560 MB. M. JACOB! ON THE [May 18, 



a species of Dibolia. xA.inongst the genera with closed coxal 

 cavities, Dibolosoma may be known by the short and robust 

 antennte, the want of frontal tubercles, the supra-orbital groo\'es, 

 punctate-striate elytra, and other particulars. 



Platycepha, Baly, from Australia, seems closely allied, but has 

 all the tibife mucronate, still shorter antennae, and a tooth at the 

 posterior tibiae. 



Dibolosoma quadeipustulattjm, n. sp. 



Piceous ; antennae flavous, the eighth and ninth joints black ; 

 thorax finelv 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 

 with 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 (C'A. Alluaud). 



Ch^tocnema gahani, n. sp. 



Elongate, dark aeneous ; antennae as long as the body, fulvous, 

 stained with fuscous ; thorax finely and closely punctured and 

 granulate ; elytra moderately strongly punctate-striate, the inter- 

 stices flat, finely granulate ; tibiae and tarsi fulvous. 



Length \h 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; 

 antennae extending to the npex 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 



