44 H. C. EFFLATOUN. 



hind tarsi which are dark brown or blackish ; there is also a 

 broad dark brown ring on the hind femora, near the apex; the 

 bind trochanters each bear a large and strong spine, which is 

 yellow and directed backwards and downwards, (PI. II, fig. 5) ; the 

 inner claws of the front tarsi are bicuspidate, (PI. II, fig. 6). Pube- 

 scence on the legs very short, tawny yellow and inconspicuous, and 

 on the hind tarsi blackish; the last rounded joint of the front tarsi 

 possesses a few longish yellow bristles above, also the middle tarsi, 

 but the bristles are fewer, while the fifth joint of the hind tarsi 

 bears about six very long bristles. 



Wings pellucid with the subcostal cell yellow, and the stigma, 

 as well as the base of all the veins pale brown ; Radius 4 + 5 is 

 strongly arquate outwardly, its deepest curb being just after the 

 radio-median cross-vein. Squamulaj white, with a yellow margin 

 and white fringes. Halteres yellow. 



Female. — Rather similar to the male. The antennae are much 

 darker above. Vertex and the upper part of the frons are shining 

 black with a vertical, narrow black band in the centre, which 

 extends to the antennae, and which is brownish at about the middle; 

 the rest of the frons and all the face is waxy-yellow. The black 

 and yellow markings on the last four or five abdominal segments 

 are usually much more distinct than in the male and the yellow 

 band on the second segment is never interrupted. The yellow band 

 on the fourth segment occupies about three-fourths of the 

 segment leaving the base black ; it is a little emarginate below ; 

 the lower margin of this segment is yellow. The fifth segment is 

 shining black with its hind and lateral margins yellow. The sixth 

 segment is dark brown, with its lateral margins sometimes yellow, 

 and the seventh segment is dark brown, almost blackish. Ovipo- 

 sitor shining black. The tarsi in general, and also the ring on the 

 hind femora are lighter coloured. 



Length from 9^ to 11 mm. 



Although this species is not rare in Egypt I have never known 

 in to occur abundantly. It occurs in Cairo and its neighbourhood, 

 Alexandria, TIelwan, Wadi Hoff, Wadi Rishrash and my dates are 

 from June to May. 



X. cegyptium has for some time been considered as a synonym 

 of A', scutellaris Fabr. and is known to occur throughout North 

 Africa and in the Ethiopian Region. 



