HY TIIH l{KV. r. HLACKI5UKN. 83 



senilis likoly (yet iiicapablo of beiii;^ (Icliiiitcly csl.-iblislKMl l>y me) 

 that several already-named Chalcopteri appcrtiiin to it. 



Among tli(^ s|)eciuiens presenting the combination of characters 

 mcntionod above, I distinguish O. irblicolor by tiie following com- 

 bination :--ocular sulci of more perfectly (5ven form, and the refoic 

 more entirely devoid of any deepening in front sugg(;stive of a 

 fovea, general form robust and elongate oval (not very parallel), 

 })uncturation of i)i()thorax veiy sparse, elytra usually marked 

 with rather well-delined longitudinal stripes of grccMi, golden and 

 pui-ple, seriate punctures of elytra very unecpial in si/e (some of 

 the punctures in the series being much larger than others), s(^riat(', 

 puncturation in general rather coarse and not close (evidently, but 

 not very much less fine than in C. variabilis, lilessig), interstices 

 scarcely quite flat (at any rate in tlic^ male), very (iiieJy and lujt 

 closely (especially in the male) punctured. 



Closely allied to the above is a species wliioh seems to Ix! very 

 variabh^ and vc-ry widely distributed, and common in N. S. Wales, 

 and which J. take to be 0. vinosus, Pasc. 1 fi^'l some doubt as 

 to \vh(^ther it may not eventually prov(^ to be a form of (J. iridicolm\ 

 In what I take to be its typical form, tins ins(H;t is smaller, 

 narrower and more parallel than irldico/or, its (^l\tra iwo. not 

 striped with various colours, Imt tlu^ whoh^ U|>[)er snrfa,(;n a,|)p(!ars 

 to he of a uniform gre(Mi or reddish-coppery colour, ac(;ording to 

 tlu; point of view. TIm; ocular sulci have just the least indication 

 of an anterior dilatation (a very slight character, Iiowcvim), tlie 

 prothora.v is a little more closely punctured, tin; seriatim |»uiu;tuies 

 of the elytra an; a little finer, tlu; interstices are moi-e absolutely 

 Hat and mucli mori; stiongly puncl^ured (tlu; sculpture of the 

 (elytra is extremely lik(i that of variabifis, hlessig, but the scu-iato 

 punctures are a little less close, and the int,(M-stitial })unctures are 

 a litt.h; strong(>r). Tin; tarsal vestitun^ is not (|uit(^ so black, some 

 piccous or even reddish hairs being mingled among the hlack ones. 



Jf the form Just described were th(5 only oihj of this insect, it 

 would apj)ear to b(> cpiite distinct from 0. iridicolor, but ciihci- it 

 varies to an (ixtiMordinary (ixtent, or there are S(!veral very closely 

 allied S[)ecios between which I have failed to find any reliable 



