THE GROUND BEETLES. 



137 



sides feebly curved, hind angles obtuse. Elytra oval, more than one-half 

 wider than thorax, convex, faintly striate, the eighth stria entire: third 

 interval with three minute punctures. Length 2.3-2.7 mm. 



Southern half of State; frequent. April 29-November 28. Oc- 

 curs beneath rubbish in dry open woodlands. 



Tribe IX. ANCHONODERINI. 



Head oval or rounded, not prolonged or constricted to a narrow 

 neck; antennae slender. Thorax more or less cordiform, the side 

 margins distinct and with a bristle-bearing puncture on each side 

 in front of the middle, and another near the hind angle. Elytra 

 feebly margined at base, rounded at apex, without dorsal punc- 

 tures in our species. Scutellum and scutellar stria distinct. Body 

 above pubescent. Hind coxa? contiguous. Two genera may occur 

 in Indiana, though representatives of but one have so far been 

 taken. 



KEY TO INDIANA GENERA OF ANCHONODERINI. 



a, Antenna? with four basal joints glabrous. Thorax ovate, the second 

 bristle-bearing puncture in front of the hind angle: last joint of palpi 

 conical. Euphortices. 

 ud. Antenme with three basal joints glabrous. Thorax cordate, margin 

 a<?ute. the second puncture in the hind angle. XXXY. Atkanus. 



Enphorticus pubescens Dej-.', black, shining and 5 mm. in length, 

 has been taken by Dury near Cincinnati and doubtless occurs in 

 the southern third of the State. 



XXXV. Atranus Lec. 1848. (Gr., "dull or indistinct.") 



This genus is represented in the United States by a single small 

 species having the thorax slightly broader than head; elytra mar- 

 gined at base, the tips rounded and surface striate. 

 230 (845). Ateanus pubescens Dej.. Spec. III. 1S27. 122. 



Elongate, slender. Black or piceous; antennae, mouth parts, legs and 

 abdomen pale reddish-brown. Thorax longer than wide, sides feebly curved, 

 hind angles and median impressed line distinct. Elytral striae rather deep ; 

 intervals convex, each with two or three irregular rows of minute punc- 

 tures, bearing fine yellow hairs. Length 6—7.5 mm. 



Vigo. Knox and Posey counties : scarce. April 10-October 20. 

 Occurs beneath coA T er in open sandy woodland. Eesembles Plaiy- 

 nus pvsiUus very much in form, but darker in color and with the 

 elytra rounded, not sinuate at tip. 



Tribe X. CTEXODACTYLTXI. 



Antenna? slender, base free, three basal joints glabrous, first 

 joint stouter, as long as the next two: .joints three to 11. equal or 



