263 



examples is represented only by a scarcely elevated and very 

 short transverse carina and in successive developments becomes a 

 well elevated carina, then a carina so much elevated as to be a 

 strong tubercle, then a short horn, end eventually a fairly long 

 horn. After careful examination of this series I cannot find any 

 character to rely upon for regarding these forms as representing^ 

 more than one species — the sculpture of the surface {e.g.) being 

 identical in them all and agreeing with Harold's description. I 

 notice that the males differ from the females in the very evidently 

 less transverse form of their pygidium. 



C. ducalisj sp. nov. Fern. Oblonga ; sat convexa ; nitida ; 



nigra ; antennis ferrugineis ; capite antice undulatim 



ruguloso, postice sat manifeste punctulato, clypeo antice 



obtuse bidentato ; pronoto in disco vix manifeste (angulos 



anticos versus subfortiter) punctulato, puncturis sat magnis 



prope marginem basalem impresso, stria marginali trans 



apicem continua, carina sublaterali a fovea sublaterali 



oblique ad marginem lateralem ut C. glahricollis, Hope, 



producta; elytris sat profunde striatis, striis obsolete 



punctulatis (8* antice abbreviata, ^^ ante medium cum 



margine laterali confusa) ; pygidio convexo Isevi. Long , 



8il.; lat., 411. 



Larger than any of the three previously described Australian 



species. Differs inter alia from glahricollis, Hope, by the very 



much finer puncturation of its elytral striae ; from Baileyiy 



Blackb., by the emarginate front margin of its clypeus ; and 



from suboenea, Harold, by its non-metallic elytra, and by its 



pronotum punctured like that of glabricollis, and having the 



marginal stria continuous across its front (as in glahricollis). 



N. Queensland (Mr. Cowley). 



ONTHOPHAGUS. 



Australian species of this cosmopolitan and extremely plentiful 

 genus have been described under 105 names. Fourteen of them 

 have been set aside (and stand so in Masters' Catalogue) as 

 synonyms, but two of those fourteen (desectus, Macl., and 

 inerinis, Macl.) I believe to be good species, as indicated more 

 particularly below, the rest (so far as I have means of judging) 

 being rightly treated by Masters. There are, however, nine 

 names treated by Masters as valid (or published at a later date 

 than that of his Catalogue) (viz., quinquetuherculatus, Macl.; 

 Schmeltzi, Har.; devexus, Macl.; discolor, Hope ; decurio, Lansb.; 

 promptus, Har.; patruelis, Har.; Duhoidayi, Waterh.; and 

 hostilis, Har.) which appear to me to be more or less certainly 

 synonyms and on which notes will be found below. I also 

 suspect, — but am less confident, — that propinquus, Macl.; 



