THE GROUND BEETLES. 103 



our largest species, and are elongate-oblong and convex in form, 

 black or piceous in hue. usually strongly shining, rarely very feebly 

 bronzed. The apical spur of front tibiie is always simple and the 

 elytral stria? are punctured. It includes the Indiana representa- 

 tives of the subgenera Cyrtonotus, Leiocnemis and Brady tus of 

 Hay ward 's paper. 



KEY TO SPECIES OF GROUP A. 



(i. Prosternuin uut margined at tip; middle tibiae ot male with two teeth 

 on the inner side ; punctures on base of thorax limited to the im- 

 pressions. 151. PENNSYLVANIA. 

 mi. Prosteruum margined at tip: middle tibi;e of males not toothed. 



1>. Hind tibhe of males not distinctly pubescent on the inner side; 



thorax punctured from side to side at base. 152. AVIDA. 



bit. Hind tibia? of males distinctly, usually densely pubescent on the 



inner side; basal impressions of thorax broad, bifoveate, with few 



or no punctures between them. 



c. Scutellar stria very short or obsolete; side pieces of nietasternum 

 punctured. 153. EXAKATA. 



cc. Scutellar stria long ; side pieces of nietasternum smooth. 



(I. Prosternuni of male with a shallow sparsely punctured oval 

 space at middle, simple in the female; larger, 8.7-10.5 mm. 



154. LATIOR. 



'/'/. Prosteruum of male not punctured, but with a lengthwise groove, 

 more feebly grooved in female; smaller, 7-8 mm. SCHWARZI. 



l.~)l '>4.V). AMARA PENNSYLVANIA Hayward, Trans. Anier. P]ut. Soc.. 



XXXIV, 1908, 34. 



Elongate-oblong, moderately convex. Black or piceous. shining; an- 

 tenna? and legs rufous. Thorax less than one-half wider than long, slightly 

 wider at base than apex, widest a little in front of middle; hind angles 

 rectangular, carinate; basal impressions broad, deep, indistinctly bifoveate, 

 coarsely punctured. Elytral stri.-r punctured, more finely toward the apex. 

 Length 10-11.5 mm. 



Southern half of State; frequent. Hibernates. February 26- 

 October 9. Listed as fulripcs Putz. but Hayward shows (his name 

 to have been preoccupied. 



152 <r>23). AMARA AVIDA Say. Journ. Phil. Acad. Nat. Sci.. III. 1X2:'.. 14S; 

 ibid. II. 95, 541. 



Oblong, convex. Black or piceous, shining ; antennae and legs rufous. 

 Thorax nearly twice as wide as long, widest in front of middle, as wide 

 at base as apex; hind angles rectangular, not carinate, basal impressions 

 ill-defined: disk smooth at middle, sparsely punctate near apex, more 

 densely and coarsely across the base. Elytra scarcely wider than thorax, 

 the stria? deep, distinctly punctured, intervals convex. Length 8-9.5 mm. 

 (Fig. 63.) 



Vigo and Floyd counties: scarce. April 2 6- June 23. 



