356 COLEOPTERA 



The ground-colour is deep castaneous, but it is densely covered with 

 fuscous matter, erect setae, and fine pale yellow scales, these give the 

 insect a variegated aspect, the pallid squamosity predominates on the 

 sides of the thorax and the scutellum, but is evenly distributed over the 

 elytra, especially behind the base ; the legs are variegated with the 

 castaneous ground-colour, infuscate patches, and greyish setse. 



Length, 2-2^ lines; breadth, 1-4— li. 



I found two examples adhering to the under-side of a log on Mount 

 Manaia, W'hangarei Harbour. 



646. P. volutitliorax, /i.s. Body oblong, elliptical, convex, 

 shining when denuded of its covering, piceous, the tibiae, tarsi, and 

 antennte obscure red. Anteniice pubescent, inserted in front of the eyes, 

 free, so that the whole of the basal joint is exposed, the third joint 

 nearly as long as but more slender than the first, eighth smaller than the 

 seventh, tenth large, transverse, eleventh large, rounded. 



Head with large punctiform impressions in front, its vertex covered 

 with small tubercular elevations. Prothorax with a transverse depression 

 on the middle and rather distantly and finely punctured ; its sides are 

 rounded, so that an evident gap is left between them and the shoulders 

 of the elytra ; the disc is convex, slopes laterally, and the sides being 

 greatly elevated and reflexed leave large channels. Scutellum sub- 

 triangular. Elytra sub-quadrate, convex, abruptly deflexed and nar- 

 rowed posteriorly, so that the apex is somewhat trigonal, the sides also 

 are deflexed ; they are most elevated behind, and therefore seem 

 depressed towards the base, their shoulders are prominent but not acute, 

 and a little reflexed, so that they form a compressed tubercle ; they 

 have interrupted rows of large punctures, and on each an oblique row of 

 tubercular elevations near the middle, with others behind ; they are 

 sparingly clothed with yellowish scales. The tibics bear externally a 

 row of coarse setce. 



Length, 2\ lines ; breadth, \\. 



I found one specimen adhering to the under side of a log on Mount 

 Manaia, Whangarei Harbour ; it was then covered with sappy matter 

 which concealed its sculpture. 



It exhibits the following structural characters :— 



Eyes sub-lunate, transverse ; last joint of the maxillary palpi short, 

 ovate, obtuse at apex ; antentice eleven-jointed, club tri-articulate, but 

 with the ninth joint rather small, though larger than the eighth, they are 

 as long as the head and thorax ; thorax transverse, apex sub-truncate, 

 base excised at each side, the sides rounded and rolled up, so that they 

 are a little more elevated than the disc ; tibue compressed, bi-spinose at 

 apex ; tarsi short, narrow, the apical joint of the two front pairs as long 

 as the four basal ones, of which the first is rather the longest, the 

 posterior four-jointed, the basal joint not quite as long as the last. 



I hope to find another specimen that I may make a more thorough 

 examination of the head with the view of making a new generic name 

 for the insect. 



