THE GBOUNI) BEETLliP. 183 



I'haracters. when once recognized, being more evident than in many 

 of the species of Bemhidium, Chlrcnius and other genera of the 

 family. 



337 (1087b). Hakpalus I.o^-GlOK Kirby, Faun. Bor. Amer., IV, 1S38, 43. 

 Elongate, narrower than the two preceding. Thorax about as long as 



broad (4.5x4 mm.), gradually narrower behind the middle, distinctly nar- 

 rower at base than in compar : hind angles obtuse; basal impressions wide, 

 shallow, densely punctate. Elytra alutaceous, intei-vals of male subconvex, 

 the fifth to eighth finely and sparsely punctate. Length 13.5-15 mm. 



Jlarion, Vigo and Floyd counties; scarce. June 2-Septem- 

 ber 11. 



338 (1087c). Harpalus erythropus Dej., Spec. IV, 1828, 258. 



Oblong. Thorax nearly square, slightly narrowed behind, sides feebly 

 curved, hind angles but little rounded ; basal impressions broad, shallow, 

 finely and densely punctate. Elytral intervals alutaceous, not punctate. 

 Length 10.5-12 mm. 



Southern luilf of State, (■cmmon; less so northward. April 27- 

 October 5. A pair were ta.kon mating on September 29. 



339 (1119). Harpalus testaceus Lc^., Trans. Amer. Phil. Soc, X, 1853, 



.385. 



Oblong-oAal. Coloi' given in ke,\'. Thorax (me-half broader than long, 

 sides feebly curved to behind the middle, thence sinuate to base; margin 

 rather broad, depressed, with a ruw of punctures; hind angles rectangular, 

 basal impressions small, sparingly punctate. Elytral strife deep ; intervals 

 convex. Length 10-10.5 mm. 



Starke and Posey counties ; scarce. August 23-September 19. 

 Occurs in sandy localities. The hind angles are more prominent 

 than in any other species of Harpahia. 



Group B. 



The species of this group avei'M<;e much smaller than those of 

 Group A. 



KEr TO INDIANA SPECIES OF GROUP B. 



a. Elytra obliquely but distinctly sinuate at tip ; abdomen without ac- 

 cessory setie. 

 6. Bicolored above; head and thorax reddish-brown, elytra black or 

 piceous. 

 c. Thora.x; scarcely narrowed behind; basal depressions shallow, finely 

 punctured. 340. dichrols. 



cc. Thorax distinctly narrowed behind ; basal impressions deeper, more 

 coarsely punctured. 341. vuueculus. 



66. Uniform black or piceous above. 



cl. Legs reddish-brown; extreme margin of thorax iiale. 



