186 
MR. J. S. BALT ON SOME GENERA 
the' fifth shorter than either of the preceding two, broader than 
long, trigonate, its antero-external angle slightly produced, 
acute. Thorax more than one half as broad again as long; sides 
nearly straight and diverging from the base to beyond the 
middle, thence obliquely converging towards the apex ; disk 
deeply transversely sulcate immediately behind the middle, the 
sulcation more deeply impressed on each side, abbreviated just 
within the lateral margin ; surface very finely and remotely 
punctured, the punctures more crowded on the sides in front. 
Elytra oblong, dilated posteriorly ; convex, transversely excavated 
below the basilar space, finely punctured. 
The abdomen of the in the only specimen known to me is 
not fully developed ; I am therefore unable to give the form of 
the median lobe of the anal segment of the abdomen. 
Genus Leptoxena. 
Corpus angustum, elongatum, eonvexum. Caput exsertum ; antennis 
filiformibus, extrorsum leviter incrassatis et paullo compressis ; 
oculis integris ; palpis maxillaribus ovatis, articulo ultimo acuto. 
Thorax transversus, transversim convexus. Elytra subcylindriea; 
epipleuris a basi ad angulum posticum extensis. Pedes robusti ; 
tibiis inermibus ; unguiculis bifidis, dente interim breviore ; femoribus 
tibiisque posticis in <3 incrassatis; tarsis posticis articulo basali ad 
duos sequentes fere sequilongo. Prosternum basi non lobatum ; 
acetabulis anticis fere clausis, epimeris anticis cum antepectoris mar- 
gine postico intime connexis. 
Leptoxena is allied to Galerucella, but may* be separated from 
that genus by its narrower form, thickened hinder legs in 
the <3 , and by the anterior epimera being continuous with the 
hinder border of the antepectus for their whole length, whereas 
in Galerucella their apices are free. 
Leptoxena eximea. Auguste elongata, parallela, transversim con- 
vexa, fusco-fulva, subnitida, thoracis punctis duobus, antennis (basi 
exceptis) abdomineque nigris ; thorace transverso, lateribus late rotun- 
datis, antice siuuatis ; disco nitido, leviter transversim convexo, 
utrinque leviter excavato ; elytris fere parallelis, subcylindricis, infra 
basin non excavatis, fortiter et irregulariter punctatis, vittis non- 
nullis, leviter elevatis instructis, interstitiis reticulatis. Long. 
5 lin. 
