THE GROUND BEETLES. 53 



44 (201). NEBRIA PAI.UPES Say, Trans. Amer. I'hil. ooc., II, 1X2::, is ; ibid. 



II, 404. 



Elongate-oval. Black, shilling; legs and antenna 1 pale yellow. Thorax 

 short, broad, much narrowed behind, margins rather wide, strongly re- 

 I'exed ; hind angles obtuse; disk smooth with a deep median impressed 

 line. Elytra deeply striate. the stri;e finely punctured on the sides; inter- 

 vals convex, the third with five larger punctures on the outer side. Length 

 10-12 mm. 



Lawrence, Franklin and Vigo counties ; scarce. April 15-July 

 11. Occurs beneath stones and rubbish close to running- water. 

 Probably to be found sparingly throughout the State. 



Tribe VI. SCARITIXI. 



Species variable in size, having the antenna? rising from under 

 a frontal plate ; head with one or two bristle-bearing punctures 

 above the eyes ; mandibles without a similar puncture on the outer 

 side ; labrum short, emarginate or sinuate. Body pedunculate, scu- 

 tellum not visible. Elytra not, or rarely, slightly margined at 

 base ; prosternum not prolonged behind the coxa 11 ; front coxal cavi- 

 ties closed behind; hind coxa 1 touching; legs stout, more or less 

 adapted to digging. The tribe 1 is composed of six genera, all of 

 which are represented in Indiana. 



KEY TO GENERA OF SCARITINI. 



<i. Species of large or medium size, 15 or more mm. in length; basal joint 

 of antenna' long; mentum broad, concealing at the sides the base 

 of the maxilhe; one bristle-bearing puncture above the eye and one 

 at hind angles of thorax. 



1>. Form broad, size large; hind angles of thorax distinct; elytra with 



humeral carina. IX. PASIMACHUS. 



l>b. Form narrow, size medium; hind angles of thorax wanting; elytra 



without humeral carina. X. SCARITES. 



an. Species of small size, less than 10 mm. in length; basal joint of an- 



tenn;e short; base of maxilla- not covered by the mentum; two 



bristle-bearing punctures above each eye and two at hind angles of 



thorax. 



r. Margin of elytra entire; mandibles flat and curved. 

 <L Front tarsi slender in both sexes. 



c. Thorax globular or oval; terminal joint of male palpi dilate;! 



and excavated beneath. XI. DYSCHIRITS. 



cc. Thorax more or less quadrate; palpi similar in the sexes, not 



dilated or excavate in male. XII. CLIVINA. 



d(L Front tarsi dilated in both sexes. 



f. Head not striate; mentum feebly emarginate. 



XIII. .ISPJDOCLOSSA. 



ff. Head with numerous lino stria- or longitudinal grooves; mentum 

 deeply emarginate. XIV. SCIII/OGENIUS. 



