OP AUSTRALIAN PHYTOPHAGOUS BEETLES. 465 



Vertex and front clothed with scattered whitish hairs, sparingly 

 but distinctly punctured, the latter impressed with a longitudi- 

 nal groove ; clypeus transverse, semilunate, its anterior margin 

 concave, its surface irregular, deeply but remotely punctured ; 

 eyes moderately distant, slightly notched ; antennse rather longer 

 than the head and thorax, five outer joints moderately dilated, not 

 longer than broad, black, the six lower ones obscure fulvous. 

 Thorax about twice as broad as long at the base ; sides rounded 

 and converging from base to apex, more quickly converging in 

 front; surface subremotely punctured, the punctures oblong, 

 coarse and strongly impressed on the sides, finer on the disk ; in- 

 terspaces near the lateral margin faintly strigose. Scutellum 

 ovate, its apex acute. Elytra oblong, strongly punctate-striate, 

 punctures oblong ; interspaces plane, slightly convex towards the 

 apex^ those on the outer side convex for their whole length. Body 

 beneath clothed with whitish hairs. 



DiTEOPiDUS cosTiPENNis. Brevitcr ovatus, niger, nitidus ; 

 labro antennarumque basi piceis ; thorace fortiter punctato, 

 interstitiis strigosis ; elytris infra basin transversim excavatis, sat 

 profunde punctato-striatis, interspatiis nitidis, pone medium obso- 

 lete transversim striolatis, convexis, ad apicem et ad marginem 

 exteriorem costatis. Long. 2 lin. 



Hah. Western Australia, Champion Bay. 



Head finely punctured, subopake, space between the eyes broad, 

 faintly impressed in the middle with a longitudinal groove ; six 

 lower joints of antennae obscure piceo-fulvous, the upper surface 

 of the basal joint, together with nearly the whole of the sixth, 

 stained with piceous, seventh to the eleventh black ; labrum and 

 mandibles piceous, base of the latter rufous. Thorax convex ; 

 sides rounded and converging from base to apex ; basal border 

 bisinuate on either side, basal lobe slightly reflexed, its extreme 

 apex narrowly but distinctly notched; upper surface convex, 

 impressed just in front of the basal lobe with a short transverse 

 excavation ; strongly and rather closely punctured, punctures 

 oblong, interspaces strigose ; strigse crowded at the sides, less 

 visible and sometimes nearly obsolete on the middle disk. Elytra 

 transversely excavated below the basilar space (the latter slightly 

 elevated), strongly and deeply punctate-striate, the striae sulcate ; 

 interspaces thickened, convex, costate towards the apex and on 

 the outer disk. 



