110 MARTIN -JACOBY 
the base, the surface with a very deep transverse fovea at each 
side, black, shining; elytra with a slight depression below the 
base, not visibly punctured, even when seen under a strong 
lens; tibiae unarmed; claws appendiculate; anterior coxal ca- 
vities closed. 
Hab. Borneo, Sarawak (Doria and Beccari). 
This is evidently a very variable species and it is probable 
that specimens occur in which the elytra are entirely black or 
piceous; the abdomen seems however to be constantly black; 
there is a great difference in the structure of the antennae in 
the male and female insect, the latter at first sight, seeming to 
represent another species, the head is also less transverse and 
the thoracic groove is not interrupted at the middle. 
99. Aenidea metallica, n. sp. 
Metallic green or bluish; lower part of the face, the antennae 
and legs fulvous; thorax bifoveolate, impunctate; elytra very 
closely and irregularly punctured. 
Length 3 lines. : 
9. Head impunctate, metallic green at the vertex; lower 
portion flavous or fulvous the middle stained more or less with 
metallic green; the space between the antennae raised into an 
acutely shaped ridge, extending to the lower edge of the clypeus; 
antennae fulvous, the second joint very short, the third and 
fourth joints equal; thorax scarcely broader than long, the 
sides nearly straight, slightly rounded before the middle, the 
surface with two round foveas, the interior of which is furnished 
with a few punctures, the rest of the surface entirely impunctate; 
elytra very closely and distinctly punctured with traces of lon- 
gitudinal striae ; underside metallic bluish; legs fulvous; tibiae 
unarmed; the first joint of the posterior tarsi as long as the 
two following joints together; claws appendiculate; anterior 
coxal cavities closed. 
Hab. Borneo, Sarawak (Doria and Beccari). 
I know apparently the female only of this species which 
