47 



ing the front face perpendicular, middle lobe of trilobed out- 

 line of head much narrower, form shorter and wider, dorsal 

 surface notably less nitid, prothorax more transverse, with 

 sides more rounded, elytra quite visibly striate, basal 

 two joints of hind tarsi scarcely different in length. It 

 is to be noted that the punctures of the pygidium are 

 very notably less close and less fine than those of the rest of 

 the dorsal surface. 



South Australia (Cleve) ; taken by my son, Mr. John S. 

 Blackburn. 



H. difficilis, sp. nov. Sat elongatus, postice vix dilatatus; 

 minus nitidus ; f errugineus ; supra pilis adpressis brevi- 

 bus vestitus; clypeo crebre subtilius ruguloso, antice 

 emarginato, oculos in exteriorem partem haud superanti; 

 labro clypei planum superanti; capite antice (a tergo 

 oblique viso) tripliciter convexo (parte mediana quam 

 laterales duplo angustiori) ; fronte subtilius sat crebre 

 punctulata ; hac clypeoque ut plana minus disparia visis ; 

 antennis 9-articulatis ; prothorace quam longiori ut 9 ad 

 5 latiori, antice modice angustato, supra crebre subtiliter 

 punctulato (puncturis circiter 35 in segmenti longitudine), 

 later ibus (superne visis) sat arcuatis, angulis anticis sat 

 acutis modice productis posticis (superne visis) obtusis, 

 basi leviter bisinuata, margine basali sat sequali ; elytris 

 confertim subtiliter punctulatis (trans elytron puncturis 

 circiter 50), obsolete substriatis; pygidio nitido piloso 

 sparsius punctulato ; coxis posticis quam metasternum 

 vix brevioribus quam segmentum ventrale 2 um multo 

 longioribus; tarsorum posticorum articulo basali quam 

 2 US multo (quam 3 US parum) breviori; unguiculis posticis 

 elongatis, appendiculatis, parte basali quam apicalis vix 

 longiori. Long., 5 1.; lat., 2f- 1. 



A member of my Group VIII. In the tabulation of 

 species of that group (Trans. Roy. Soc, S.A., 1910, pp. 187, 

 etc.) stands next to H. scalptus, Blackb. Compared with 

 scalptus the present species (which is really very close to it) is 

 notably smaller, with sides of prothorax more rounded, punc- 

 turation of pronotum and elytra distinctly a little less 

 extremely fine, pygidium much more nitid and considerably 

 less closely punctulate, etc. This insect is also near H. 

 tvaterhousei, Blackb., and H. johannis, Blackb., differing 

 from the former by, inter alia, its substriate elytra : from the 

 latter by, inter alia, very different colouring and conspicuously 

 convex subsutural interstice ; and from both by larger size 

 and narrower form. 



South Australia (Cleve) ; taken by Mr. J. S. Blackburn. 



