52 DESCRIPTIONS OF NEW SPECIES. 



been found in Arizona and Nebraska, and I am inclined to refer 

 them to the same species, and to regard it as the Oxytelus arma- 

 tus described by Say from immature specimens. 



183. B. fumatlis. Nigro-piceus, subnitidus, capite punctis paucis 

 parvis uotato, subtiliter granulate, supra antennas breviter elevato, tho- 

 race canaliculate, fortiter parce punctato, elytris sat dense punctatis, 

 lateribus late rufescentibus, abdotnine rufo-piceo, ano pallidiore, anten- 

 narum basi coxis pedibusque obscure rufls. Long. -25. 



Western States. The absence of the tubercle at the middle 

 of the head distinguishes this from B. armatus. 



184. B. semiferrugineus. Capite thoraceque nigro-piceis, rude 

 punctatis, hoc canaliculate, illo supra antennas breviter alte elevato, 

 fovea parva occipitali notato, elytris sat dense punctatis, ferrugineis. 

 basi suturaque nigricantibus, abdomine antennarumque basi rufo-piceis, 

 pedibus testaceis. Long. -20. 



Middle States. The thorax is more convex and rounded than 

 in the two preceding species, and much more coarsely punctured. 



185. B. flavipennis. Capite nigro-piceo, granulate haud punctato, 

 supra antennas elevato, fovea minuta occipitali notato, thorace rufo-piceo 

 lateribus antice hand rotundatis, subtiliter canaliculate, granulate parce 

 haud profunde punctato, elytris flavis sutura nigricante, nitidis parce 

 punctatis, abdomine nigro-piceo, segmentis duobus ultimis pallidis, an- 

 tennis basi ferrugineis, pedibus testaceis. Long. '17. 



San Diego, California ; in salt marsh. 



186. B. aualis. Rufus, ano sutura capite thoraceque nigris ; capite 

 utrinquo subelevato, et parce subtiliter punctato, thorace polite profunde 

 punctato, subtiliter canaliculate, lateribus late rotundatis, elytris sat 

 dense punctatis ; metasterno nigro. Long. -16. 



Illinois. The last two abdominal segments are black. 



1ST. B. nitidicollis. Nigro-piceus, capite utrinque subelevato, et 

 parce punctulato, thorace latitudine fere breviore lateribus late rotunda- 

 tis, nitido profunde punctato, vitta dorsali Isevi, elytris obscure ferrugi- 

 neis, basi et sutura infuscatis, modice punctatis, antennis pedibusque 

 fermgineis. Long. -14. 



One specimen ; New York. 



188. B. diagonalis. Niger brevissime pubescens, capite lateribns 

 breviter elevato, thorace latitudine subbreviore, lateribus rotundatis, 



