174 



nearly so large an area as in glabricollis, the greater part of 

 that segment being occupied by a smooth gibbosity which is 

 altogether absent in glabricollis. The outline of the clypeus 

 has not the upturned margin that is present in glabricollis. 

 Although these additional particulars are not needed to dis- 

 tinguish the two species, for the clypeal distinction mentioned 

 in my description is quite sufficient, it is well doubtless that 

 my attention is drawn to the matter, as it cannot be denied 

 that I described C . Baileyi somewhat briefly, contenting myself 

 with the mention of characters that clearly distinguish that 

 species from those previously described in the genus. 



G. ducalis, too, is very satisfactorily distinct from glabri- 

 collis. Apart from its size and build, which are notably 

 larger and more massive than in any of the numerous speci- 

 mens before me of glabricollis, it is at once distinguishable 

 by the striae of its elytra being all but without puncturation 

 — those near the suture absolutely without — the lateral ones 

 bearing extremely small punctures. It may be added that 

 its pronotum is considerably less convex in the longitudinal 

 direction (i.e., viewed from the side) than is that of glabri- 

 collis. 



I have before me what is evidently the female of one of 

 the two Australian species of Coptodactyla described by Herr 

 Felsche in the memoir quoted above, but as their author doe* 

 not differentiate the females of the two, merely saying that 

 they are altogether similar, it is impossible to give a name 

 to my specimen. Is it not probable that the females referred 

 to represent only one of his species, and that the female of 

 the other remains undiscovered? 



SERICOIDES. 

 HETERONYCIDES. 



Heteronyx. 



A recent visit to the Macleay Museum in Sydney has 

 enabled me to supply information concerning two of the species 

 mentioned in Trans. Roy. Soc, S.A., 1910, p. 230, as requir- 

 ing further study. They are as follows : — 



H. scutatus, Macl. A member of Group VIII. In the 

 tabulation of that Group (Trans. Roy. Soc, S.A., 1910, p. 

 191) it stands beside flavus, Blackb., under "LL." line 8), and 

 can be distinguished from it thus: — 



M. Punctures of pronotum well defined 



and quite strongly impressed ... flavus, Blackb. 



MM. Punctures of pronotum extremely 



fine and faint, scarcely visible ... scutatus, Macl. 



