The Pselaphid^ of North America. 27 



eleventh narrower than the tenth, ovate-acuminate. Prothorax 

 slightly longer than wide, widest before the middle, median 

 basal fovea small, no median sulcus nor crests: lateral sulcus 

 shallow, feeble; the basal tubercles are minute, and behind 

 them each side is a punctiform fovea. Elytra convex, im- 

 punctured, the suture as long as the width behind the middle; 

 across the low unarmed shoulders, as wide as the head. Ab- 

 domen with the basal lateral impression broader than the 

 middle one, carinas conspicuous, rather long. Legs long, 5 

 intermediate tibice spurred, posterior feebly arcuate, also 

 spurred. $ with the front gradually declivous not separated 

 from the simple convex cl3'peus, the tenth antennal joint not 

 much longer than the ninth. 



Varies in color being sometimes more reddish or not fully 

 colored. 



Habitat. Virginia, Ohio, Kentucky. 



B. FovEicoRNis, Casey. Form, color and size as in B. 

 spretus, differing in the clypeus having a very minute tubercle 

 near the narrow sulcus below the frontal margin, which mar- 

 gin is again like sfretiis. Anteiince of the same form but 

 with the tenth joint more flattened beneath and the fovea 

 larger; the prothorax has a faint very short median sulcus, 

 the discal caring hardly discernible, the lateral sulcus appear- 

 ing as a very fine line, outside of which the surface slopes to 

 the margin. 



My material consists of six specimens of B. spretiis and 



one of B. foveicornis from Cincinnati, Ohio, which I can 



hardly separate, as the sfrctus vary in the direction of Casey's 



foveicornis^ the description of which answers exactly to my 



specimen. 



B. PUNCTiFROXs, Casey. Not known to us, but the descrip- 

 tion indicates the same relation to spretus, which varies in the 

 form of the tenth antennal joint, being in some smaller and 

 irregularly formed and with the fovea obliterated. 



B. DENTicoLLis, Casey. Form and color, sculpture of 



