551 



Hab. — South Australia: Murray Kiver (F. R. Zietz), 

 Mount Lofty (S. H. Curnow). Type, I. 7850. 



In Blackburn's table would be associated with pallidas, 

 to which in fact it is closely allied, but it differs in having 

 elytra longer, with the geminate-striae less pronounced, 

 prothorax with smaller punctures and without a median line; 

 in general appearance it is strikingly close to arid us (of Group 

 4), but the front tibiae are bidentate instead of tridentate; 

 at first glance it resembles many of the small pale species of 

 Heteronyx. The upper-surface and hind parts have a more 

 or less conspicuous pruinose gloss ; the setae across the apex 

 of the pronotum are fairly distinct on some specimens, but 

 from others they appear to be absent, on many specimens the 

 pronotum is of the same shade of colour as the head. I can 

 find no conspicuous sexual differences, although Mr. Zietz 

 took specimens in abundance. 



LlPARETRUS UNIDENTATUS, 11. Sp. 



Flavous ; head (somewhat darker between eyes) and parts 

 of legs flavo-castaneous. Sterna moderately pilose, abdomen 

 with sparser and stiffer clothing, upper-surface glabrous except 

 for a fringe on each side of pronotum, hind parts with short, 

 erect, and moderately dense, but (except from the sides) 

 inconspicuous setae. 



Head with small dense punctures, becoming crowded in 

 front, somewhat larger and sparser on clypeus ; clypeus short, 

 sides oblique, apex wide and truncated, but with angles 

 rounded off. Antennae nine- jointed. Prothorax with 

 moderately rounded sides, hind angles widely rounded off, 

 the front ones produced and acute, median line lightly 

 impressed; punctures rather small and dense on sides, becom- 

 ing somewhat sparser in middle. Elytra with rather small 

 and fairly numerous punctures; geminate-striae conspicuous; 

 without apical membrane. Hind parts with rather dense and 

 small subasperate punctures. Front tibiae with a strong apical 

 tooth only ; basal joint of hind tarsi distinctly longer than 

 second. Length, 6 J mm. 



Hab. — Queensland: Hughendon (A. M. Lea). Type 

 (unique), I. 7851. 



In Blackburn's table would be associated with modeztas, 

 which is a much smaller, wider, and otherwise different species ; 

 disregarding the hind tarsi it would be associated with 

 brer i pes and blanch ardi, also very much smaller and otherwise 

 different species ; in general appearance it is strikingly close 

 to aridus, pallidas, and fiavits, but is readily distinguished 

 by the unidentate front tibiae. On the type there is a small 



