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obsolete hind ward and is very faint or albogether wanting on 

 nearly the hinder half of the dorsal surface. Apart from the 

 character just referred to, this insect is very close to 0. Cowleyi, 

 Blackb. The arched transverse carina of the pronotum is how- 

 ever less strongly arched, with its extremities further from each 

 other ; the extremities of the frontal lamina are (in all the 

 examples before me) much more strongly produced upward than 

 in 0. Cowleyi of same sex ; and the front tibiae of the male are 

 notably more slender and elongate, there being about nine 

 crenulations on the external outline above the uppermost of the 

 large teeth, while in 0. Cowleyi there are only six or seven. The 

 distance between the external tubercles of the pronotum is less 

 than the width of the head. 



0. quinque tuherculatus, Macl. Some years ago while staying 

 in Sydney I inspected the type of this insect, and made a note 

 against it in my Catalogue '■? = ai5rox', Har." I do not attach 

 much importance to this note inasmuch as it was probably not 

 founded on comparison with, but only on memory of, atrox ; 

 nevertheless I have little doubt from the description of 

 5-tuherculatus that it is identical with the insect that I believe 

 to be atrox^ because that is the only Onthopliagus (of this Group) 

 known to me as inhabiting Eastern Australia the stracture of 

 whose pronotum would be likely to suggest the name 

 o tuber cuiatus and because the description contains no mention 

 of any other character inconsistent with identity, unless it be 

 the expression " finely punctulate " applied to the insect in 

 general, which does not suit atrox except in respect of the elytra, 

 It must be noted however that Macleay is extremely vague in 

 describing the puncturation of the different parts of his 

 Onthophagi, not always referring to it at all and in other 

 instances only using the word "punctulate." At any rate if 

 S -tuber cuiatus is not atrox it is a species I have not seen, and I 

 have examined a large number of Onthophagi from Queensland 

 (its habitat). 



0. atrox, Har. From the above notes (on the preceding 

 species) the Onthophagus that I have called by this name will be 

 easily identified. It is the only one of this group known to me 

 having the retuse front of its pronotum pilose If my identifica- 

 tion is incorrect it can easily be corrected by anyone who can 

 examine the type of atrox. It can be regarded as having 5 

 tubercles placed in a transverse line along the summit of the 

 retuse front of the pronotum, inasmuch as each extremity of the 

 tran verse carina is slightly prominent in most examples and the 

 middle of the carina by a little stretch of imagination may be 

 counted as a somewhat bifid tubercle. The external tubercle on 

 either side is well defined. The interstices of the elytra are 



