444 Mr. R. E. Turner on Fossorial Ilymenoptera. 



This is a common species in South-western Australia. 

 The male has a large tubercle on the second ventral segment, 

 a low longitudinal carina on the third, and the sixth unarmed. 

 The seventh dorsal segment is truncate at the apex. The 

 eyes are more strongly divergent towards the clypeus in 

 Loth sexes than in other species. 



Bembex flavipes, Sm. 



Bembex Jlavipes, Sm. Cat. Hym. B.M. iv. p. 325 (1856). £ ; Turn. 

 Proc. Zool. Soc. London, p. 502 (1908). 6- 



Hub. Mackay, Q. {Turner); Townsville, Q. (Dodd) ; 

 Alexandria, N.T. (Stalker) ; Adelaide River, N.T. [Walker). 



The male is easily distinguished by the white clypeus, 

 which has a black band at the base and is almost vertically 

 truncate anteriorly, the face of the truncation subconcave 

 and the apex widely and shallowly emarginate. There is a 

 large tubercle on the penultimate joint of the antennae, and 

 the apical joint is very sharply bent in the middle, the apical 

 point being almost at right angles to the rest of the joint. 

 The ventral surface of the abdomen is armed as in the musca 

 group with a large tubercle on the second segment, truncate 

 at the apex, and a flat triangular tubercle on the sixth 

 segment. The female has the clypeus yellow, with a more 

 or less defined A -shaped black mark at the base, strongly 

 convex, the anterior tarsi with six spines on the basal joint, 

 and the sixth dorsal segment marked with two yellow spots. 

 In both sexes the ventral surface of the abdomen is almost 

 entirely yellow. The female might possibly be confused 

 with some of those of the musca group, but the markings 

 are much more extensive and the form of the clypeus 

 different. 



Bembex musca, Handl. 



Bembex musca, Handl. Sitzber. Akad. Wiss. Wien, cii. p. 814 (1893). 

 6. 



Hab. Australia. 



I have not been able to identify this species with any 

 certainty. It is very near B. littoralis, Turn., but seems to 

 differ a little in the structure of the eighth and ninth joints 

 of the antennae. The male only is described. 



