336 Mr. M. Jacoby^s contributions to the knowledge of 
depressions closely punctured ; scutellum dark blue ; elytra 
narrowly parallel, closely rugose-punctate, metallic-green, their 
epipleurae purplish, the punctures interrupted by four narrow 
smooth longitudinal costae, separated at equal distances ; underside 
metallic-blue, femora fulvous, the lower part of the tibiae and the 
tarsi black, the first joint of the posterior tarsi as long as the 
following two joints together. 
Hah. Tabora, Africa. 
Of this species, not difficult to recognize, I possess 
two apparently female specimens. The other sex is 
unknown to me^ and may possibly be without elytral 
costse. 
Platyxantha cliscoidalisj sp. n. 
Fulvous, thorax transverse, impunctate, transversely sulcate, 
elytra extremely finely and sparingly punctured, fulvous, the disc 
greenish- black. Length, 2^ lines. 
Head impunctate, reddish-fulvous, frontal elevations broadly 
transverse, clypeus acutely triangularly raised, palpi robust, the 
terminal joint very short and conical ; antennae extending to two- 
thirds the length of the elytra, pale fulvous, the first joint 
elongate, the second one short, the third and fourth equal, as long 
as the first joint, following joints shorter ; thorax twice as broad 
as long, slightly narrowed at the base, the sides rounded before 
the middle, the angles slightly thickened, not produced, the disc 
with two scarcely interrupted shallow sulcations, minutely granu- 
late and scarcely perceptibly punctured, reddish-fulvous ; scutellum 
fulvous, trigonate, impunctate ; elytra with the basal portion 
distinctly raised, the shoulders rather prominent, the surface 
minutely granulate, very sparingly and finely punctured, the base 
and the apex reddish fulvous, the middle of the disc occupied by 
a broad greenish- black band ; epipleurae broad, extending to the 
apex, legs unarmed, fulvous like the undersurface ; the first joint 
of the posterior tarsi as long as the following two joints together, 
claws appendiculate, anterior cotyloid cavities closed. 
Hah. Sierra Leone. 
Of this species, two specimens are contained in my 
collection ; one, a male, has the intermediate joints of the 
antennae very robust, but the terminal ones are wanting ; 
the last abdominal segment has the usaal lateral in- 
cisions j the other specimen has thinner antennae, and is 
a female. The species is smaller than most of its 
congeners. 
