642 COLEOPTERA 



are obovate, their sculpture consists of excessively fine, almost imper- 

 ceptible, rows of punctures with a minute hair proceeding from each, 

 they are broader than the thorax, and proportionally longer. 



The insect is of a pitchy-brown coloiir, moderately shining, with dark 

 chestnut-red legs, the three apical joints of the antennae are red, the 

 others blackish. 



The anterior tibia in the typical species are somewhat bent, but in 

 the present one they are straight. 



Length, 2 lines ; breadth, nearly i. 



I found my specimen near Whangarei Harbour. 



Triplax. 



Paykull; Lacord. Hist, des Ins. Coleop., Tom. xii.,/. 40. 



Head rather wide, short ; epistome not separated from the forehead, 

 indistinctly emarginated ; labrubi short, ciliated ; mandibles arched, the 

 extremity bidentate, membraneous on the inner side ; lobes of t\\ejaws 

 subequal in length, ciliated, the internal acuminate, the external almost 

 trigonal ; first joint of the maxillary /#//>/ slender, arched, notably longer 

 than the following two conjointly, these latter obconical, the fourth 

 transversal, of variable form, triangular, securiform, or in the segment 

 of a circle ; mentum tricuspidate in front, the median point forming the 

 extremity of a curvilinear triangle on a plane external to the lateral 

 parts ; ligula oblong, entire, furnished with small but distinct paraglossse; 

 first joint of the labial palpi slender, second shorter, third transversal, 

 securiform, more or less dilated ; eyes sub-globular, finely granulated. 

 Antenna rather robust, attaining the base of the pronotum ; first joint 

 stout, sub-cylindrical ; joints two to eight sub-oblong or moniliform, the 

 second often a little longer than third ; joints nine to eleven dilated, 

 forming a compressed club, pubescent, more or less elongate and 

 perfoliate. Prothorax quadrangular, lateral margins almost straight, 

 the posterior a little lobed in the middle. Scutellum transversal, 

 curvilinearly triangular. Elytra oblong or oblong oval, parallel or 

 almost narrowed behind, a little convex. Prosternum regularly convex, 

 truncated behind ; mesosternum transversely quadrate ; metathoracic 

 parapleurcz parallel. Legs short, rather robust ; femora incrassated, 

 almost canaliculate underneath ; the tibia a little, or sensibly, widened 

 near the extremity, almost prismatic, ciliated ; tarsi rather wide, the 

 three basal joints pubescent below, subequal, fourth rudimentary, 

 fifth longer than the preceding joints taken together, armed with 

 simple claws. 



1124. T. brounii,/^*?,- Ann. Mag. Nat. Hist.Jany., 1876, /. 60. 

 T. obovata, fusco-castanea, nitida, antennis pedibusque ferrugineis, illis 

 articulo ultimo apice obliquo, palpis maxillaribus articulo ultimo valde 

 transverso; capite prothoraceque subtiliter, elytris fere obsolete punctatis; 

 tibiis modice triangularibus ; prosterno postice paulo bilobo. 



Long., if lin. 



Auckland. 



