252 PHYTOPHAGA — DONACIIDAE. 



shorter and thicker ; fourth joint of antennae only a little 

 larger than third ; anterior angles of thorax scarcely per- 

 ceptible, the prominence gradually absorbed by angle; 

 elytra more coarsely punctured. L. 3 — 3^ 1. Rather 

 common. D. comari, Suffr. 



h. Posterior femora of male with a strong, of female 

 with a feeble tooth ; elytra without depressions ; legs 

 reddish. 



I, Length 4| — 5 J lines. 



Upper-side black, with bluish reflection, thorax more or 

 less violet; under-side with gray pubescence; abdomen, 

 antennae and legs red-brown. Thorax with a large, blunt 

 prominence on each side and obtuse anterior angles ; elytra 

 with punctured striae, the punctures being much crowded 

 and somewhat indistinct when viewed obliquely, the inter- 

 stices being strongly wrinkled. Eather common. 



D. nigra, Fab. 



II, Length 3 — 3|^ lines. 



Male with thorax narrowed behind and sinuate at sides, 

 moderately finely and scantily punctured, with obtuse, 

 raised anterior angles ; elytra purplish-black, with coarsely 

 punctured striae, interstices transversely wrinkled and 

 punctured at slioulders and scutellum. Female with 

 thorax much narrowed behind, sinuate at sides, finely and 

 rather closely punctured, anterior angles obtuse, raised ; 

 elytra bronze, with coarsely punctured striae, interstices 

 coarsely wrinkled transversely. Antennae in both sexes 

 red. Eather common. D. af finis, Kunze. 



Haeinonia, 



A. Spine at apex of elytra moderately long; length 2f — 



3^ lines. 



Yellow ; head, breast and antennae black and covered 

 with thick whitish pubescence; disc of thorax Avith two 

 short black streaks ; elytra pale yellow, with black punc- 

 tured striae (placed in pairs). Second and third joints of 

 antennae short ; second tarsal joint much longer than first 

 and third. Eare. H. equiseti, Fab. 



JB. Spine at apex of elytra rather short ; length 2| — 2-| 



lines. 



Similar to ff. equiseti, but elytra with apical spine 



