OF NEW ZEALAND. 11&3 



and diffused over nearly the whole surface of the wing-cases, so that 

 these become of a dark-brown colour, with one or two small paler 

 spaces over which the dark colour is not diffused. This variety is 

 not connected with the type by intermediate examples, and may be 

 styled var. D. It much resembles P. huttoni, but has the wing-cases 

 darker in colour, and with the alternate interstices more elevarteel- 

 behind, the sides of the body beneath infuscate, and the process of 

 the metasternum between the middle coxae broader. 



Chrosis. 



2012. C. impreSSa, >&* Robust, shining, black ; tibiae and 

 tarsi more or less ferruginous ; sparsely clothed with greyish hairs. 



Head almost triangularly impressed, with a few rather coarse 

 distant punctures. Thorax rather longer than broad, narrowed 

 towards the front, posterior angles divergent ; apex with a short 

 median and two wider sinuations, one towards each side, anterior 

 angles obtuse ; the sides in front depressed and a little uneven, 

 moderately punctured ; near each side behind the middle are two or 

 three transverse impressions with small corresponding notches or 

 indentations ; disc finely and remotely punctured. Elytra atte- 

 nuated posteriorly, apices obtusely rounded, not at all spinose ; dis- 

 tinctly striate, external striae more evidently punctured than those 

 near the suture ; interstices more or less convex, finely punctured 

 near the base, but becoming quite rugose a short distance from it. 



Prosternum finely and distantly punctated, its flanks more re- 

 motely, and with two or three impressions similar to those above. 

 Abdomen finely punctured ; coxal lamina with a small but distinct 

 indentation only. 



C. reversa is its nearest ally. 



Length, 7J ; breadth, 2 lines. 



Mount Arthur. Mr. G. V. Hudson ; one example. 



Exceolus. 



Nov. gen. 



Forehead horizontal, feebly emarginate in front, without distinct 

 margin in the middle, lateral margins oblique and slightly raised ; 

 it overhangs the extremely short, almost invisible, clypeus, which 

 cannot be seen unless looked at from the front. Ldbnuni well 

 developed, nearly vertical, with a deep basal suture. Antenna stout, 

 filiform, elongate ; implanted just below the sides of the forehead, 

 without well-marked cavities. Palpi short, terminal joint narrow, 

 subsecuriform. Eyes moderately large, not very prominent. Thorax 

 subquadrate, hind angles obtuse, hardly at all divergent, fitting into 

 a small cavity below the shoulder ; it is without distinct lateral 

 margins. Prosternum convex, with oblique sutures ; chin-piece 

 very broadly rounded in front, transversely impressed. Process of 

 prosternurn a little raised between the coxae ; the saltatorial mucro 

 deflexed, somewhat tapering, yet not at all slender. Mesosternal 

 cavity rather broad, of triangular form, the margins between the 



