191 



large. Prothoracc moderately transverse, with dense punc- 

 tures. Elytra subcordate, subhumeral incurvature rather 

 ■slight; with rows of rather large but partially-concealed 

 punctures, in rather narrow striae; interstices wide, nowhere 

 ridged. Basal segment of abdomen obliquely flattened in 

 middle, apical with a wide shallow depression. Femora stout, 

 strongly dentate. Length, 5 mm. 



Hah. — Western Australia (Blackburn's collection). Type, 

 I. 1332. 



The largest of the genus as yet described. It seems 

 probable that I previously confused females of this species 

 with a male of "povphyreaS^) The three specimens now before 

 me, that I described as such, have the third, fifth, and seventh 

 interstices of elytra not conspicuously ridged, as in the male 

 of that species, but scarcely different to the others, so that 

 it is only on looking at them from in front that they can be 

 noticed to be at all elevated above the others, and they are 

 certainly not ridged. These females differ from the type 

 of the present species in having the rostrum longer, and de- 

 cidedly thinner and narrowed from insertion of antennas (these 

 distinctly nearer base than apex), with smaller and sparser 

 punctures, and abdomen with basal segment evenly convex. 

 Their golden (on one specimen golden-red) scales form spots 

 amongst the ochreous ones. The type is certainly not 

 povphyrea, however, as it is a male (the rostrum and abdomen 

 are conclusive of this), and it has the elytral interstices very 

 different to those of that species. Its claws are also unusually 

 small and close together, so that, from most directions, each 

 tarsus appears to be terminated by a single claw. 



DiETHUSA INERMIS, n. sp. 



S • Black, antennae, legs, and tip of rostrum reddish. 

 Densely clothed with more or less ochreous scales, varied with 

 spots of stramineous; under-surface and legs mostly with 

 whitish scales. 



Rostrum moderately long, almost parallel - sided to 

 insertion of antennae, thence somewhat narrowed to apex'; 

 basal half with coarse, partially-concealed punctures, and a 

 narrow median carina ; apical half with dense, clearly-defined 

 punctures. Scape inserted about two-fifths from apex of 

 rostrum, somewhat shorter than funicle; first joint of funicle 

 slightly longer than second. Prothorax moderately trans- 

 verse ; with dense punctures. Elytra subcordate, base strongly 

 trisinuate, basal half parallel-sided; with rows of oblong 



B)Proc. Linn. Soc, N.S.W., 1899. p. 252. 



