120 



A. MATTHEWS. 



Head, thorax and elytra, eastaneous Crotcliii. 



Entirely black, or fuscous black. 

 Form exceedingly convex. 



Size very large, no lateral setfe Ciodlliauiii. 



Size moderate, with erect lateral setse grossa. 



Form moderately convex. 



Thorax widest before the middle. 



* Elytra long and parallel crassicollis. 



Elytra short and roundetl.. abrupta. 



Thorax widest at the base. 

 Antennse yellow. 



Elytra short and fuscous. 



Abdomen black atomaria. 



Abdomen pale rufesceilS. 



Elytra black, not short. 

 Elytra attenuated. 



Thorax very broad lalicollis. 



Thorax moderate. • 



Antennse dusky yellow COgiiata. 



Antennae bright yellow faSjcictilaris. 



Elytra not attenuated. 



Elytra with strong erect setae minor. 



Elytra without lateral setse sitkaensis. 



Antennfe black, or pitchy black. 



Hinder angles of thorax dilated laterally Heill'ici. 



Hinder angles of thorax moderate laterally. 



Antennae short loseplii. 



Antennse long diflinis. 



Thorax scarcely wider than the elytra, hinder angles of thorax acute, often 

 produced. 

 Entirely eastaneous. 



Hinder angles of the thorax not produced. 



Form oblong aiiibigiia. 



Form thorax and elytra dilated in middle biflilatata. 



Hinder angles of the thorax much produced. 



Thorax widest at the base Californica. 



Thorax widest before the base cas^taiiea. 



Head and thorax black, elytra rufous. 



Form broad, quadrate xanthocera. 



Form moderate, oblong. 



Abdomen eastaneous brevior. 



Abdomen black parallela. 



Entirely black, or fuscous black. 

 Antennse black. 



Form long and parallel, size large parallelopipeda. 



Form short, size moderate. 



Elytra widest at the apex aspera. 



Elytra, with the sides, nearly straight. 



Thorax widest at the base, deep black viciiia. 



Thorax widest before the base, fuscous black sericaii$«. 



Antenna? vellow. 



