THE GEOTJND BEETLES. 125 



li-oiit and behind, the margin rather strongly retlexed; basal impressions 

 wide, deep, not punctured. Elytrnl strife shallow, not punctured ; intervals 

 f^at, alutaceous. Length 12-13 mm. 



Lake and Posey counties ; rare. May 14-May 20. 



203 (769). I'LATYNU.s ciNCTicoLLis Say, Trans. Amer. Phil. Soc, II, 182:3, 



52; ibid. II, 476. 



Klongate, slender. I'ieeous black. Thorax widest at middle, morf 

 narrowed behind than in front, margins strongly reflexed near the hind 

 , angles; basal impressions deep, not punctured. Elytral strise not punc- 

 tured; intervals slightly convex. I^ength 9.5-11 mm. 



Throughout the Mtate ; common. Hibernates. February 9- 

 October 29. 



204 (770). Platynis bbflbxus Lee, Agass. Lake Sup., 1850, 205. 

 Resembles ciiicticoUis in form. Distinguished readily by the lighter 



colored antennre and legs. Thorax longer, more narrowed behind; side 

 margins more strongly reflexed, as wide in front as towards the base ; 

 front angles more prominent. Elytral strire- deeper ; the intervals a little 

 more convex. Length 9.5-11 mm. 



Laporte, Lawrence and O^ven counties; freqiient beneath rocks 

 along streams, especially those within but near the mouths of 

 eaves. April 15-November 8. 



205 (9272). PLATYNf.'i I'ABMARGiNATus Ilam., Can. But., XXV, 1893, 305. 



Elongate, slender, subdepressed. Reddish-brown ; antennaj, legs and 

 margin of thorax lighter brown. Thorax about as wide as long, side mar- 

 gins wide, strongly reflexed their full length ; front angles prominent, ob- 

 tusely rounded, hind angles obtuse; basal impressions deep, finely and 

 sparsely punctate. Elytral striae deep, not punctured ; intervals subconvex, 

 the third with three or four punctures near the third stria and another 

 near the apex of the second stria. Length 8-10 mm. 



Crawford and Jackson counties ; scarce. Occurs beneath stones 

 in channels or .shallow ravines on the slopes of high wooded hills. 

 May 16-September 24. 



Gboup C. 



The species of this group are winged, brownish, bluish or 

 greenish in color, with base of antennae, legs and occasionally the 

 thorax, reddish-yellow. The thorax is longer than wide, the mar- 

 gin less strongly reflexed, hind angles obtuse or rectangular. Ely- 

 tra elongate, about twice as wide as thora-x, scarcely sinuate near 

 apex, humeri broailly rounded, stria- deep but fine, the intervals 

 nearly flat, tlic lliird with thrc-e to seven punctures. 



