223 



In the tabulation (Trans. Roy. Soc, S.A., 1908, p. 384) 

 this species must stand beside spretus, Blackb., from which it 

 differs by, inter alia plurima, the (well defined) costae on its 

 elytra. 



Western Australia; Mount Barker (Mr. Lea). 



Group III. 



H. aspericollis, Blackb. This species was accidentally 

 omitted when Group III. was revised by me in Trans. Roy. 

 Soc, S.A., 1909. In my former Revision of Heteronyx the 

 species was placed in Group VI. (corresponding in general to 

 Group VII. of the present memoir), but cannot stand in 

 Group VII. as now characterized, on account of the middle 

 lobe of the trilobed outline of the head not being convex, but 

 of the same peculiar form as that of the species which I believe 

 to be H. granum, Burm., i.e., bisinuate with its ends angular. 

 In the tabulation of Group III. (loc. clt., pp. 21-24) asperi- 

 collis must stand beside granum from which it differs by, 

 inter alia, the dark flabellum of its antennae and the hind 

 coxae longer than the 2nd ventral segment. It also differs in 

 colouring. I have before me a fairly numerous series of both 

 species, and lind that while the pronotum of granum is invari- 

 ably testaceous-red in colour, that of aspericollis is invariably 

 black, although its elytra vary in colour from red to black 

 with an intermediate form having the suture (only) black. 



II. granum, Burm. It seems desirable to call attention 

 here to the note in my former Revision on the difficulty of iden- 

 tifying this species (Proc. Linn. Soc, N.S.W., 1889, p. 1235). 

 As Burmeister did not describe the claws of H . granum confi- 

 dent identification is impossible. The species to which I have 

 assigned the name is variable in colour, the elytra being much 

 darker in some specimens than in others. It is found in 

 Victoria as well as in South Australia. 



II. alienus, Blackb. This species was accidentally over- 

 looked when Group III. was revised in Trans. Roy. Soc, 

 S.A., 1909. Its proper place in the tabulation is in the 

 aggregate GG on page 24, line 4. It differs from both the 

 other species in that aggregate by its clypeus very distinctly 

 -emarginate in front — as in H . cequalice.ps, Blackb. — (very much 

 less strongly than in II. obesus, Burm.), by its much smaller 

 size, its pronotum and elytra much more coarsely and less 

 closely punctured, etc, etc. In the tabulation' it should 

 follow H . Callabonncc, Blackb., thus: — 



HHH. Clypeus very conspicuously emar- 

 ginate in front alienus, Blackh. 



