Coleoptera from Africa and Madagascar. 193 
insect from its other African allies. The variety does 
not differ except in the entirely dark blue colour. 
Colasposoma humerale, n. 8. 
Metallic green or blue; antenne and legs testaceous, the 7th 
and 8th joints of the former fuscous; thorax very closely and 
finely punctured; elytra closely and more strongly punctured, the 
shoulders prominent and smooth, bounded by a deep transverse 
depression. Length, 24 lines. 
Head closely and finely punctured, strigose at the vertex, the 
lower part separated from the front by a shallow sinuate groove ; 
the clypeus punctured and strigose at the base; labrum piceous ; 
palpi fulvous; antennz long and slender, testaceous, the seventh 
and eighth and the apical joint fuscous, the third very long and 
slender; thorax more than twice as broad as long, the sides nearly 
straight, the entire surface covered with very fine, closely 
approached, and partly oblong punctures, not stronger at the sides 
than at the disc ; elytra closely and much more strongly punctured, 
the entire humeral callus prominent and swollen, bounded within 
and below by a deep depression, which in the green specimens is 
of a metallic-blue colour; the sutural and lateral margins are also 
narrowly metallic-blue; legs testaceous ; abdomen piceous. 
Hab. Madagascar (my collection). 
Principally distinguished by the colour of the antennez 
and legs, and the prominent shoulders in connection 
with the fine and evenly punctured thorax. 
Chrysomela (Polysticta) madagascariensis, n. 8. 
(PT. VIL... figs. 0, Ga). 
Broadly rounded, very convex, black; thorax very transverse, 
piceous; elytra obscure testaceous, closely punctate-striate. Length, 
4 lines. 
Head flattened, scarcely visibly punctate, nearly black ; antenne 
scarcely extending beyond the base of the thorax, black, the five 
last joints gradually transversely widened; thorax at least three 
times broader than long, the sides narrowed towards the apex, 
slightly rounded, the anterior margin deeply concave, the sides 
with some rather strong punctures, the middle of the disc 
impunctate, brownish piceous; scutellum triangular, smooth, 
Piceous; elytra very convex towards the middle, deflexed from 
there to the apex, where they are gradually narrowed, obscure 
fulvous or testaceous, impressed with closely approached rows of 
distinct punctures, which somewhat approach in pairs towards the 
