DESCRIPTIONS OP NEW SPECIES. 



subtiliter parce punctate, et subtiliter canaliculate, elytris dense sub- 

 tiliter punctatis, ferrugineis, macula magna nigra triangular! communi a 

 basi fere ad apiceni extensa, antennis piceis, basi pedibusque ferrugineis. 

 Long. -20. 

 One specimen found at San Diego, California, in salt marsh. 



1S9. B. ornatus. Niger brevissime pubescens, capite thoraceque opa- 

 cis, hoc latitudine subbreviore lateribus rotundatis, obsolete punctulato, 

 subtiliter canaliculate, elytris dense subtiliter punctatis, margine lateral! 

 maculaque externa apicali albidis, antennis crassiusculis piceis, pedibus 

 testaceis. Long. -18. 



One specimen, San Francisco, California. The spot extends 

 inwards from the outer angle and forms a rounded lobe to the 

 white lateral margin. 



190. B. divisus. Niger brevissime pubescens, capite thoraceque opa- 

 cis haud dense subtiliter punctatis, illo lateribus parum elevatis, hoc 

 lateribus rotundatis, basi breviter sinuatis, subtiliter canaliculate, ely- 

 tris confertim punctatis, extrorsum diagonaliter pallidis, antennis pedi- 

 busque nigro-piceis, tibiis basi pallidoribus. Long. -14. 



Platte River Yalley, one specimen ; Point Keweenaw, Lake 

 Superior. In the specimens from the latter locality the pale sides 

 of the elytra are not limited by a diagonal line from the humerus 

 nearly to the apex, but are narrower and denned by a curved line. 

 I cannot, however, perceive any difference in form or sculpture to 

 warrant me in considering them as indicating a different species. 

 In one specimen the elytra are pale, dusky only at the base, and 

 the abdomen is piceous, with each segment annulate with black, 

 and marked with a medial blackish spot. It is possible that Oxy- 

 telus fasciatus Say may be a variety of this species. 



191. B. ainiularis. Nigro-piceus, capite opaco, utrinque parum ele- 

 vato et parce punctato fovea occipitali notato, thorace lateribus rotunda- 

 tis, vage haud profunde punctato, subtiliter canaliculate, elytris fortiter 

 punctatis, obscure ferrugineis, abdomine saepius rufo-piceo, nigro-annu- 

 lato, apice nigro, antennis pedibusque ferrugineis. Long. -15 -18. 



Middle and Western States, and Lake Superior. 



B. ruficornis. Niger, capite opaco, vage punctulato, fovea oc- 

 cipitali nulla, thorace lateribus rotundatis, opaco, vage profunde punc- 

 tato, subtiliter canaliculate, elytris densius punctatis, nigro-piceis, apice 

 rufescentibus, antennis piceis, basi pedibusque ferrugineis. Long. -21. 



One specimen, San Francisco ; Mr. Henry N. Bolander. Re- 



