RHYNCHITES. 165 



tured striae. L. 2 — 2| 1. Rather common. 



B. populi, Lin. 



jB» Posterior coxae strongly transverse, more or less pro- 

 longed along posterior margin of episterna of metathorax. 



a. Head without circular furrow behind eyes. 



Tibiae toothed on inner-side. 



I. Elytra confusedly punctured in wrinkles, with 

 scarcely any traces of striae. 



1, Eyes rather flat ; length 3 lines. 



Greenish or purple, with golden reflection, apex of 

 rostrum, antennae and tarsi black-blue, with long hairs. 

 Head elongate ; thorax closely and deeply wrinkled, in 

 female with a pointed spine, directed forward, on each side 

 in front. Rare. li. auratus, Scop. 



2, Eyes hemispherical ; length If — 2 lines. 



Purple, with golden reflection ; rostrum, antennae and 

 legs black-blue ; hairs long, but not closely placed. Head 

 short ; rostrum long and slender, thorax without spines in 

 both sexes, coarsely and closely punctured in wrinkles, 

 sides rather more rounded in female than in male. Rare. 



H. Bacchus, Lin. 



II, Elytra with more or less regular punctured striae, 

 not wrinkled. 



1, Rostrum long and thin ; head more or less sunk 

 in thorax. 



A A, Length 2 lines. 



Upper-side dark bronze, dull ; under-side darker ; pubes- 

 cence scanty, whitish-gray. Thorax almost broader than 

 long, closely and rather finely punctured, scarcely dilated 

 at sides ; elytra with deep punctured striae. Not un- 

 common. B. cup reus, Lin. 

 B B. Length 1— li line. 



a a. Elytra red, with blackish suture. 



Dark bronze ; elytra as above ; base of antennae and 

 legs often red-brown ; pubescence brown. Punctuation 

 extremely close ; thorax with central furrow ; elytra with 

 deep punctured striae. L. 1 — 1| 1. Common. 



B. aequatus, Lin. 



b b. Elytra blue, green or bronze. 



