10 
CHRYSOMELIDyE. 
Genus DONACIA. 
Donacia, Fabr. Syst. Ent. 1775/ p. 195 ; Thomson, Skand. Col. viii, 
1866, p. 107. 
Type, J). crassipes , Fab. 
Range. Europe ; N. America ; Asia ; India. A single species 
from Java, Australia and Madagascar respectively. 
Characters those of the group ; head with deep lateral and one 
central groove ; eyes large and convex ; antenna) slender, filiform. 
Thorax subquadrate, sides straight and angles generally pointed. 
Elytra wider at base than thorax, punctate-striate, interstices 
generally finely transversely wrinkled ; third joint of tarsi deeply 
bilobed, claws simple. 
12. Donacia aeraria, Baly, Trans. Ent. Soc. (8) iv, 1866, p. 7 ; Jacoby, 
Ann. Mus. Civ. Genova , xxvii, 1889, p. 150. 
Cupreous or greenish-aeneous ; head obscure fulvous, antennae 
rufous, basal joints aeneous, others stained with black. 
Cupreous or greenish-aeneous ; head ful- 
vous ; antennae half the length of the body, 
obscure rufous, basal joints more aeneous, 
the others more or less stained with black 
at the apex, second and third joints nearly 
equal, each half as long as the fourth 
joint. Thorax rather broader than long, 
sides nearly straight, anterior angles rectan- 
gular, not produced ; upper surface trans- 
versely sulcate at the base, medial line 
impressed by a distinct longitudinal groove, 
much broader and deeper towards its base ; 
disc entirely covered with fine transverse 
ruga). Scutellum finely pubescent. Elytra 
with the sides straight and parallel at their 
anterior half, thence obliquely narrowed 
towards the apex, the latter truncate ; upper 
surface flattened along the suture, deeply punctate-striate, inter- 
stices thickened and slightly raised, obsoletely transversely rugose. 
Length 6-7 mm. 
Hah. India ; Burma : Bhamo ; Ceylon ; Malay Peninsula : 
Tringganii; Japan. 
'Whether this insect has in reality the great geographical distri- 
bution attributed to it by Baly is somewhat doubtful, as so many 
species of Donacia are very closely allied. The type was, however, 
described from Malay specimens. 
13. Donacia delesserti, Guer. Icon. Reg. Anim., Ins. 1844, p. 258 ; 
Lacord. Mon. Phytoph. i, 1845, p. 116 ; Jacobson, Ilor. Soc. Ent. 
Ross, xxvi, 1892, p. 419. 
Very similar to D. aeraria, Baly, which may possibly be only a 
