250 



thorax nt tlie base is strongly bisinuate, is nearly twice as 

 wide as it is long down the middle and a little more than half 

 again as wide as its front margin ; its sides are arcuately nar- 

 rowed from the base to the apex ; its surface is rather strongly 

 convex both longitudinally and transversely, and (as in 

 i\r. discoflava) is coarsely and rather closely, but not deeply, 

 punctured. The elytra are very little convex and are rather 

 finely and rather sparingly punctured, the punctures ranning 

 in the anterior half entirely in transverse wrinkles and becom- 

 ing ver}' faint towards the apex ; the transverse depression 

 immediately behind the base is wide, strong, and conspicuous, 

 and there are indications of impressions, or unevenness, about 

 the middle. The puncturation of the underside is coarse but 

 shallow, close on the sides, and sparse in the middle. 



The unicolorous bluish-black tint of this species would place 

 it in M. Fairmaire's first division of the genus, but its real 

 affinity is certainly with X. discoflava, Fortnumi, &c. 



There is a single specimen in the South Australian Museum 



taken almost certainly in South Australia. 



N. inihescens, sp. nov. Convexiuscula ; minus parallela ; nigra, 



obscure coeruleo-tincta ; capillis sat longis albidis vestita ; 



fortiter punctulata ; elytris vix inaequalibus. Long. 2 1. 



Lat. f 1. 



The uniform blackish colour is only slightly tinged with blue ; 

 the shape resembles that of N. monocliroma, Eairm., the pro- 

 thorax, however, being more convex longitudinally. The head 

 is feebly channelled and is covered rather closely with very 

 large and very deep punctures. The prothorax is sculptured 

 a little less coarsely than the head ; it is at the base slightly 

 more than half again as wide as down the middle it is long, 

 and only about a quarter as wide again as its front margin ; it 

 is slightly and arcuately contracted from the base to the apex. 

 The elytra are gently contracted from the base hindward ; 

 their puncturation is close and strong, but not nearly so 

 strong as that of the prothorax ; in front and laterally the 

 puncturation has only a moderate tendency to run in trans- 

 verse wrinkles. The erect, rather long, and moderately close 

 hairs which clothe the whole u^^per and under surface dis- 

 tinguish the species from all others yet described in the genus. 



The sculpture of the underside is coarse. 



A single specimen occurred to me on a flowering Eucali/ptus 

 about 20 miles north of Port Lincoln. 



ETHOX. 



U. Qiiaculatus, sp. nov. Latus, antice posticeque angustatus ; 

 supra nigro-seneus, albido-maculatus, minus nitidus ; 

 subtus £eneo-micans, ad latera albido-pubescens ; antennis 



