THE GROUND BEETLES. 



63 



TO (292). Aedistomis viridis Say. Trans. Amer. Phil. Soc, 

 II. 1823. 21 ; ibid. II, 451. 

 Greenish-black, shining ; mandibles, antennae and legs red- 

 dish-brown. Thorax with a median impressed line, smooth 

 except along the margins. Elytra not striate, each with three 

 or four rows of rather fine, scarcely impressed punctures, each 

 puncture bearing a short, erect hair, the hairs plainly visible 

 only from the side. Length 5 mm. (Fig. 47.) 



Lake, Lawrence and Posey counties; scarce. May 16-August 



15. 



71 (293). Ardistomis puncticollis Putz.. Mon. 1846. 129. 



Resembles viridis. but more slender and with the disk of thorax sparse- 

 ly and coarsely punctured, each puncture bearing a bristle-like hair. Punc- 

 tures of elytra coarser and more numerous. Length 5 mm. 



Southern half of State ; frequent. Hibernates as imago. Feb- 

 ruary 23- June 23. 



Subfamily II. HARPALINAE. 



The members' of this subfamily have the epimera of the meso- 

 sternum variable in width but not reaching the coxa, the middle 

 coxal cavities therefore enclosed on the outer side by the junction 

 of the meso- and metasterna ; head marked with one or two bristle- 

 bearing punctures over each eye; thorax with a similar puncture 

 at the side and another at the hind angle, very rarely without the 

 latter and still more rarely without either; front tibia? always 

 either obliquely sinuate or deeply emarginate within, the inner spur 

 remote from apex. 



For convenience the subfamily was divided by Horn into two 

 great groups or sections as follows: 



KEY TO SECTIONS OF HARPALIX.E. 



a. Head with two punctures above the eye. each bearing a single hristly 

 hair. Section I. Harpaliisle bisetos.e. p. G4. 



Head with but one bristle-bearing puncture above the eye. 



Section II. Harpalin.e vxisetos.e. p. 156. 



When two punctures occur, the front one is close to the margin 

 of the eye in front, and the hind one a little remote from the eye, 

 opposite its hind margin. Where there is but one bristle-bearing 

 puncture it is a little removed from the margin of the eye, and is 

 situated opposite the middle of the eye or a little behind that point, 



[5—23402] 



