1G8 Mr. R. E. Turner on the 



a'. Sciitelluni and postscutelliim markeil 

 with yellow, ventral segments 2 and 



3 banded with yellow C. subopacn. 



A'. Thorax and ventral segments entirely 



black C. gracilis, Sauss. 



6*. Six basal segments at least banded 

 with yellow, 

 fl^. Clypeus entirely yellow. 



a*. Seventh segment banded with 



yellow C. rndiila, Fabr. 



64. Seventh segment black entirely . . C. carinifrons, 

 P, Clypeus yellow with a small black 

 spot in the middle ; seventh segment 

 entirely black C. formosa, Gu(5r. 



Genus LiACOS, Guer. 

 Subgenus Diliacos, Sauss. et Sichel. 



Liacos I'nsuJaris, Sm. 



Scolia tnsularis, Sm. Journ. Proc. Linn. Soc, Zool. iii. p. 153 

 (1858), d. 



Hah. Mackay, Q. ; Cairns, Q. 



Female specimens from Queensland are a little more 

 sparsely punctured on the thorax than Ke specimens, b.it 

 otherwise do not differ. Males from the two localities show 

 no difference. The species also ranges into the Solomon 

 Islands, specimens from that locality having been recorded 

 by Kirby as Diliacos duhia, Sm. Tiie latter species described 

 by Smith from Ceram does not appear to differ sufficiently 

 from insularis, if Kirby 's identification of the female is correct. 



Genus Scolia, Fabr. 



Subgenus Triscolia, Sauss. et Sich. 



1. Scolia frontalis, Sauss. 



Scolia frontalis, Sauss. Mem. Soc. phys. et hist. nat. Geneve, xiv. p. 38 



(1854), d9. 

 Scolia coronata, Sm. Cat. Hym. B. M. iii. p. 112 (1855). 



Hah. Adelaide, S.A. ; New South Wales; Eastern 

 Queensland. 



The typical form from Eastern Australia has a yellow band 

 on the vertex of the female and the sides of the pronotum 

 yellow in the male. But in specimens from Port Darwin 

 these yellow markings are absent in both sexes, the insects 

 being entirely black with the exception of the yellow spots 

 on the third abdominfil segment. For this form I propose 

 the name S. frontaHs, st. oh^cvriceps. The spines of the 



