Lea — Australian Dung Beetles 381 



as on 0. mutatus, but the space between' them is conspicuously concave, and the 

 elytral punctures are very different. On the male there are some obscurely 

 reddish spots on the base, apex, and sides of the elytra, on the female on the apex 

 only. The elytral punctures in places appear to be in irregular double rows, 

 elsewhere in single rows, many of them have a granulated appearance, and each 

 contains a seta; although the surface is not distinctly wrinkled it is slightly 

 rugose, more noticeably on the female than on the male. The front tibiae do not 

 appear to difiPer in the sexes. 



ONTHOPHAGUS MICROTRICHIUS sp. nov. 



S Black, shining, palpi and legs more or less reddish, antennae flavous. 

 Under-surface and legs with sparse hair and short setae; elytra and sides of 

 prothorax with sparse pubescence, or short depressed setae. 



Head flat and almost impunctate between eyes, then with rather small 

 sharply defined punctures to clypeal suture. Cl.ypeus short, sides feebly elevated, 

 more strongly so and almost truncated in front, with denser and larger punctures 

 than on rest of head, and in places feebly confluent ; suture strongly elevated and 

 carinated in middle, its sides somewhat oblique and narrowly impressed. Eyes 

 narrow, Avith distinct facets. Prothorax slightly wider than head, front 

 angles obtusely produced, sides moderately margined, apex and base feebly so, 

 the margin vanishing in middle of base ; apical fifth or sixth vertical in middle, 

 with two small, flat prominences above; median line shallow about base, and 

 traceable to middle; punctures of moderate size, sharply defined and numerous, 

 but not crowded, very small on refuse portion. Elytra with narrow, sub- 

 geminate striae, containing distinct punctures ; interstices separately convex, 

 with numerous somewhat rugose but sharply defined punctures, and in places 

 briefly obliquely strigose. Metasternum opaque and Avith asperate punctures on 

 sides, shining' and with small punctures in middle. Apical segment of abdomen 

 strongly narrowed in middle. Front tibiae rather long. Length, 6-7 mm. 



5 Differs in having a feeble bilobed elevation between the eyes, clypeus 

 moderately notched in front, its suture less elevated in middle; prothorax smaller, 

 not. vertical in front, without medio-apical prominences; apical segment of 

 abdomen scarcely" narrowed in middle, and front tibiae shorter. 



Hub. Queensland: Cape York (H. Elgner), Cairns (E. Allen). Type, 

 L 3783. 



The general outlines are somewhat suggestive of 0. macleayi, 0. qneens- 

 la)idicus, and 0. comperei, but the head is very different. The prothorax of the 

 male, as seen from behind, appears to have the whole apex trisinuate, the 

 median sinus smaller than the others. On several females the sides of the clypeus 

 are obscurely reddish. 



