DESCRIPTIONS OF NEW SPECIES. 53 



subtiliter parce punctate, et sub ti liter canaliculato, elytris dense sub- 

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

 basi fere ad apieein extensa, autennis piceis, basi pedibusque ferrugineis. 

 Long. -20. 



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



1S9. B. oriiatus. Niger brevissirne pubescens, capite tboraceque opa- 

 cis, boc latitudine subbreviore lateriboa rotundatis, obsolete punutulato, 

 subtiliter canaliculato, elytris dense subtiliter punctatis, margine laterali 

 niaculaque externa apicali albidis, autennis 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. II. di visits. Niger brevissirne pubescens, capite tboraceque opa- 

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

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

 tris confertim punctatis, extrorsum diagonaliter pallidis, autennis pedi- 

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



Platte River Valley, 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 defined 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 Ury- 

 tclus fasciatus Say may be a variety of this species. 



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

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

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

 punctatis, obscure ferrugineis, abdomine ssepius rufe-piceo, nigro-annu- 

 lato, apice nigro, autennis pedibusque ferrugineis. Long. "15 — "18. 



Middle and Western States, and Lake Superior. 



192. B. Mtficornis. Niger, capite opaco, vage punotulato, fovea oc 



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

 tate, subtiliter canaliculato, <-lytris densius punctatis, nigro-piceis. apice 

 rufeseentibus, antennis piceis, basi pedibusque ferrugineis. Long. "21. 



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



