Dec, 1919.] Shaeffer: Xotes on Chrysomelid.f. 313 



form is more elongate, the prothorax always dull, the antennal joints 

 longer and narrower, the posterior femora in both sexes longer and 

 without tooth. In one of the males an exceedingly small, feeble 

 tubercle is visible on the posterior femora. 



Donacia glabrata new species. 



Male. — General form of subtilis with similar prothorax, metallic green, 

 shining, elytra without transverse rugs on disk, prothorax with a deeply im- 

 pressed median line ; legs reddish, apical half or so metallic, posterior femora 

 without tooth. Head densely punctate, punctures finer than those on pro- 

 thorax ; median line deeply impressed ; moderately tuberculate on each side 

 of median line; antennal joints longer and narrower than in subtilis; third 

 joint shorter than in rugosa, though the outer joints are longer than in that 

 species. Prothorax almost as in subtilis, anterior angles not prominent, obtuse, 

 posterior angles moderately prominent; median impression wide and deep, 

 basal impression distinct but less deep ; lateral tubercles indistinct ; surface 

 rather coarsely and sparsely punctate at middle, punctures denser at apex and 

 base and at sides more or less confluent and transversely strigose. Elytra a 

 little more than three times as long as prothorax and about twice as long as 

 wide at base ; punctures forming the regular rows relatively large, intervals 

 not or scarcely wider, smooth, shining and with scarcely any transverse rugae 

 on the disk which are present at sides and near apex, the latter rotundate- 

 truncate. Body below moderately densely pubescent, pubescent short and 

 white; legs reddish; femora in about apical half metallic, posterior femora 

 moderately strongly clavate, rather sparsely punctate and without tooth ; last 

 dorsal segment emarginate-truncate at apex. Length 7 mm. 



Clementon, N. J. 



This species by its form resembles closely subtilis, from which it 

 differs in its smooth, shining surface, longer antennal joints, bicolored, 

 more shining and more sparsely punctate femora, the posterior one 

 without tooth. Rugosa has also bicolored posterior femora, which is 

 feebly toothed in the male, but glabrata is more slender, with shorter 

 third antennal joint and all the joints black, the outer ones longer 

 than in rugosa, the prothorax with very few punctures on the disk, 

 median line deeply and rather broadly impressed, and elytra smooth, 

 shining with scarcely any transverse rugae on the disk. 



Donacia megacornis Blatchley. 



This species was described from a single specimen from Indiana 

 but I have specimens from Lakehurst, Lakewood, Pt. Pleasant. X. 



