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genera and new species of Halticide, 155 
Cacoscelis opacipennis, n. sp. 
Under side dark metallic blue; the antenne, tibie, and tarsi, 
black; head and thorax fulvous, impunctate ; elytra dark blue or 
greenish, opaque, finely and closely punctured and minutely 
granulate. Length, 3 lines. 
Slightly widened posteriorly. The head impunctate, the frontal 
tubercles obsolete, the clypeus triangularly raised, palpi black ; 
antenne extending beyond the middle of the elytra, black, the 
third and following joints equal; thorax transversely subquadrate, 
one-half broader than long, the sides slightly rounded, the surface 
impunctate, shining, pale fulvous, with some very obsolete irregular 
depressions at the sides; scutellum fulvous ; elytra of a dark bluish 
or slightly greenish colour, opaque, very minutely granulate, and 
closely and finely punctured ; under side dark metallic blue; tibize 
and tarsi closely pubescent, the first joint of the posterior tarsi as 
long as the following two joints together ; claws appendiculate. 
Hab. Cauca Valley and Amazons. 
I possess two specimens of this species, which may be 
principally known by the sculpture of the elytra. In 
general shape and colour the insect closely resembles 
several species of Cneorane amongst the Galerucine, 
from which the thickened posterior femora at once dis- 
tinguish it. 
Spheroderma bimaculata, n. sp. 
Black ; the thorax and elytra scarcely perceptibly punctured, the 
latter strongly rounded and convex, black; each with a round 
flavous spot at the base. Length, 1 line. 
Head impunctate, scarcely grooved between the eyes, the frontal 
tubercles and carina entirely indistinct ; palpi robust, the penulti- 
mate joint strongly thickened; antenne not extending much 
beyond the base of the elytra, black, the basal three or four joints 
obscure fulvous, the second joint thickened, short ; thorax more 
than twice as broad as long, the sides nearly straight, the anterior 
angles slightly oblique, the surface nearly impunctate, black ; 
elytra not perceptibly punctured, strongly convex, black, the middle 
of the base of each with a round flavous spot, their epipleure very 
broad ; posterior femora strongly incrassate, the tibia somewhat 
compressed and dilated, with a long and distinct spine; the first 
joint of the posterior tarsi as long as the two following joints 
together ; claws appendiculate; prosternum narrow and 
the metasternum with a horseshoe-shaped plate. 
Hab. Sumatra, 
