INHABITING NORTH AMERICA. 87 



each side, and, excluding the angles, hardly wider than 

 the peduncle. 



Elytra blackish, each with obsolete, marginal, pale spots, 

 one placed before the middle not attaining the humerus, 

 one smaller behind the middle attaining the margin, and 

 one smallest before the liumerus, stri;v impressed, want- 

 ing at tip, punctures distinct. 



Feet testaceous. 



Very similar to the preceding, but may be distinguished 



by the larger anterior spot being placed ronsidcraMy I)e- 



hind the humerus and by the more profoundly impressed 



strife. 



9. B. *inornatum black ; feet piceous ; elytral stri^r obsolete, 

 impunctured. 



Length one-tenth of an inch. 



Bodif deep black, polished. 



Antenme brown ; base and palpi rufous. 



Thorax nearly as broad as the elytra, somewhat narrowed 



behind, lateral edge hardly excurved behind, posterior 



angles rectangular, basal edge rectilinear. 

 Elytra black, dorsal stria; obsolete, obtuse, impunctured. 



lateral striae wanting. 

 Feet piceous. 

 Often under the bark of decaying trees. 



10. B. *flaTicaiidus \y\cto\xs ', elytra with obsolete, impunc- 

 tured strife, and pale at tip. 



Length three-fortieths of an inch. 



Head blackish ; antennw, labrum, and palpi pale rufous. 



Thorax piceous-black, transverse quadrate, broadest in the 

 middle, not contracted behind, posterior angles rectan- 

 gular, basal edge rectilinear. 



Elytra i)lackish, from near the middle to the tips ycllowisli 

 white, striar im[)unctured, wanting each side and at tip, in 

 terstitial lines cotivex. 



Feet pale rufous J venter piceous at tip. 



