366 Records of the S.A. Museum 



Group 3, near 0. capella, although it is nearer to 0. erichsoni, I)ut the prothorax 

 lias the median ]n-ojections more divergent in th(> male, the punctures coarsely 

 rugose, the head with a strongly arched line between the eyes, and the clypeus 

 notched. The female differs from the male in having the carina between the eyes- 

 narrowly elevated and less curved, the space between it and the clypeal suture 

 with denser and larger punctures, the clypeus less notched, prothorax with 

 median projections replaced by a ridge (emarginate in its middle, somewhat as 

 on 0. pugnax), and the front tibiae much shorter. From the female of 0. 

 erichsoni it differs in the coarser prothoracic and cephalic punctures, and hy the 

 interocular ridge being less elevated in the middh*. It is ])robal)le that the type- 

 of mtegriceps (noted l)y Macleay as a male) is really a female of O. fissiceps. 



ONTHOPHAGUS CUNICULUS Macl. 



Plate ix, figs. 66, 67. 



The head and prothorax of this species are sometimes coppery-purple; the- 

 metallic part of the head usuallj' terminates at the clypeal suture in the female^ 

 slightly beyond it in the male. 



ONTHOPHAGUS CONSPICUUS Macl. 



Plate viii, figs. 38, 3'J. 



On an occasional specimen of this species the head and prothorax (except the 

 basal gutter) are of a bronzy-purple, and the elytra purplish-green. 



ONTHOPHAGUS NODULIFER Har. 



Plate viii. figs. 40, 41. 



The males of this species vary greatly in the processes of the head and 

 prothorax. The various forms before me are as follows: 



1. Cephalic horns thin, strongly curved, eacli distinctly longer than the 

 head is wide; clypeus almost CA'^enly arched in front, prothoracic protuberance 

 beginning as a median carina and projecting forwards over a medio-apical cavity. 

 Yar. divaricatus Macl. Gayndah (Queensland). 



2. As 1, but prothoracic protuberance considerably reduced in size and blunt- 

 The typical form. Rqckhampton (Queensland). 



3. Cephalic horns much shorter and stouter, scarcely one-third as long as the 

 head is wide; clypeus with two feeble projections in front; prothoracic protuber 

 ance an obtuse tubercle capping a slight hollow. Emerald (Queensland). 



4. As 3, but clypeus evenly arched except for a slight incurvature in middle. 

 Northern Queensland. 



