248 PHYTOPHAGA — DONACIIDAE. 



2, Disc of thorax diffusely punctured, somewhat 

 wrinkled. 

 Broad, rather convex. Bronze, with coppery reflection, 

 under-side with silvery pubescence ; base of antennae and 

 legs reddish, club of femora bronze. Thorax as long as 

 broad, disc diffusely punctured, somewhat wrinkled ; elytra 

 with deep punctured striae, interstices transversely wrinkled, 

 apex truncate. Posterior femora of male with two teeth 

 placed transversely, those of female with one small tooth. 

 L. 2)^ — 4 1. Moderately common. D. hidens, 01. 



5. Disc of thorax closely wrinkled. 



Upper-side golden-green or coppery ; under-side covered 

 with silvery hairs ; base of antennae and legs (except apex 

 of femora) reddish. Thorax broader than long, closely 

 punctured in wrinkles ; apex of elytra obliquely truncate ; 

 first abdominal segment of male somewhat impressed in 

 middle, with two blunt elevations. Posterior femora of 

 both sexes with two teeth placed transversely, the inner 

 one being very small in female. L. 3| — 41. Not uncom- 

 mon. D. dent at a, Hoppe. 



JX. Posterior tibiae of male without prominences on 

 inner-side. 



Upper-side green ; under-side with gray pubescence. 

 Thorax quadrangular, with angles scarcely prominent and 

 a blunt elevation on each side in front, surface finely and 

 closely scratched, central furrow fine ; elytra moderately 

 narrowed toward apex, which is cut off straight, with punc- 

 tured striae and some impressions, interstices wrinkled. 

 Posterior femora with two teeth in both sexes, front one 

 indistinct in female. L. 3| — 4 J 1. Not common. 



D. sparyanii, Ahr. 



6. Posterior femora of male with only one tooth ; pos- 

 terior tibiae without prominence. 



I, Disc of elytra even, or with only one impression 

 rather before middle near suture. 



Bronze ; elytra golden-green, each with a broad longi- 

 tudinal streak (often indistinct) of purple ; under-side and 

 legs with yellow pubescence. Thorax as long as broad, 

 punctured in wrinkles, with central furrow, anterior angles 

 bluntly prominent ; elytra much narrowed behind, apex 

 cut off straight, with fine punctured striae, interstices 



