108 Phytophaga Malayana. 



Hab. Sumatra; Pulo-Penang, collected by Mr. Lamb ; Malacca 

 (Mount Opiiir). 



Face coarsely but not closely punctured, separated from the 

 encarpae and epistome by a deep sutural groove, its anterior 

 margin obtusely angulate, sinuate on either side; its surface, 

 together with a triangular space above, depressed, coarsely 

 rugose-punctate ; epistome scarcely broader in front than long, 

 sides moderately converging backwards, rounded towards tlie 

 apex, the latter more or less depressed, broadly concave-emargi- 

 nate; surface closely punctured; encarpae broadly cultriform ; 

 surface smooth, impunctate, thickened and raised on the upper 

 portion into an ill-delined tuberosity ; antennae neai ly two-thirds 

 the length of the body in the $ , rather shorter in the ? , five upper 

 joints narrowly dilated, seventh joint rather narrower than the 

 eighth. Thorax distinctly broader than long : sides nearly straight 

 and parallel from the base nearly to the middle, thence oblitiuely 

 rounded and converging to the apex ; anterior angles tl)ickened, 

 posterior armed with a short tunercle ; above transversely convex, 

 sides strongly and obliquely deflexed in front, surface deeply but 

 remotely punctured. Elytra broadly oblong, convex, deeply im- 

 pressed below the basilar space and within the humeral callus, the 

 latter prominent; surface finely punctured, the punctures arranged 

 in uneven longitudinal rows ; in the $ , placed within and parallel 

 to the lateral border, is a strongly raised costa, which, coumnenc- 

 ing just below the humeral callus, extends the whole length of the 

 elytron to the sutural margin, and between this costa and the outer 

 border is a slightly raised Hexuose vitta. 



The deep depression surrounding the outer and lower edges of 

 the basilar space separates C. approxlmans from its allies. The ? 

 of C. costalus (post, p. 110), which possesses the same character 

 in a less degree, may be known from the $ of the present 

 species by the close irregidar punctation of the elytra, together 

 with the much more strongly raised costa on the outer disk. 



10. Corynodes cvpreus, Baly, 

 Platycorynus cupreus, Kaly, Desc. New Gen. and Spec. Phyt. p. 6. 

 Oblongo-ovatus, valde convexus, subtus purpureo-metallicus, 

 supra nitido-cupreus, anguste purpureo- aut viridi-lim- 

 batus; thorace transverso, subcrebre punctato ; elytris infra 

 b.isin vix transversim excavatis, intra marginem exteriorem 

 unicostatis, seriatim pimctatis, striis confuse gemellato-dis- 

 positis, punctis disci antici infra humeros inordinatim dispo- 

 sitis, interspatiis nonnullis prope apicem subelevatis; antennis 



