84 PROCEEDINGS OP THE ACADEMY OP 



California, Mr. Rathvon. Related to B. nitidum, (Eudromus re. Kir by) 

 but differs by the less shining surface, the obliquity of the external basal 

 fovea, and the color of the legs. 



12. Nebria 1 i v i d a , aptera testacea, thorace postice angustato, lateribus 

 parum sinuato, angulis posticis subrectis, elytris octostriatis, stria 3ia quadri- 

 f'oveata, 5ta bifoveata, 6ta trifoveata. Long. - 43. 



Cape Flattery; Dr. Newberry. Body depressed, uniform pale testaceous ; 

 head smooth, with faint impressions. Thorax wider than the head, one half 

 wider than long, gradually, but consideribly narrowed posteriorly, sides 

 Tounded in front, very faintly sinuate behind, posterior angles slightly obtuse, 

 not at all rounded, dorsal line entire, transverse impressions well marked, 

 base sparsely punctured and rugous, basal impressions not elongated, lateral 

 margin moderate. Elytra almost elliptical, with eight moderately deep strife, 

 not punctured, but marked with rows of brown quadrate cells in the substance, 

 simulating punctures, the third stria has four or five punctures, the fifth has 

 two to five behind the middle, the sixth has three or four also behind the 

 middle, the scutellar stria is short ; at the widest part they are one half wider 

 than the thorax. 



13. Necrophilus tenuicornis, elongato-ovalis, nigro-piceus, parum eon- 

 vexus, thorace latitudine duplo breviore, lateribus rotundatis indeterminate 

 piceis, angustius depressis, parce subtiliter punctato, fortius versus latera, ely- 

 tris striis subtiliter crenulatis, 2nda 4taque punctis pluribus impressis, anten- 

 nis fere filiformibus, articulis externis crassitie fere duplo longioribus, pectore 

 pedibusque piceis. Long. "22. 



Puget Sound, Mr. Davidson. Much smaller and narrower than N. hydro- 

 philoides, larger and narrower than N. 1 a t u s , but specially distin- 

 guished from both by the antennae not being thickened externally : the second 

 joint is almost equal to the fourth, and the third is scarcely one half longer than 

 either. By these characters it approaches Pteroloma, but the mandibles are 

 not many toothed, nor are the palpi acuminate at tip, and the inner lobe of 

 the maxilla? appears as in Necrophilus : the legs are also moderate in length as 

 in the latter genus. 



14. Peltis s e r r a t a , oblongo-ovalis, sordide atra, opaca, rude punctata setis 

 erectis curvatis hispida, elytrorum thoracisque lateribus fortiter serratis, tho- 

 race insequali medio elevato, canaliculato, angulis posticis elongatis spinifor- 

 mibus, elytris tricostatis, internis duabus interruptis in callis inagnis 

 postice desinentibus. Long. -40. 



Washington Territory, collected on the N. W. Boundary Survey, by Mr. 

 Geo. Gibbs. This species closely resembles P. silphides, (Boletophagus 

 silphides Newman, which was considered as identical with P. dentata, of 

 Northern Europe, by Dejean.) It is however larger, somewhat narrower, and 

 has the posterior angles of the thorax more elongated, and prominent. 



15. Aulonium aequicolle, elongatum parallelum, nigrum nitidum, 

 capite thoraceque subtilius punctatis, hoc latitudine vix longiore, lateribus late 

 rotundatis, lineis solitis insculptis, disco sequaliter paulo convexo, elytris punc- 

 tulatis, striis punctatis postice obliteratis. Long. -20. 



Sacramento Valley, Mr. Rathvon. Of the same form and sculpture as Au. 

 parallelopipedtim, and differing only by the thorax being not at all 

 excavated or tuberculate anteriorly, and by the sides being a little more 

 rounded. 



Pseudopuancs. 



Palpi maxillares articulo ultimo elongato, cylindrico ; mandibular breves : 

 antenna? corpore breviores, articulis externis vix crassioribus, lmo crassiore 

 conico paulo longiore : caput linea utrinque supraoculari insculpto ; pedes 

 mediocres, tarsis brevibus, articulo lmo parvo, 2ndo triangulari, 3io 2ndo 

 aequali longe bilobato, 4to vix conspicuo, 5to longiore unguiculis parvis. 



[Feb. 



