Coleoptera from New Zealand. 201 



Psilodontria viridescensj sp. n. 



Shining^ smooth, pale green ; legs and antennae infuscate, 

 club black. 



Head smooth behind the median suture, distantly but 

 distinctly punctured in front. Thorax about a third broader 

 than long, rather more narrowed in front than it is behind, 

 the sides near the middle obtusely angulate ; anterior angles 

 blunt and less depressed than in Pyronota^ and the base less 

 sinuate ; posterior angles rectangular or nearly so ; near each 

 side there are a few fine punctures, but the disk appears to be 

 impunctate. Elytra oblong, striate, the striae with rather 

 fine punctures ; interstices broad, only slightly convex, with 

 some minute punctures, and appearing feebly rugose. Tarsi 

 (anterior) inserted in line with the apex of the second tooth ; 

 the spine on the inside of the tibia but little developed ; 

 middle and hind tibia? asperate, bearing coarse grey setae and 

 armed with distinct spines at the inner extremity. 



The pubescence is variable. The forehead bears some fine 

 erect hairs ; there are others along the sides of the body, and, 

 in some cases, a few scattered quite indistinct ones may be 

 noticed on the elytra. 



Underside fuscous, shining, sparingly punctate, with 

 numerous elongate grey sette. 



$ . Antennw and tarsi shorter ; legs not so stout. 

 Var. — Thorax feebly rufescent ; the legs, antennae, and 

 palpi rufo-testaceous ; the sides of the thorax not angulate. 

 ^ . Length 3, breadth 1^ line. 



Ashburton. Mr. W. W. Smith, to whom we are indebted 

 for the discovery of this species, informs me that he found 

 three males and a female under stones near a creek which 

 flows towards the centre of the broad river-basin. 



Ohs. — Pyronota. On examining two species {P. festiva, 

 Fabr., and P. lugubris, Sharp) I found that Hope's diagnosis 

 is incorrect. He describes the antennse as nine-jointed ; in 

 reality their structure is as follows : — 



yln^e/mce 8-articulate 5 first joint clavate at apex, second 

 about half as long as first, third and fourth cylindric (the 

 latter the shorter), fifth short -, club triarticulate. 



PcEClLODiSCUS, gen. nov. 



Allied to Stethaspis. The sternal process is horizontal, 

 but does not extend forwards beyond the intermediate coxse ; 

 in front it is vertical. The posterior coxce differ from those of 



