4-44 Mr. ]\. E. Tinner on Fo^sor/uZ Iltjmcnoplera. 



This is a conimon species iu Soutli-westcni Australia. 

 The male has a large tubercle on the second ventral si^gmeut, 

 a low lou'ritudinal 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 elypeus in 

 both sexes than in other S[)eci(;s. 



Bembex flavipes, Sm. 



Btnihexjlnvipes, Sm, Cat. Ilym. R.M. iv. p. 32.j (1856). $; Turn. 

 Proc. Zool. Soc. London, p. 502 (19 J8). <S . 



Hah. Mackav, Q. {Jurner^ ; Townsville. Q. [Bodd) ; 

 Alexandria, N.f. {Stalker) ; Adelaide River, N.T. [Jl'alker). 



The male is easily distinguished by the white clypens, 

 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 anteiuue, 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 al)domen 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 elypeus 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 tlie form of the elypeus 

 different. 



Bembex musca, Ilandl. 



Bcmbex musca, IlanfJl. Sitzber. Akad. Wiss. Wien, cii. p. 8i4 (1893). 

 6. 



Hab. Australia. 



I have not been able to identify this species with any 

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

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

 of the antennse. The male only is described. 



