BY THE REV. T. BLACKBURN. 251 



a small batch of pupae that he obtained at the root of a tree. The 

 principal differences are in the male being an unusually depressed 

 Diaphonia, while the female is a very convex one, and in the male 

 elytra being bright testaceous with the suture more or less widely 

 blackish (the blackish vitta thus formed being dilated in a curve, 

 or sending out a short curved branch on either side a liitle in 

 front of the apex), while the elytra of the female are black with 

 a more or less short testaceous vitta running fiom the middle of 

 the base hiadward. It should be noted that the upper surface of 

 the hind body is testaceous in both sexes and that its testaceous 

 colour is continued in some examples on to the edges of the 

 ventral segments, also that I hav^e seen one male in which there 

 are two testaceous spots on tht^ clypeus. 



The sculpture and pubescence of this insect are almost exactly 

 as in D. donialis, Don., and its male bears a good deal of resem- 

 blance to the male of dorsalis in general appearance. It is, 

 however, more depressed, with its prothorax considerably more 

 transverse and its elytra of different shape, being considerably 

 narrowed hind ward from immediately behind the base. The 

 sutural stria does not (as it does in dorsalis) commence on the 

 base of the elytra and follow the outline of the scutellum, but 

 commences immediately behind the scutellum. The suture is 

 very decidedly, though not very strongly, carinate, but is not at 

 all protuberant at the apex. The mesosternal process is a little 

 longer and more prominent than in dorsalis, with its sides more 

 parallel. The antennal club is much shorter. The clypeus is 

 scarcely different except in being more closely punctulate. The 

 mesothoracic ejnmera are less conspicuous from above. The 

 humeral lobes are a little less prominent. Besides the above 

 specified distinctions from dorsalis, the dark markings of the 

 upper surface are very different, that of the prothorax being much 

 larger and differently shaped, the sutural vitta of the elytra being 

 prolonged to the apex, &c., and the shoulders being devoid of a 

 dark spot ; also the tibiae are differently dentate. 



S. Australia ; Port Lincoln ; York's Peninsula, &lq. 



