250 PHYTOPHAGA — UONACIIDAE. 



JS JB, Forehead with a strong, blunt prominence 

 on each side ; posterior femora indistinctly 

 toothed. 



Elongate. Upper-side coppery ; under-side with yellow 

 pubescence. Thorax tolerably quadrangular, with scarcely 

 any prominences in front, punctured in wrinkles ; elytra 

 with four distinct impressions, interstices of punctured 

 striae finely wrinkled transversely. L. 3 1. Eather com- 

 mon. B. impressa, Payk. 



c. Posterior femora without any tooth in both sexes, 

 posterior tibiae without prominences. 



J. Upper-side not hairy. 



1, Apex of elytra truncate. 



A A. Elytra more than double as long as 

 together broad. 



a a. Elytra unicolorous or nearly so. 



Elongate, rather flat. Dull bronze-green or purple ; 

 under-side with silvery pubescence ; antennae black, base 

 of each joint lighter ; femora bronze, their base and the 

 curved tibiae dull red-yellow. Thorax quadrate, closely 

 punctured, apical margin slightly rounded ; elytra with 

 four depressions, interstices of punctured striae trans- 

 versely wrinkled, apex truncate, outer angle distinct. 

 L. 4 — 5 1. Common. D. linearis, Hoppe. 



b b. Elytra with a distinct purple streak 

 near suture on each. 



Upper-side metallic-green, with a purple streak on each 

 elytron, rarely entirely coppery or purple ; under-side with 

 silver-gray pubescence. Thorax very closely punctured, 

 witli a prominence on each side in front, anterior angles 

 blunter than in I), semicuprea, apical margin distinctly 

 rounded ; elytra with some feeble depressions, punctured 

 deeply in rows, interstices finely wrinkled transversely, 

 apex cut off straight or slightly emarginate, outer angle 

 distinct. L. 3| — 4 J 1. Eather common. 



D.typhae, Brahm, 



2? jB. Elytra less than twice as long as together 

 broad. 



Upper-side green or bronze-green, elytra coppery on 



