THE GEOUND 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 tibiffi is always simple and the 

 elytral striae are punctured. It includes the Indiana representa- 

 tives of the subgenera C jirfonotus, Leiocnemis and Bradytus of 

 Hayward 's paper. 



KEY TO SPECIES OF GROUP A. 



('. Prosternum not iiuirgined at tip; middle tibiae of male with two teeth 

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

 pressions. 151. PENNSYLVANICA. 

 iiti. Prosternum margined at tip; middle tibise of males not toothed. 



6. Hind tibUe of males not distinctly pubescent on the inner side; 



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



66. Hind tibiae of males distinctly, usually densely pubescent on the 



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



or no punctures between them. 



r: Scutellar stria very short or obsolete; side pieces of metastemum 



punctured. 153. bxarata. 



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



d. Prosternum of male with a shallow sparsely punctured oval 

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



154. LATIOR. 



<lil. Prosternum of male not punctured, but with a lengthwise groove, 

 more feeblj' grooved in female ; smaller, 7-8 mm. schwarzi, 



i.'l ((il.j). Amaba PENNSYLVANicA Hayward, Trans. Amer. But. Soc, 

 XXXIV, 1908, 34. 

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

 tennae 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, cariuate; basal iiiiprpssions broad, deep, indistinctly bifoveate, 

 coarsely punctured. Elytral stri;e punctured, more finely toward the apex. 

 Length 10-11.5 mm. 



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

 Oetober 9. Listed as fulvipes Putz. but Hayward shows this name 

 to have been preoccupied. 



152 (62.3). Amaba avida Say, .Tourn. Phil, Acad, Nat, Sci,, III. 1S2:'., 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 a^iex ; 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 strife deep, distinctly punctured, intervals convex. Length i<-i)fi mm. 

 (Fig. O-".-) 



Viwo and Floyd counties: scarce. April 26-June 23, 



