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the surface irregularly, remotely, but distinctly punctured, the sides with a deep 

 fovea, a short transverse depression is also visible near the anterior margin and at the 

 base; scutellum fulvous; elytra bright metallic blue or greenish, strongly punctured in 

 irregular double rows, the interstices also finely ]junctured, the lateral margin flattened, 

 strongly imnctured and of fulvous colour ; breast and legs fuhous, abdomen Ijlack. 



Hab. Humboldt Bay (New Guinea). 



This species can only be compared witii 0. sabaenea Jac, likewise from Xew 

 Guinea, to which it seems closely allied ; bat in that species the terminal joints of 

 the antennae are black, the thorax is much less transverse and the elytral punctuation 

 is fine, although also geminate; the tibiae and tarsi are also piceous in 0. suhaenea; 

 for all that it is possible that 0. hv/mholdti represents but a local variety of the 

 other species. 0. limhata Blanch, has entirely differently sculptured elytra. 



Oides dimidiaticornis sp. nov. 



Broadly ovate, fulvous, the intermediate joints of the antennae black, thora.x 

 transverse, finely punctured, the sides dilated, elytra dark bluish, transversely 

 depressed below the base, closely and finely punctured, the lateral margin obscure 

 fulvous. 



liength 4 lines. 



Head impunctate, fulvous, the frontal tubercles transverse, clypeus thickened, 

 transverse, flavous, terminal joints of the palpi dilated, antennae extending beyond 

 the middle of the elytra, the basal and terminal three joints flavous, the others black, 

 third joint very elongate, slightly longer than the fourth, the following joints one half 

 the length ; thorax more than twice as broad as long, the sides rounded, and widened 

 at the middle, the surface convex, flattened at the sides, finely and rather closely 

 punctured, the anterior margin deeply concave, the posterior one nearlv straight ; 

 .scutellum triangular, its apex pointed; elytra slightly widened towards the middle, 

 with a rather deep but naiTow transverse depression below the base and a broadlv 

 flattened lateral margin of fulvous colour, the rest of the surface dark liluish, closelv 

 and distinctly punctured, their epipleurae very broad and concave, continued below 

 the middle, the inner margin placed rather deejily inwards ; legs slender, tibiae 

 unarmed, the first joint of the posterior tarsi as long as the following two joints, claws 

 bifid ; the last abdominal segment of the male with an intermediate sulcate lobe of 

 transverse shape, the sides of the segment deeply incised. 



Hah. Celebes. 



Principally distinguished from other neai'ly similarly coloured species bj- the long 

 third joint and the colour of the antennae, and the deep depression of the eh'tra. also 

 by the shape of the thorax. 



Oides unifasciata sp. nov. 



Black, abdomen flavous, thorax finely and clo.sely punctured, elytra very finel v and 

 elosely punctured, reddish fulvous, a broad transverse band at the middle black. 



S. Metastemum nanowed and strongly produced in front, its ajiex truncate. 

 last abdominal segment with a transverse median lobe. 



Length 5 lines. 



Broadly ovate, convex, head black, impunctate, shining, clypeus strongly triangu- 

 larly raised, antennae not extending to the middle of the elytra, black, the third joint 

 slightly shorter than the fourth ; thorax about three times broader than long, 

 narrowed in front, the sides rounded at the base, the anterior angles distinct but not 



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