BY TflE REV. T. BLACKBURN. 437 



Besides the differences specified above, this species difters from 

 all the examples known to me of C. placidus in colour, the pro- 

 thorax being black with a faint coppery tone, and the elytra of aj 

 uniform reddish-copper colour with the suture greenish in certain 

 lights, whereas in all the specimens of C. placidus I have seen the 

 whole upper surface is blue or green, changing from certain points 

 of view to pui'ple or golden. The form of the prothorax is very 

 like that of C. fastuosus, Germ., (but with the crowded lateral 

 puncturation wanting). The prothorax being much less rapidly 

 narrowed forward than that of C. placidus appears conspicuously 

 more massive. 



N. S. Wales ; taken near Maitland by Mr. Froggatt and 

 generously presented to me. 



C. PURPUREUS, Germ. 



C. versicolori valde affinis ; difFert forma angustiori, capite 



baud (vel vix) metallico-micanti, pi'othorace magis nitido, 



elytris perspicue (nee profunde) striatis, interstitiis leviter 



convexis. [Long. 4^-6^, lat. 24-34 lines. 



The species forming the group to which this and C. versicolor 



belong are extremely closely allied inter se, and it is possible that 



they ought to be considered local races of a single type. The 



differences, however, such as they are, seem to be constant. I 



found G. versicolor plentifully (though I was able to take only a 



short series) on young shoots of Euccdyptus in the far North 



(basin of Lake Eyre), and all the specimens of it that I have 



examined seem to be quite identical, being oval in form, with the 



prothorax a little less nitid than the elytra, the head of a bright 



green colour, and the elytra, when carefully examined, not in the 



least striate, although the closeness of the seriate punctures in 



the rows makes them seem to a casual glance finely striate, with 



the interstices perfectly flat. C. pu7'pureus is widely distributed 



and not uncommon in the southern part of S. Australia. It is a 



distinctly narrower and more elongate species with the head 



black or faintly tinged with copper colour, the prothorax very 



nitid and the elytra distinctly though finely striate, with their 



