150 FAMILY II. CARABID^E. 



truncate at base. Four species are known from the United States, 

 two of which have been taken in Indiana. They occur in damp, 

 sandy localities. 



262 (90S). APRISTUS CORDICOLLIS Lee.. Ami. Lye. Nat. Hist, IV, 1848, 190. 



Black with slight tinge of blue ; antennae piceous ; legs black. Thorax 

 cordate, slightly wider than long, side margins a little broader and more 

 renexed near base; median line deep, reaching basal margin; hind angles 

 acute, slightly prominent. Elytra! striae deeply impressed; intervals rather 

 .strongly convex. Males with three joints of front tarsi dilated and with 

 two rows of small scales beneath. Length 3.5-4 mm. 



Marion, Vigo and Morgan counties; rare. April 6-October 15. 

 Larger than the next, the elytra flatter, the intervals more convex. 



263 (909). APRISTUS SUBSULCATUS Dej., Spec. II, 1826, 451. 



Piceous, bronzed ; elytra often brownish. Thorax with sides less curved 

 in front, less sinuate behind than in cvrrlicoUis; hind angles rectangular 

 nnt prominent, the margins not wider behind; median line fine, usually not 

 [caching the basal margin. Length 3-3.5 mm. 



Vigo and Lawrence counties ; rare. May 29-July 20. 



XLIV. BLECHRUS Motsch. 1848. (NL., "black.") 



Very small black shining species, differing from those of allied 

 genera by having the base of thorax slightly lobed; men turn not 

 toothed ; ligula small with two seta in front ; claws of tarsi serrate. 

 Two of the three species have been taken in Indiana. 



264 (911). BLECHRUS NIGRINUS Mann., Bull. Mosc., II, 1843, 184. 



Elongate, depressed. Black or piceous, shining. Thorax one-fourth 

 wider than long, broadest one-third from apex; sides moderately curved in 

 front, slightly sinuate near base, hind angles rectangular ; disk very finely 

 wrinkled, median line deeply impressed. Elytra oblong, nearly parallel, 

 one-third longer than head and thorax: faintly striate near the suture. 

 Length 3-3.5 mm. 



Vigo County; scarce. April 15. Occurs beneath bark in open 

 woods. 



26.". (913). BLECHKIS pi ,sio Lee.. New Sp. N. Ainer. Col.. I. 1863, 6. 



I'.lack-hnm/od. very shining. Thorax not wider than long, widest just 

 behind the apex, more narrowed behind, the hind angles indistinct. Elytra 

 almost smooth, not longer than head and thorax, their sides distinctly 

 curved. Length 2 mm. 



Marion and Clark counties ; scarce. May 5-October 9. Occurs 

 beneath bark on oak logs. One of the smallest of our Carabida-. 



