319 



with dense punctures. Elytra subcordate, base strongly tri- 

 sinuate; with rows of suboblong punctures, in narrow, deep 

 striae; interstices rather wide, nowhere ridged. Basal seg- 

 ment of ahdnmeu obliquely flattened in middle; apical 

 segment with a wide, shallow impression. Feviora ratlier 

 stout, hind ones moderately, the others very feebly, dentate ; 

 front tibiae bicalcarate at apex, hind pair with apical hook 

 dentate. Length, 3 J mm. 



Hah. — Victoria (National Museum). 



The clothing is denser and less decumbent than in other 

 species of the genus. The front tibiae are moderately curved 

 at apex, and the apex itself is bicalcarate; the spurs are of 

 uneven size, but start from a common base. The spur of the 

 hind tibiae has a distinct triangular tooth, that from some 

 directions appears to be almost as large as the spur itself. 

 The teeth of the four front femora are invisible from most 

 directions. The t3^pe is probably a male. 



DiETHUSA SULFUREA, n. sp. 



Keddish-castaneous. Densely clothed with sulphur- 

 ^coloured scales, in places with a golden-lustre : paler (but 

 .scarcely white) on under-surface and legs. 



Rostrum not very long, parallel-sided to insertion of 

 antennae, thence narrowed to apex; with dense punctures 

 concealed near base. Scape stout, inserted two-fifths from 

 apex of rostrum, distinctly shorter than funicle; first joint 

 of funicle as long as second and third combined, third to 

 seventh transverse. Protliorax moderately transverse, punc- 

 tures normally quite concealed. Elytra subcordate, base 

 moderately trisinuate; with rows of partially-concealed 

 punctures, in narrow striae; interstices irregular, but no- 

 where ridged. Basal segment of ahdovien gently concave in 

 middle; apical with a wide impression. Femora moderately 

 stout, edentate; tibiae with apical spurs minute. Length, 

 3^ mm.. 



Hah. — Queensland: Cunnamulla (H. Hardcastle). 



Keadily distinguished from others of the genus by the 

 inequalities of the elytra and the sulphur-coloured clothing. 

 The elytra are nowhere supplied with distinct tubercles, but 

 have numerous slight swellings, giving the surface an uneven 

 appearance; the second interstice is rather suddenly dilated 

 about the base, the third is narrowest at the base, and widest 

 close to same. The punctures in the striae are probably of 

 fairly large size, although appearing rather small; but the 

 species being a very distinct one, and the type unique, the 

 4erm has not been abraded to expose their full size. 



