374 Records of the S.A. Museum 



Hah. Queensland: Brisbane, in November and January (H. Hacker). 

 Type, in Queensland Museum ; cotype, I. 15400, in South Australian Museum. 



An isolated species, at first glance approaching 0. Jatro, but head and 

 prothorax very different. The clypeus of the male is so strongly elevated in 

 front than if the elevated part Avere bent backwards it would touch the middle of 

 the suture. The cotype male has the medio-apical process of the ])rotliorax 

 intermediate in shape between that of the type male and its female. 



ONTHOPHAGUS TRICAVICOLLIS sp. nov. 



Plate ix, figs. 73, 74. 



$ Black, shining; head, except clypeus, and prothorax, except projecting 

 parts, coppery-green ; antennae, palpi, and tarsi obscurely reddish ; club and some 

 of the preceding joints flavous. Under-surface and legs with more or less rusty- 

 red hair. 



Head rather large, sides angularly dilated in middle, between clypeal suture 

 and interocular ridge, with small and sparse, but sharply defined jnuictures, 

 becoming larger on sides, behind the ridge almost impunctate; ridge narrow, near' 

 each eye briefly subtriangularly elevated. Clypeus with suture carinated and 

 very feebly sinuous, sides strongly obliquely narrowed to apex, Avhich is strongly 

 elevated and almost truncated ; with sparse and minute punctures in middle, 

 becoming larger and more numerous but not dense on sides. Eyes rather narrow 

 and with distinct facets. Prothorax large, distinctly wider than head : a 

 large trilobed mass in front, the lobes rounded on their upper parts, almost 

 vertical in front, and not at all greenish ; a large excavation between them and 

 each side, the excavation with an overhanging subconical tubercle near the lateral 

 fovea, which opens in front into the excavation ; front angles distinctly produced 

 but truncated ; sides narrowly margined and with a narrow gutter, base almost 

 immarginate ; median line very feeble ; with fairly numerous and rather feeble 

 punctures, more sharply defined about the lateral foveae than elsewhere, and 

 absent from most of the excavated parts. Elytra with narrow striae, interstices 

 moderately convex, with fairly luimerous and small but distinct punctures. 

 Metasternum opaque and with fairly dense punctures, except in middle, which is 

 shining and with a few large and some very small ones. Three apical segments 

 of abdomen narrowed in middle ; pygidium subopaque and with irregular ])unc- 

 tures. Front tibiae long. Length, 9-12 mm. 



9 Differs in having the head smaller, less dilated in middle, interocular 

 ridge evenly elevated throughout, many distinct but small punctures behind it, 

 clypeus smaller, less elevated in front, and closely transversely vermiculate; 

 prothorax with four small dark tubercles at summit of the frontal slope, the two 



