BY REV. T. BLACKBURN. 241 



the vittae (except the marginal one) are wanting, in the second 

 they are all interrupted except the marginal one, the third has 

 four entire vittse as stated in the desci'iption. The underside 

 varies from testaceous to piceous. The species is very close to 

 nigerrima, Germ., but in the latter the legs seem to be invariably 

 black, and I have not seen any variety of it coloured as the 

 present species on the upper surface. 



P. GEMINA, Chp. 



This is another extremely variable species. It is common in 

 the neighbourhood of Adelaide. The dark marks on the prothorax 

 vary from a good-sized blotch on either side of the disc through 

 various forms having the intermediate space more or less filled in 

 with dark clouds and blotches till in the extreme form the whole 

 space between the foveate impressions is black. The elytra in 

 lightly coloured examples have ten black strife (much like those 

 of intacta, but) more or less faint or abbreviated in the neighbour- 

 hood of the humeral callus, and vary through forms in which the 

 black of some of the external striai becomes dilated till it even 

 fills up the whole width of some of the interstices in a more or 

 less blotchy manner, to the extreme form known to me, in which 

 the alternate interstices are entirely black. This extreme form 

 resembles the var. altemata of nigerrima, from which, however, 

 it is quite distinct by the considerably coarser punctures of its 

 elytral series, as well as by the evident strim in which the elytral 

 series are placed and the very marked convexity of the interstices 

 in the female. 



P. INTACTA, Newm. {polyglyfta, Germ.; Froggatti, Blackb.) 



In Trans. Roy. Soc. S.A. I expressed the opinion that P. poly- 

 gjypta. Germ., is distinct from intacta, Newm., and described 

 under the name Froggatti another form (from the Australian 

 Alps) as an allied new species. A careful consideration of the 

 long series of Paropses now before me compels me to abandon the 

 opinion that the above names represent distinct species, as I find 

 that the three forms are connected by intermediate varieties. 



