63 NOTES ON AUSTRALIAN COLEOPTERA, 



From S. Australia I have three examples, all taken near Port 

 Lincoln. In these the anterior elytral spot is prolonged forward 

 still more widely and conspicuously than in the Victorian form, one 

 of them even having nearly the whole basal margin filled by it. 

 These S. Australian specimens, moreover, have the front margin 

 of the prothorax more or less distinctly straighter than in the 

 Tasmanian and Victorian forms, in consequence of which the front 

 angles of the prothorax are more defined, being obtuse but not 

 altogether rounded oif. This form might perhaps be conveniently 

 named, thus : — 



T. pacifica, Er., var. lindensis; prothoracis angulis anticis minus 

 rotundatis ; elytrorum plaga anterior! antrorsuni usque ad 

 basin late producta. 



From W. Australia 1 possess a single specimen which may 

 possibly represent a separate species, though I fail to detect any 

 good distinction except in respect of characters that in the forms 

 alluded to above certainly appear to be liable to slight variation. 

 Compared with T. pacifica this insect has a slightly shorter pro- 

 thorax, but I can find no other structural difference. The 

 anterior elytral spot is quite as in pacifica, but the hinder spot is 

 as in T. flavofasciata, Chaud., i.e., is a fascia occupying the entire 

 apex of the elytra and is of even width, but zigzagged on its 

 anterior margin. I think it must be regarded with hesitation as 

 a var. of T. pacifica. It may be thus characterised : — 



T. pacifica, Er., var, (?) occidentalis ; differt prothorace paullo 

 breviori, elytrorum macula postica fasciam formanti apicem 

 totam complenti, antice dentata. 



I may add that the variations mentioned above are undoubtedly 

 not sexual characters ; nevertheless, as I have not seen both sexes 

 of all the forms alluded to, there remains a possibility that an 

 examination of these might reveal specific characters. 



Of the other described species of the genus T. lineata, Dej., is 

 very different from all the above mentioned forms ; T. dimidiata, 

 Chaud., I have not seen, but it is evidently a very distinct form • 

 T. plagiata, Germ., is identical with lineata, Dej.; T. fiavofasciata. 



