82 
Mr. J. S. Baly on new Genera 
Head longer than broad; carina slightly raised, linear; 
encarpae thickened, contiguous ; labrum and eyes black. An- 
tennse nearly three fourths the length of the body in the 6 , 
rather shorter in the $ ; the second joint nearly half the length 
of the basal one, two thirds the length of the third, this last 
as long as the fourth and fifth united : in the ? the antennae 
are nearly filiform, and all the joints are cylindrical; in the 
g the fifth joint is trigonate, not more dilated than the fourth 
or sixth, the four upper joints are compressed and laterally 
dilated, the eighth and ninth trigonate. Eyes and labrum 
black. Thorax transverse ; sides straight and parallel, rounded 
and converging at the apex; disk impunctate, impressed be¬ 
hind the middle with a shallow transverse curved fovea, which 
is rather more deeply depressed on either side. Scutellum tri¬ 
gonate, black. Elytra broader than the thorax, oblong-ovate, 
rather broadly margined, strongly and closely punctate, the 
interspaces granulose, subrugulose ; bright metallic greenish 
blue, the outer limb (its extreme apex excepted) fulvous. 
Diabrotica erytlirodera. 
D. ovata, valde convexa, prasina, nitida, tibiis tarsisque piceia, 
abdomine nigro, epipleuris aureo tomentosis ; capite nigro, ver- 
tice oculorumque orbitis ruffs; antennis pallidc prasinis, apice 
pallide piceis ; thorace subquadrato, rufo, dorso paullo deplanato, 
utrinque obsolete foveolato; elytris oblongis, valde convexis, 
crebro tenuissime puuctatis, infra basin transversiin depressis, 
infra callum humerale longitudinaliter sulcatis. 
Long. 4 lin. 
Hah. Peru. 
Head scarcely longer than broad, trigonate; front impressed 
above the encarpae with a deep fovea ; carina raised, linear. 
Antennae filiform, nearly equal to the body in length, pale 
grassy green ; the four outer joints pale piceous, the second and 
third short, the third about one half longer than the second, 
the fourth equal in length to the two preceding united. Thorax 
subquadrate ; sides straight and parallel, converging at the 
apex; disk smooth and shining, flattened behind the middle, 
and very faintly impressed with a shallow ill-defined fovea. 
Elytra oblong-ovate, very convex, transversely depressed 
beiow the basilar space, longitudinally sulcate below the 
humeral callus, very minutely and rather closely punctured. 
Diabrotica ojoacipennis. 
D. late ovata, postice ampliata, convexa, nigra, subtus nitida, pubo 
grisoa sat dense vestita ; supra minus nitida, thorace transvorso, 
