BY REV. T. BLACKBURN. 185 



lato, lateribus sat fortiter arcuatis haud deplanatis, angulis 

 posticis rotundatis; scutello l;evi; elytris sub callum humera- 

 lem leviter depressis, pone basin transversim minus evidenter 

 impressis, crebrius subfortiter subseriatim (ad latera magis, 

 postice minus, fortiter) punctulatis, parte marginali modice 

 lata (hac postice oblique extus sat fortiter directa) a disco 

 sat distincta, calli humeralis margine interno a sutura quam 

 ab elytrorum margine laterali vix magis distanti; segmento 

 ventrali basali fere Ifevi. Long. 3^, lat. 2^ lines. 

 Much resembles the preceding species [P. simplex) but differs 

 by its considerably larger size, the infuscation of some of its 

 parts (especially a small spot on either side of the middle of the 

 prothorax), the e\idently more strongly rounded sides of the pro- 

 thorax, the elytral puncturation more evidently becoming coarser 

 towards the sides and finer towards the apex, the basal ventral 

 segment almost unpunctured, etc., etc. A specimen in the S. 

 Australian Museum has much more distinct blackish spots on its 

 elytra than any other example that I have seen. 

 Kangaroo Island; Mr. Tepper, &c. 



P. TETRASPILOTA, Chp. (a ar. diemeneiisis, Blackb.). 



The only variety I ha^-e seen of this species is a Tasmanian 

 example in the collection of Mr. Simson, of Launceston. As I 

 have not seen a typical example from Tasmania, it is possible that 

 further observation may show this to be a good species, but I do 

 not observe any structural divergence from the type in this 

 unique specimen. Its peculiarities consist in its prothorax 

 having a testaceous edging on either side and the red spots on its 

 elytra being (r/) a very small spot close to the scutellum and {b) 

 another spot very little larger close to the external limit of the 

 disc and a little behind its middle. 



P. LACIIESIS, Stal. 



Among a large number of examples of this species that I ha\'e 

 examined I do not find any notable variation except in the intei'- 

 mediate spots on the prothorax being sometimes united and the 



