156 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
DoNACiA LONGicoLLis new species. 
Elongate, narrow; color above bronze, cupreous, metallic green, 
blue or purple; antennae generally reddish with the exception of the 
first joint, which is metallic, occasionally all or some of the joints reddish 
at base and dark metallic at apex; legs reddish, femora in apical half 
more or less metallic. 
Head shortly prolonged behind the eyes, then truncate and con- 
stricted; neck rather wide, median line deep and fine; surface densely 
punctate-rugose, antennae reaching to about middle of elytra in the male, 
a little shorter in the female, third joint distinctly longer than the second 
and as long or nearly as long as the first joint, occasionally as long as the 
fourth joint. 
Prothorax moderately shining or nearly dull, generally slightly 
longer than wide; anterior angles .feebly prominent; lateral tubercle 
distinct, separated from the disk by a moderately deep, arcuate im- 
pression, laterally more or less distinct; lateral margins below the 
tubercle more or less strongly converging behind and feebly or not 
arcuate; median impression more or less distinct, occasionally very 
faint or absent; basal impression generally distinct, sometimes scarcely 
evident; surface sculpture variable, generally either finely strigulate or 
finely rugulose, with or without larger punctures, which are often very 
numerous especially in the apical and basal regions. 
Elytra shining; ante-median impression feeble; post-median im- 
pression generally indistinct or absent; serial punctures moderate, finer 
towards apex; surface with more or less distinct, transverse rugae; 
intervals finely and sparsely punctate, at apex more or less rugose; 
lateral margin, from a postero-lateral view acute from base to or below 
middle of elytra. 
Body below densely and finely punctate and sparsely pubescent 
with cinereous, short hairs; side pieces of prosternum posteriorly moder- 
ately coarsely strigate, anteriorly more finely and often rather vermicu- 
late-rugose; posterior femora extending to the apex of the third ventral 
segment, moderately strongly clavate and at base distinctly narrower 
than at apex, below unarmed in both sexes or occasionally with a small, 
more or less acute tooth, which is occasionally rather an acute angulation. 
Length: 6.25-8 mm. 
Male: First ventral segment more or less deeply excavated along 
middle; last ventral segment impressed at middle of apex; last dorsal 
segment truncate at apex. 
Female: Last ventral and dorsal segments broadly rounded at 
apex; lower vaginal plate nearly as in emarginata. 
