184 COMMBITRS. 



acMtifi divarkath, testocch, carina margini valde approximata, 

 conferlim puuclato. ebjtris striis punchilatis, interstitiis rtujose 

 punctulatis, pedibuspiceis, anlennis ni gris, basi piceis, siibserratis, 

 articulo tortin quarto non breviore, subcylindrico. — Long. 5'", 3. 



Lec. loc. cit. p. 449, 49. 



One spécimen, Oregon. Although evidently allied to thc others 

 in this division, the third joint of thc antennœ is considerably nar- 

 rower than the following oncs : (he curions reflexed margin of the 

 anterior thoracic angles will easily distinghuish this species : the 

 sides of the thorax are almost straight, sHglitly rounded atthe apex, 

 and before the basai angles : the first joint of the tarsi is slightly 

 longer than te second. 



12. CoRYMDiTES coLossLS. Niger, capite thoraceque subnitidis, 

 fortiter punctatis, fronte late concara, thorace (Ç) convexo vix ob- 

 solète canaliculato, latitudinc haiid breviore, apice angustiorc, la- 

 teribus modice, magis ad apicem rotimdatis, angulis posticis paulo 

 divergentibus fortiter carinatis, linea lœvi dorsali obsoleta postice 

 notato, elytris fere opacis, dense punctatis et rugulosis, punctis vix 

 'inajoribus striatim digestis, anlennis thorace brevioribus, valde ser- 

 ratis, articulo oio %ido sescpii longiore, haud dilatato. — Long. 1"07. 



Le Conte, Procccd. Acad. Nat. Se. novemb. 1861, p. 548. 



California ]Mr. S. S. Rathvon. The joints of the antennœ 4-10 

 are very strongly triangular, gradually smaller; the elcventh joint is 

 also triangular, with (lie ohlong appendage still more distinct than 

 usual. 



13. CoRYMBiTES ANTHRAX. Elougatus, uigcr, nitidus, pube brevis- 

 sima cinerea parce obsitus, capite fortiter dense puncfato, fronte 

 fere plana thorace lateribiis confluenter medio parcius fortiter punc- 

 tato, oblongo, latitudine vix sesqui longiore, lateribus subrectis, an- 

 gulis posticis acutis divergentibus carinatis, elytris striis punctatis, 

 interstitiis subplanis disperse punctatis, antennis modice serratis, 

 articulo oio ^t-to paulo longiore. — Long. 7"'3 



Lk Conte, loc. cit. 



