370 Records of the S.A. Museum 



ONTHOPHAGUS TAMWORTHI Blackb. 



Of this species two specimens, sexes, were known to Blackburn. The male is 

 now in the British Museum, but the female is before me; they were both badly 

 abraded and dull, and were described as "supra, glahfr .... minus nitidus, 

 coriaceus." Two specimens from Collarenebri (New South Wales) quite 

 evidently belong to the species : they have the prothorax shining and the upper- 

 surface conspicuously clothed ; on the prothorax the hairs are erect, fairly dense, 

 and in parts almost as long as the distance between the cephalic carinae, but they 

 are absent from the slightly depressed median space; there are fairly numerous 

 hairs on the head, except liehind the interocular ridge (the ridge on the male, 

 as viewed from behind, appears to be moderately arched forwards, and rather 

 acutely and evenly elevated) ; on the elytra the hairs are sparser and less erect,, 

 and from behind appear in two regular rows on each interstice. The male, from 

 Collarenebri, is 6 mm., the female 5 mm. ; the female has an obscure purplish gloss,^ 

 instead of an obscure greenish one. 



ONTHOPHAGUS LEAI Blackb. 



Plate vii, figs. 28, 29. 



The interocular ridge on this species varies considerably ; it is usually about 

 two or three times as wide as high, with the top even, but the middle of the ridge 

 is often triangularly elevated ; on one specimen from Bathurst (New South 

 Wales) the ridge is much higher than usual, with its summit conspicuously trifid. 

 The prothoracic horns project forward much as on 0. ferox, but are wider 

 and flatter. Specimens are often attracted to lights. 



ONTHOPHAGUS COMPEREI Blackb. 



Plate viii, figs. 53-56. 

 The cephalic horns on the males of this species vary considerably in size : on 

 some they are subconical, rather short, and almost simple ; on one specimen they 

 are long, curve inwards at the summit, and are slighth' dentate, both internally 

 and externally. 



ONTHOPHAGUS HOPLOCERUS sp. nov. 



Plate viii, figs. 57, 58. 



$ Black, antennae and tarsi reddish, clul) paler, lender-surface and legs 

 with rusty-red hairs. 



Head wide, sides behind clypeal suture slightly dilated, and then strongly 

 narrowed to base ; two rather narrow and almost vertical horns between eyes,. 



