THE GROUND BEETLES. 



117 



bles Pterostichus perniundus, but easily distinguished by the lack 

 of dorsal punctures. 



XXX. Badister Clairv. 1806. (Gr., "a fast walker.") 



Small piceous, brownish or spotted beetles, possessing the char- 

 acters of the tribe Licinini. but having only the two basal joints oi 5 

 antennae entirely glabrous; the elytra with the eighth and ninth 

 striae well separated and the tips not sinuate. They occur beneath 

 stones and logs, usually singly and in damp localities, and are com- 

 paratively rare. The following papers are cited for students in- 

 terested in the North American forms : 



LeConte. — Short Studies of North American Coleoptera," in 

 Trans. Amer. Ent. Soc, VIII, 1880, 165. 



LeConte. — "Synoptical Table," in Bull Brook. Bntom. Soc, V, 

 1882, 7. 



Eleven species are known from the United States. Of these 

 five have been taken in Indiana. Two others may also occur, while 

 a new form is herewith described. 



KEY TO INDIANA SPECIES OE BADISTER. 



a. Elytral striae deep, the intervals narrow, convex; antennae and legs 

 reddish-yellow ; elytra reddish-brown, darker behind. 



188. NOTATUS. 



aa. Elytral striae shallow, intervals hat or nearly so. 

 h. Elytra spotted. 



c. Thorax, legs and elytra yellow ; elytra with a broad middle band, 



interrupted at the suture, and an apical spot, black, iridescent. 



189. PULCHELLTJS. 



cc. Thorax black, legs and basal third of elytra orange ; apical two- 

 thirds of elytra black with an orange spot near apex. 



190. MACULATES. 



blj. Elytra not spotted, sometimes bicolored. 



d. Thorax and legs dull brownish-yellow ; elytra piceous, margined 



at sides, base and suture with yellowish-brown ; length 5.5-6 mm. 



OBTUSUS. 



del. Black or piceous, legs yellow. 



e. Hind angles of thorax very much rounded ; length mm. 



FLAVTPES. 



ee. Hind angles obtuse, not or feebly rounded. 



f. Head as broad as thorax ; margins of latter of same color as 

 disk. 191. LATICEPS. 



ff. Head narrower than thorax ; margins of latter paler than disk. 

 g. Larger. 5-6 mm. ; margins of thorax narrow, not more re- 

 flexed towards the base. 192. micans. 

 gg. Smaller, not over 4 mm. ; margins of thorax wider and more 

 reflexed towards the base. 193. reelexus. 



