BY THE REV. T. BLACKBURN. 1265 



the posterior declivity of the elytra larger, more strongly defined, 

 and quite flat; the posterior declivous part of the elytra was 

 produced downwards beyond the level of the undersurface of the 

 body (as in the male) but the elytra were conjointly rounded or 

 perhaps somewhat angulated at the apex, not as in the male 

 separately mucronate at the extremity with the suture itself 

 produced as a small spine projecting into the triangular gap 

 between the apices of the elytra. It was superficially so distinct 

 from the male that its connection with it would probably not 

 have suggested itself if I had not taken the two specimens out of 

 similar burrows in the same piece of wood, but the two when 

 placed side by side agreed in many striking characters, having 

 identical antennas, and sculpture of all parts, together with the 

 somewhat unusual absence of a hooked spine on the front margin 

 of the prothorax, and the very unusual structure of the posterior 

 4 tarsi and production downwards of the apex of the elytra. 



S. Australia ; dug out of burrows in wood of a living tree at 

 Petersburg. 



Xylopertha vidua, sp.nov. 



Modice elongata ; sat nitida ; glabra ; picea, antennis palpisque 

 testaceis, pedibus rufescentibus ; capite sat elongato longitudinal- 

 iter sat crebre strigato, antennis prothorace vix brevioribus ; 

 prothorace elytrorum latitudine, quam longiori vix latiori, postice 

 sparsim conspicue subtilius punctulato, antice crebre fortiter 

 granulato-ruguloso, antice ad latera utrinque 3-spinoso (spina 

 antica alteris majori uncinata), basi quam margo anticus fere 

 duplo latiori ; elytris creberrime sat fortiter ruguloso-punctulatis, 

 inter sculpturam fortiter rugatis, postice minus abrupte declivibus, 

 parte declivi plana fere circulari, baud perspicue carina circum- 

 cincta, apice deorsum producta, sutura antice vix perspicue (in 

 parte declivi sat fortiter) cariniformi ; humeris Isevibus ; tarsis 

 posterioribus 4 gracilibus compressis, supra visis fere capilliformi- 

 bus : tibiis anticis subtus vix denticulatis. 



[Long. I5, lat. I line (vix). 



