173 



it— a fact which I overlooked when I described the species. 

 It would certainly be quite out of place in Group III., to 

 which it would have to be referred if the front outline of its 

 head were regarded as not trilobed. 



II. potens, Blackb., and its allies. The species of this 

 aggregate (of Group VII., having the antennal flabellum 

 black) are incapable of confusion with any other lleteronyces y 

 but are extremely closely allied, inter se, and variable — at any 

 rate in respect of colour and size. I believe that I have 

 before me at least six species of this aggregate, but three of 

 them are represented by very few specimens, few of which are 

 in satisfactory condition, and I do not feel justified in dealing 

 with them. The species which I have called potens is usually 

 named aphodioides, Blanch., but I think this a mistake, inas- 

 much as its general size is larger than that Blanchard at- 

 tributes to his species ; it is one of the most opaque of the 

 Heteronycf-s (Blanchard calls his species "subnitidus"), and 

 its dorsal puncturation is exceptionally lightly impressed 

 (Blanchard calls the pronotum and elytra of his species "pro- 

 funde punctata"). I have little doubt that the true II. apho- 

 dioides is a small Heteronyx, which I have seen only from 

 Sydney and the immediate suburbs, and which answers very 

 well indeed to Blanchard's description. The three species 

 characterized in the tabulation above are certainly all valid, 

 and can easily be recognized by the characters cited. Besides 

 these, I have before me two black specimens from Galston 

 closely allied to incultus, but of wider and more depressed 

 form, with the prothorax larger and more transverse ; three 

 specimens from Windsor possibly identical with the two from 

 Galston, but entirely of a bright ferruginous colour, though 

 apparently not immature, with only the antennal flabellum 

 black ; and a single specimen (in bad condition) from the 

 Tweed River, near potens, but likely to prove distinct when 

 a series of specimens in good condition can be examined. 

 II. sollicitus, sp. nov. Minus elongatus, postice sat dilatatus ; 

 minus nitidus ; ferrugineus vel obscure brunneus, anten- 

 nis palpisque sat pallidis ; supra pilis minus brevibus 

 adpressis nonnullisque erectis vestitus ; clypeo (hoc antice 

 late emarginato) fronteque sat sequaliter subrugulose 

 punctulatis, ut plana parum disparia visis ; labro clypei 

 planum superanti ; capite antice (a tergo oblique viso) 

 tripliciter convexo (parte mediana quam lateralium dimi- 

 dium angustiori) ; antennis 9-articulatis ; prothorace 

 quam longiori ut 9 ad 6 latiori, antice sat angustato, 

 supra sat crebre minus subtiliter punctulato (puncturis 

 circiter 24 in segmenti longitudine), lateribus (superne 

 visis) sat arcuatis, angulis anticis sat acutis sat productis 



