I40 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
D. parva Lac. is also a synonym of metallica and not of flavipes. 
Lacordaire's description does not agree with the latter at all but very 
well with bluish-black specimens of metallica. 
D. metallica is distinguished from the species which have the third 
and fourth antennal joints small, equal or sub-equal, the hind femora 
without or with a small tooth and the last dorsal segment truncate at 
apex in the male, by its rather more evenly convex form, elytra with at 
most feeble ante-median impressions, prothorax below very finely rugose 
at sides, above always distinctly and generally finely punctate. Though 
the punctures in some parts are occasionally more or less confluent, 
producing a rugose sculpture, the prothorax is never entirely rugose in 
this species, and there is usually a smooth space on each side of median 
line which is very sparsely punctate. 
DoNACiA GERMARi Mannerheim. 
Plate V, figs. 8 and 13. 
Elongate; color variable, aeneous, bronze, cupreous, blue, black 
or prothorax metallic and elytra flavous or prothorax and elytra flavous; 
antennae entirely black or more frequently the joints more or less annu- 
late; legs entirely pale but the posterior femora at least has often a 
metallic spot of variable size near apex; below entirely metallic, occa- 
sionally the last ventral segment at apex flavous. 
Head constricted behind the eyes which are moderately prominent; 
median line fine and deep; surface densely punctate; antennae reaching 
to about the middle of elytra or slightly beyond, third joint distinctly 
longer than second, occasionally as long as the first and nearly as long 
as the fourth. 
Prothorax about as wide at apex as long; anterior angles distinct, 
rarely oblique but sometimes distinctly projecting laterally; basal angles 
more or less prominent; lateral tubercle distinct though often feebly 
separated from the disk by a shallow impression; sides converging 
towards base and often more or less arcuate; median impressed line 
generally absent or very feeble; basal impression generally distinct; 
surface alutaceous and dull, rarely slightly shining, punctuation variable 
from finely and sparsely to rather densely punctate, at least, in some parts, 
punctures rather shallow, not deeply impressed. 
Elytra usually with distinct impressions, the post-median generally 
feeble; surface with more or less distinct, coarse, transverse rugae, 
intervals feebly punctate with minute punctures; lateral margin generally 
acute in basal half. 
