319 



Table of species known to me: — 



A. Derm black. 



a. Head with a short longitudinal carina. 



b. Third joint of antennae longer than fourth suturalis 

 bb. Third joint shorter than fourth ... ... niger 



aa. Head not longitudinally carinate. 



c. Pronotum with minute, ill-defined punc- 



tures on disc ... ... ... ... parvoniger 



re. Pronotum with larger, sharply-defined 



punctures ... ... ... ... ... cavinatifrons 



AA. Derm more or less eastaneous. 



B. Fourth and fifth joints of antennae com- 

 bined no longer than sixth, if as long parvulus 

 BB. Fourth and fifth joints combined longer 

 than sixth. 

 C. Derm of pronotum opaque ... ... subopacus 



CC. Derm of pronotum shining. 



D. Eleventh joint of antennae just per- 

 ceptibly longer than tenth ... ... orthodoxus 



DD. Eleventh joint conspicuously longer 

 than tenth. 

 E. Widest part of prothorax not the 

 extreme base. 

 d. Prothorax with a feeble median 



line, but traceable throughout norfolcensis 

 dd. Prothorax without such a line ... howensis 

 EE. Widest part of prothorax the 

 extreme base. 

 F. Elytra somewhat darker than pro- 

 thorax ... ... ... ... interruptus 



FF. Elytra no darker than prothorax. 



6. Comparatively large and robust majorinus 

 GG. Smaller and thinner. 



H. Basal joint of hind tarsi 

 longer than the rest com- 

 bined ... ... ... talayroides 



HH. Basal joint shorter than the 



rest combined ... ... castanevs 



Dystrigonisthis paradoxus, Blackb. 



The type of this species was from North Queensland 

 (probably from Cairns). There are four specimens from 

 Cairns, nine from New South Wales (Forest Reefs), and 

 three from South Australia (Mount Lofty and Adelaide), 

 that appear to belong to the species. They vary in length 

 from 5 to 10 mm. (the type was about 7 mm). Their elytral 

 striae are peculiar ; at the greatest width (just above the 

 metasternum) each has eleven, of these the tenth vanishes 

 level with the apex of the first abdominal segment, the ninth 

 and eighth meet near the apex, and then, as one, deepens and 

 continues till it joins the first, the second and third vanish 

 at about one-fourth from the apex, the fifth and sixth become 

 conjoined and terminate nearer the apex, and the fourth and 

 seventh become conjoined and terminate still nearer the apex. 



