Lea — Australian Dung Beetles 379 



9 Differs in lujving' the interocular ridgo ev(Mi less distinct, prothorax 

 smaller, less convex in front, and without trace of a median line except at 

 extreme base, and ajncal segment of abdomen less narrowed in middle. 



Ilah. Western Australia: Geraldton (J. Clark). Type, I. 15415. 



With the general appearance of 0. hldclnvoodemis and 0. pontilis, but head 

 of male unarmed, 0. ineornutus has very different punctures on prothorax and 

 elytra, etc.; 0. macleaiji, which is similarly coloured, is larger and with the 

 sculpture of head and elytra different. The bronzy gloss is very faint on the 

 elytra, and on tAvo females the gloss there is slightly greenish. Each of the five 

 specimens before me has distinct markings at the apex of elytra ; on two of these 

 the base is immaculate, on two (one of each sex) there is a spot inwards of each 

 shoulder, and on the other (a small female) there is an obscure spot at the base 

 of most of the interstices. 



ONTHOPHAGUS CRIBRICOLLIS sp. nov. 



Plate ix, fig. 77. 



S Black, palpi and parts of tarsi reddish, antennae flavous, head (except 

 clypeus and elevated parts, which are bronzy) and prothorax dark metallic 

 green. Under-surface and legs sparsely hairy. 



Head with dense, moderately large and sharply defined punctures, becoming 

 tran.sversely confluent or vermiculate on clypeus; interocular ridge wide, acute 

 and even on top, but the sides abrupt, punctures behind ridge sparser than 

 elsewhere ; sides conspicuously angulate. Clypeus with oblic(ue slightly elevated 

 sides, apex strongly elevated and slightly notched, suture carinated throughout, 

 median two-thirds almost straight. Eyes narrow, with distinct facets. Pro- 

 thorax large, sides strongly rounded, front angles rather acute and produced 

 slightly outwards, margins rather narroAv throughout, with four ol)tuse elevations 

 across middle about one-fourth from apex; punctures large and crowded, but 

 nearly all round and sharply defined. Elytra with narrow striae containing 

 distant transverse punctures, interstices shagreened and opaque, with small 

 subobsolete punctures, becoming more distinct on sides. Metasternum with rather 

 small and irregularly distributed punctures. Abdomen with apical segment 

 strongly narrowed to middle. Front tibiae elongate. Length, 8 mm. 



Hah. Northern Territory : Daly River (H. Wesselman). Type, l. 15419. 



Apparently nearer to 0. conspicuus than to any other species, but the opaque 

 black elytra and coarse punctures of prothorax and head should be distinctive, 

 even if the prothoracic tubercles should be variable, as they certainly are on that 

 species. T know of no Australian species (except several of the 0. peiifacdnthus 

 group, in which in ]iarts they are larger) with coarser punctures on the pro- 



