Lea — Australian Dung Beetles 387 



hut sliallow, siibvermiciilate punctures; suture carinated on sides, but obliterated 

 in middle. Eyes large, facets incoiispicuous. Prothorax large, sides strongly 

 dilated in middle, then narrowed to apex, but with a sinuous outline, lateral 

 margins and gutters comparatively wide, apical ones narrower, base almost 

 immarginate, front angles obtusely produced, middle feebly produced ; remnants 

 of median line faintly visible; sides and apex with small, obsolete punctures, very 

 minute ones elsewhere. P^lytra with narrow, geminate striae, containing narroAV, 

 transverse, distant punctures; interstices shagreened, opaque, not separately 

 convex, and with very minute punctures. Metasternum with dense, asperate, 

 piliferous punctures on sides, running out at middle of apex, base with somewhat 

 similar ones, middle shining and with minute punctures. Abdomen with apical 

 segment strongly narrowed in middle ; pygidium with numerous rather small 

 punctures. Front tibiae elongate. Length, 10-10-5 mm. 



9 Differs in having the interocular ridge interrupted for a short distance 

 only in middle, clypeus slightly notched in front, rather coarsely vermiculate, 

 suture carinated across middle, prothorax cA^enly convex across apex, apical 

 segment of abdomen not narrowed in middle, and front tibiae somewhat shorter. 



Hah. Queensland: Bowen (Aug. Simson). Type, I. 15422. 



With the general appearance of 0. gldbratus, 0. murchisoni, and large 0. 

 gueenslandicus, but readily distinguished therefrom by the interocular ridge and 

 sides of prothorax ; it is perhaps nearest of all to 0. pronus, some specimens of 

 which have the interocular ridge interrupted in the middle; it resembles several 

 species of Macropocopris, but the claws are normal. On the female the clypeal 

 suture is conspicuously carinated throughout, but each of the side parts, where 

 it joins the median part, is attached to a carina that passes the front of an eye 

 to join the outer end of the broken interocular ridge ; on the male, owing to the 

 absence of the median portion, the lateral parts appear to be suddenly directed 

 baclavards to the ends of the broken ridge, (^n both sexes the sides of the 

 prothorax are not evenlj- rounded to the apex from their widest part, but have 

 a slight (although quite distinct) incurvature between it and the apex; the front 

 of the prothorax of the male could scarcely be regarded as refuse, but from 

 behind it appears widelj^ bisinuate. 



ONTHOPHAGUS OPACIPENNIS sp. nov. 



Plate vii, fig. 30. 



6 Black, antennae, palpi, and tarsi reddish. Under-surface and legs with 

 long rusty-red hair. 



Head large ; interocular ridge semicircularly arched forwards, each end 

 elevated into a rather long and almost upright thin horn ; behind the ridge concave 



