412 Mr. J. S. Baly on neic Genera 



tibiis apice spina acuta armatis ; tarsorum posticorum articulo 

 basali sequentibus tribus longiori ; unguiculis appendiculatis. 

 Prosternum angustissimum, acetabulis anticis apertis. Abdomen 

 in foemina gravida valde exsertum. 



Type Prasyptera Wallacei. 



Closely allied to Astena ; separated from that genus by the 

 shorter third joint of the antennae. 



Prasyptera Wallacei. 



P. anguste oblonga, postice vix ampliata, fulva, nitida, oculis, an- 

 fcennis (articulis duobus ultirais basi albidis exceptis), scutello, 

 tibiis tarsisque nigris ; facie inferiore thoraceque rugoso-puncta- 

 tis ; elytris parce griseo pubescentibus, crebre punctatis, metal- 

 lico-viridibus. 



Long, 4 lin. 



Hah. New Guinea, Dorey. 



Head trigonate ; eyes large, prominent ; clypeus clothed 

 with coarse griseous hairs, rugose- punctate ; carma obsolete; 

 encarpse large, moderately thickened, contiguous ; vertex 

 smooth, impunctate; third joint of antenna3 nearly twice the 

 length of the second, scarcely half as long as the fourth. 

 Thorax more than twice as broad as long ; sides straight and 

 scarcely converging from the base to beyond the middle, 

 thence slightly rounded and converging to the apex, anterior 

 angles thickened, obtuse ; basal margin trisinuate ; upper 

 surface faintly excavated on either side, coarsely rugose. Scu- 

 tellum trigonate. Elytra much broader than the thorax, 

 coarsely and closely punctured, very sparingly clothed with 

 griseous hairs ; interspaces minutely punctured. 



Prasyptera distincta. 



P. anguste oblonga, postice vix ampliata, fulva, nitida, femoribus 

 posticis apice, tibiis, tarsis, abdominis segmentis macula utrinque, 

 pygidio apice scutelloque nigris aeneo vix tinctis ; capite nigro- 

 aeneo, antennis nigris, clypeo transverso-quadrato, rugoso, viridi- 

 aeneo ; tborace transverso, laevi, dorso transversim excavate ; 

 el}-tris rude et crebre punctatis, metaDico-olivaceis. 



Long. 4 lin. 



Hab. Wagiou. 



Vertex black, with a faint metallic-green tinge ; encarpse 

 thickened, subtrigonate, contiguous ; clypeus brassy green, 

 transverse- quadrate, rugose-punctate, plane, the carina en- 

 tirely obsolete ; antennae with the third joint scarcely twice 

 as long as the second, more than half the length of the fourth; 

 all the joints to the eighth black (the rest, in the only speci- 

 men known to me, are wanting). Thorax more than three 



