327 



Sevoral Queensland spécimens hâve tlie scutelliim and side pièces 

 oi Ihe mesosternuMi cobered witli a pini<isli mealy exudation 

 (traces of Ihis pink meal are also on other parts of tiieir bodies) 

 and the clothing of Ihe legs of a very pale grey, alnnost white. 



The intermediate costue are not suddenly terininated, but marge 

 gradually iiito the head. The sublateral sulci are nai-row and closed 

 posteriorly. The scrobe runs to the eye and then narrows and runs 

 alongside it till it vanishes at the middie of the upper surface of 

 that organ, but its upper porlion is sometinies choked with scales. 

 It is exactly alike in the ty{)ical form and in ail the varieties. The 

 third interstice of the elytra is usually costate from the base to near 

 the middie, but this costa is often broken up into tubercles, 

 especially in the maie ; in one small iemale before me it is costate 

 for one third of the length of the elytra on one side, and tuber- 

 culate from the base on the other. The suture near the summit of 

 the posterior declivity is supplied with two conjoined tubercles, 

 in some spécimens thèse are conjoined almost throughout, but 

 usually only at the base. The apex of the elytra is distmctly notched. 

 The prothoracie impression also varies in extent, is often more 

 distinct tow^ards the apex than towards the base, but is often 

 narrow and distinctly impressed throughout its length. 



Hah. : Queensland, N. S. Wales, Victoria, S. Australia, Tas- 

 mania (1). 



Var, interioris Blackb. 



This is a variety having the tubercles rather less pronounced 

 than usual. In comparing it with tribulus, Blackburn stated that it 

 diflered from that species « by its much less robust of less convex 

 form, the long slender antenucC, the smallness of the tubercles in 

 the seventh elytral insterstice, the almost complète disappearance 

 of the tubercles on the front of the prosternum (which are not at 

 ail pointed forward), its rostrum not at ail concave, even at the 

 apex, etc. » 



I hâve from South Australia five spécimens of this variety, of thèse 

 one was given to we with the name by M. Blackburn, and a second 

 was received from M. Griffith and marked as having been named 

 by M. Blackburn; they also agrée with the description. The 

 antennse of a typical spécimen from Sydney measuring one inch 

 in length, ai'e 3 3/4 lines long; exactly the saine as a South Austra- 

 lian spécimen of the variety measuring one inch, nor can I see that 

 the latters are at ail thinner (2). In the maie the tubercles of the 



(1) It is the only species known to me from Tasiuania. 



(2) Iq some specimeus of the variety, however, tliey are certaialy thiuner 

 aud lonerer than in others. 



