BY ARTHUR WHITE. 159 



30. E R Y T H R o p o G N, White. (Fig. 26.) 

 Antennae about four times the length of the head, the 

 third joint conspicuously broadened; abdomen long and 

 ciub-shaped, much constricted towards the base; wings 

 large, with all the posterior cells and the anal cell open. 



Face long and flat, descending in a straight line from 

 the antennae to the moustache, the latter very small, and 

 confined to the oral margin. Antennae placed extremely 

 high, projecting horizontally forwards in a line with the 

 vertex, about four times the length of the head, the first 

 joint twice the length of the second, the third three times 

 the length of the first and second together, much broader 

 than either of them, and terminated by a rounded tip, 

 which seems somewhat separated from the rest of the 

 joint, although it does not form a distinct style. Thorax 

 with shoidders produced into prominent tubercles. Abdo- 

 men long and club-shaped, much constricted towards the 

 base. Legs with femora practically bare; tibiae with a 

 few bristles, the anterior pair with a small and incon- 

 spicuous apical curved spine. Wings large, with all the 

 posterior cells and anal cell open. 



This genus is nearly allied to Brachyrrho'pala, but is dis- 

 tinguished by the very much longer antennae. Only one 

 species is at present known. ' 



Erythropogon ichneumoniformis, White. (Fig. 26.) 



Thorax black ; abdomen with basal half red, apical half 

 reddish-black, fourth segment with a white foment ose 

 spot on either side; legs yellowish-red; antennae with the 

 first two joints red, third black. 



Length. Male, 15 mm.; female, 13-17 mm. 



Hab. Southern and northern Tasmania, also in Victoria. 



Fig. 26. Head of Erythropogon ichneumoniformis. 



Male. Face red-brown, with a few scattered white 

 hairs; moustache composed of a few pale golden bristles. 

 Front black. Antennae with the first two joints red, 

 third black. Thorax black, without bristles, but with a 



