312 Journal New York Entomological Society. [Vol. xxvu. 



Yaphank, Lg. Isld. (female type), Lahaway and Lakehurst, N. J. 



I have seen ten specimens collected by myself at Yaphank and 

 Lahaway, by Messrs. Davis and Leng at Lahaway and at Lakehurst 

 by Mr. Davis. 



This distinct species, for which I could not find a description, is apt 

 to be confused with cincticomis. However, the antennae are heavier, 

 the prothorax has a different shape and sculpture, the posterior 

 femora are much shorter and have only a single, feeble tooth in both 

 sexes, the last dorsal segment of the female is less elongate and sub- 

 truncate or broadly rounded at apex and the mesosternal process is 

 narrower than in cincticomis. 



Donacia edentata new species. 



Female. — Form depressed, nearly as in palmata but smaller. Head and 

 prothorax coppery bronze, the latter distinctly and very finely alutaceous and 

 dull ; elytra shining, castaneous with a more or less distinct bluish-green, 

 metallic tint ; underside paler, femora above more or less blackish ; antenna 

 dark above and pale beneath. Head densely punctate with moderate punc- 

 tures, median line deep, without frontal tubercles ; antennae reaching backwards 

 beyond the middle of elytra, third joint longer than second and a little shorter 

 than fourth but about equal in length to the first joint. Prothorax slightly 

 wider than long, sides more or less undulate ; anterior angles obtuse, not 

 prominent ; lateral tubercles obsolete ; basal angles moderately prominent ; 

 median line entire and deeply impressed ante-basal impression shallow ; sur- 

 face dull, finely alutaceous at middle, more coarsely so at sides, finely and 

 sparsely punctate. Elytra depressed, nearly four times as long as the pro- 

 thorax and a little longer than twice as long as wide at base ; apical angles 

 truncate ; punctures of the regular rows moderate, intervals smooth and shin- 

 ing, feebly convex. Body below very finely and densely punctate and covered 

 densely with short white pubescence. Posterior femora moderately elongate 

 and rather feebly clavate, without tooth. Mesosternal process slightly longer 

 than wide. Last ventral segment broadly rounded at apex ; last dorsal moder- 

 ately elongate, narrowing to apex, the latter narrowly truncate or rotundate- 

 truncate. Length 9 mm. 



Male. — Smaller and slightly narrower, with longer antennal joints and 

 posterior femora, the latter also without tooth; last dorsal truncate-emarginate 

 at apex. Length 7 mm. 



Crum Lake, N. Y. (Wm. T. Davis), Centerton, N. J. (Chas. Lie- 

 back), found on Nymphcca odorata by Mr. Wm. T. Davis. 



This species is very distinct from any other known so far. By 

 description and superficially it resembles parvidcns somewhat, but the 



