Lea — Australian Dung Beetles 373 



females, tAvo large ones have the prothoracic tubercles as large as on the males, 

 although more obtuse, five small ones have them smaller and more obtvise; the 

 large females also have the interocular elevations longer and more acute than on 

 the males, the median one appearing as a short horn about half the length of the 

 clypeus. The two large females have the appearance, in comparison with all the 

 others, of being males, but the shape of the apical segment of the abdomen 

 renders it certain that they are females, and that the two smaller ones are males. 

 The elytra are somewhat as on 0. viacrocephalus, 0. decUvls, and 0. schmeltzi, 

 but the head and prothorax are very different from those of those species, or of 

 any other before me. 



ONTHOPHAGUS ANCHOMMATUS sp. nov. 

 Plate ix, fig. 72. 



S Black, shining, parts of head and of legs obscurely reddish, antennae, 

 palpi and tarsi paler, club and several of the preceding joints flavous. Under- 

 snrface and legs with hairs varj'ing from almost white to rusty-red. 



Head with rather sparse but sharply defined punctures on basal half, inter- 

 ocular ridge narrowly elevated in middle, each side elevated into a rather wide 

 subtriangular horn. Clypeus with suture strongly trisinuate, the median sinus 

 strongly carinated, arched forwards, and wider than the others combined, sides 

 in front of suture subparallel for a short distance, then strongly incurved to 

 apex, which is gently rounded and strongly elevated ; punctures rather sparse in 

 middle and more numerous on sides. Eyes very narrow and with distinct facets. 

 Prothorax slightly wider than elytra, a wide median process, widely triangular 

 in front, overhanging head, a vague median line on basal half; apex and sides 

 narrowly margined, base depressed and immarginate; punctures dense, rather 

 large, and sharply defined, densest of all on apex of process. Elytra Avith narrow 

 striae, interstices moderately convex and with fairly large sharpl.y defined punc- 

 tures, denser on sides than elsewhere. Metasternum with fairly large and dense 

 punctures on sides, becoming sparser and mixed with small ones in middle. 

 Apical segment of abdomen very narrow in middle ; pygidium with large, crowded 

 punctures. Length, 7 -5-8 -5 mm. 



9 Differs in having the head smaller, the interocular ridge with a wide 

 triangular elevation in middle, as well as with short lateral horns; clypeus 

 smaller, apex less strongly upturned (although more strongly than is usual in 

 females of the genus), with dense punctures, mostl.y transversely confluent (or 

 vermiculate) ; prothorax with median process almost straight in front, not over- 

 hanging head, and narrowed to its base, apical segment of abdomen scarcely 

 narroAved in middle, and front tibiae shorter and wider with wider teeth. 



