1881.] PHYTOPHAGOUS COLEOPTERA. 447 



Two specimens are contained in my collection. 



Mr. Baly has lately separated the genus Pseudocolaspis into two 

 sections, founded upop the convexity or concavity of the anterior 

 margin of the episternum, retaining for the latter section Dejean's 

 name of Eubrachys. The present species belongs to this group 

 according to this arrangement. 



AuRANius, nov. gen. 



Oblong-ovate, moderately convex ; face perpendicular ; eyes 

 slightly emarginate ; antennae half the length of the body, the last 

 five joints dilated ; maxillary palpi subfiliforni, apical joint elongate, 

 its apex subacute; thorax subcylindrical, very convex, its sides 

 dentate at the middle; elytra much wider than the thorax, narrowed 

 posteriorly, longitudinally rugose, the interstices transversely 

 wrinkled and deeply punctate ; legs short, robust, tibiae widened at 

 the apex and compressed, claws appendiculate ; prosternum longer 

 than broad, narrowed at the middle, its base truncate ; anterior tho- 

 racic episternum convex. 



Type Auranius rohustus. 



On account of the anterior convex episternum, the present genus' 

 must be placed amongst the second division of the Eumolpidse. 

 While it agrees in general form of the body with the genus Corynodes, 

 the dentate lateral margin and great convexity of the thorax will 

 easily distinguish it from that and any other genus of the second 

 group of this family. 



17. Auranius robustus. 



Bronze-coloured, submetallic, pubescent below ; labrum, palpi, and 

 antennae fulvous, joint 7 and the apical ones piceous ; thorax coarsely 

 longitudinally rugous, its sides tridentate ; elytra oblong, irregularly 

 longitudinally and transversely rugose. 



Length 4-4 1 lines. 



Hab. Brazil. 



Head elongate, closely rugose and strigate, space in front of the 

 eyes with two transverse smooth raised elevations, anterior border of 

 the clypeus truncate ; mandibulae robust. Labrum and palpi fulvous, 

 apical joints of the latter piceous. Antennae about as long as half 

 the body, the third joint more than twice as long as the second, the 

 seventh to the apical joints distinctly widened, fulvous, joint 7 and 

 10 and 11 piceous. Thorax subcyHndrical, the anterior half very 

 convex and raised, the elevation divided at the top by a narrow 

 longitudinal groove from base to apex, lateral margin distinctly 

 tridentate, the anterior angles subtuberculiform ; surface closely and 

 coarsely longitudinally rugose and deeply punctured. Scutellum broader 

 than long, convex, smooth. Elytra much wider at the base than 

 the thorax, gradually narrowed towards the apex, moderately convex, 

 each elytron with about 6 rows of interrupted highly raised smooth 

 costae, connected {)artly by other transverse rugosities, the inter- 

 stices deeply punctured. Legs very robust, tibiae greatly widened 



