A Monograph of Egyptian Dip/era. 87 



rupted by a fairly large space in their middle, which space is 

 equal in length to that of the upper end of the stripe, the sutures 

 being situated in the centre of these interruptions ; the lower 

 halves of these stripes extend some distance below the centre of 

 the thorax and gradually decrease in width downwards ; the two 

 middle stripes extend from the top of the thorax to about its 

 middle. Postalar calli very large, prominent and shining dark 

 brown. Scutellum orange-yellow, translucent and shining. Pubes- 

 cence of the thorax and the scutellum is light yellow, thick all over 

 but short and even. 



Abdomen orange-yellow with transverse black markings ; the 

 basal segment is very pale yellow and shining; the second segment 

 dull orange-yellow, except in the centre, where it is yellowish- 

 white and its upper and lower margins which are dull black, 

 forming two fairly large and conspicuous black bands, which are 

 thicker towards the centre and gradually become thinner towards 

 the side margins ; the third segment has its upper half whitish- 

 orange, except for its extreme upper margin which is deep orange, 

 and for a black elongate spot in the centre of this margin ; the 

 lower half of the segment is dark brown above, gradually getting 

 deeper below until it reaches the lower margin, which is deep 

 metallic black and traversed by a thick wavy whitish-yellow band, 

 which, on the sides of the segment is situated about the middle, 

 and in the centre much higher up, its upper edge almost touching 

 the upper margin ; the lower end of this segment is very shining; 

 the fifth, sixth and seventh segments are black and almost comple- 

 tely retracted in the fourth. Pubescence of the abdomen mainly 

 following the ground colour, fairly dense but short and slightly 

 longer and uniformly paler on the fourth segment. Venter 

 orange-yellow and opaque, rather deep coloured in the centre and 

 much lighter at the base ; the basal half of the fourth segment is 

 brown and its lower half black ; its pubescence is very thin and 

 scattered and almost all pure white. 



Legs with the front and hind femora dark brown and wil h 1 1 k- 

 tip of the two front pairs yellow ; hind tibia; dark brown, almost 

 black, except at the base where they are very pale yellow; they are 

 compressed about the middle and rather twisted. Front and 

 middle tibiae have their basal halves pale yellow and their distal 

 halves brown ; front and hind tarsi with their dorsal surface dark 

 yellow, and their tips dark brown dorsally, but paler below. Vesti- 

 ture of legs mainly following the ground colour, fairly short 

 except on the hind femora and tibia?, where they are coarser and 

 longer. 



Wings pale yellowish-brown near the base, with a small 



