| OCR Text |
Show 560 MR. M. JACOBY ON T H E [May 18, a species of Dlbolla. Amongst the genera with closed coxal cavities, Dibolosoma may be known by the short and robust antennae, the want of frontal tubercles, the supra-orbital grooves, punctate-striate elytra, and other particulars. Platycepha, Baly, from Australia, seems closely allied, but has all the tibiae mucronate, still shorter antennae, and a tooth at the posterior tibiae. DIBOLOSOMA QUADRIPUSTULATUM, n. sp. Piceous; antennae flavous, the eighth and ninth joints black; thorax finely and closely punctured, opaque ; elytra as closely punctured, the sides with deep rows of punctures, the disc with two fulvous spots, one before, the other below the middle ; legs fulvous. Length 1 line. Head finely granulate, greenish piceous, with lateral deep oblique grooves, separating the clypeus ; the latter broad, with a few fine punctures ; palpi slender, flavous; antennae extending nearly to the middle of the elytra, flavous, the eighth and ninth joints black, the first and second joints thickened, the third and fourth equal, the following joints gradually but rather strongly thickened; thorax twice as broad as long, the sides rounded and rather strongly narrowed towards the apex ; posterior margin sinuate at the sides, rounded and slightly produced at the middle, the sides w ith a narrow reflexed margin; the surface everywhere finely and closely punctured, the punctures at the sides slightly larger, the interstices very finely granulate; elytra very nearly similarly sculptured, opaque, the punctures slightly arranged in rows, those at the sides forming three or four regular rows of deeper punctures; a rather broad space in front of the lateral margin impunctate ; a round large spot before the middle and a similar one near the apex, fulvous. Hab. Madagascar, Diego-Suarez (Ch. Alluaud). CHJETOCNEMA GAHANI, n. sp. Elongate, dark aeneous ; antennas as long as the body, fulvous, stained with fuscous; thorax finely and closely punctured and granulate ; elytra moderately strongly punctate-striate, the interstices flat, finely granulate ; tibiae and tarsi fulvous. Length 1^ line. Head finely and remotely punctured, minutely granulate, without frontal elevations or carina, the sides with a distinct oblique groove, the space in front of the eyes distinctly punctured; antennas extending to the apex of the elytra, fulvous, the upper joints stained with fuscous at the apex, basal joint thickened, second joint shorter than the third, this shorter than the fourth joint, the other joints slender and elongate ; thorax more than twice as broad as long, the sides nearly straight, scarcely narrowed anteriorly, the angles acute, the surface finely and closely punctured and minutely granulate ; the extreme basal margin with |
