44 H. C. EFFLATOUN. 



liiiid tarsi wliich are dark brown or blackish ; thcrc is also a 

 hroad dark brown ring on the hind feiiiora, near the apex; the 

 liind trochanters each'bear a large and strong spine, wbich is 

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

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

 scence on the Isgs 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 lùnd tarsi 

 bears about six very long In-istles. 



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

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

 strongly arquate outwardly, its deepest curb being just after the 

 rndio-niediaîi cross-vein. Squamulfe white, with a yellow margin 

 iiud white fringes. Haltères yellow. 



Female. — Rather simiiar to the maie. 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 ail the face is waxy-yellow. The black 

 and yellow markings on the last four or five abdominal segments 

 are ûsually much -more distinct than in the maie 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 thit segment is yellow. The fifth segment is 

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

 segment is dark brown, with its latéral margins somctimes yellow, 

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

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

 hind fcmora are lighter coloured. 



T.ength from 9i to 11 mm. 



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

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

 Alexandria, Helwan. Wadi TToff, AVadi Rishrash and my dates are 

 from June to May. 



X. œgi/pfium has for some timc been considered as asynonym 

 of X. scutdlaris Fabr. and is known to occur throughout Korth 

 Africa and in the Ethiopian Région. 



