BY THE REV. T. BLACKBURN. 103 



The punctures in the elytral striae appear under a lens of a 

 golden colour. The markings on the elytra consist of a dark spot 

 on either side of the suture about its middle, and a smaller one on 

 either side of the suture close to the apex. Apart from colour, 

 this species differs from //. Bakeivelli, Pasc, chiefly by the sides of 

 the prothorax being perfectly straight in their hinder part (im- 

 mediately in front of the hind angles), and by the humeral angles 

 being much less rounded off. The former of these characters 

 distinguishes it still more strongly from the two species described 

 above. 



W. Australia. 



Nyctozoilus, Sloanei, sp.nov. 



Convexus ; late ovatus ; niger, supra opacus sparsim subtilissinie 



(nisi sub lente forti hand manifesto) punctulatus ; prothorace 



qnam longiori fere duplo (postice quam antice circiter dimidia 



parte) latiori, Hyiyocilibis prothoracem simulanti, latera versus 



sat depresso et in margine ipso sat incrassato, latitudine 



majori pone medium posita ; elytris ad latera distincte 



anguste explanatis et margine reflexo instructis (parum aliter 



ac Pterohelcei hullati, Pasc), costis obsoletis 3 (sutura exclusa) 



et inter has nonnuUis intermediis magis etiam obsoletis 



ornatis, strigis transversis (nee costis) sat manifesto certo 



adspectu impressis. [Lo"g- 9-10, lat. r)l-6 lines. 



This species must certainly, I think, be attributed to Nyctozoilus, 



although in some of its characters (notably the shape and sculpture 



of its prothorax) it agrees better with Hypocilihe. The absence 



of a defined gular sulcus and of a defined tooth on thesubmentum 



are quite inconsistent with a place in the latter genus, but on the 



other hand the fi'ont margin of the submentum is considerably 



thickened, and the strong tooth on the submentum of Hypocilihe, 



is represented by a distinctly prominent angulation. Mr. Bates 



mentions as a generic character of Hypocilihe that the prosternal 



process is bilobed behind ; in this present insect the process is not 



bilobed, but I do not regard that as a reliable character, inasmuch 



