 



Fig. 40. 

 (After LeConte.) 



Fig. 41. 

 (After LeConte.) 



Fig. i'2. 

 (After LeConte.) 



KEY" TO INDIANA SPECIES OF PASIMACHUS. 



a. Elytra obtusely rounded at apex, feebly striate; spine of middle tibia- 

 compressed, obtuse at tip; hind angles of thorax obtuse, n it promi- 

 nent. 45. SUI;L.T-:VIS. 

 an. Elytra subacute at apex, not striate; spine of middle tibia? slender, 

 ac-ute; thorax more or less constricted at base, its hind angles promi- 

 nent. 

 1>. Hind tibia' of male not densely pubescent on inner side; form 



broad : elytra smooth. 4G. ii 



lil>. Hind tibiii' of male densely pubescent on inner side near the tip. 



