.1 M<> no graph of Egyptian Dip/era. 51 



A rather large and very handsome species much resembling 

 L. pyrastri but easily separated by the above characters. 



DESCRIPTION:— Male, (PI. IV, fig. 4 & PL I, fig. 11).— Pace 

 bright shining yellow with a black middle line which does not 

 nearly extend to the antennae, but which is partially con- 

 tinued below round the mouth-edge, narrow in the hollow 

 below I he antennae and much increasing in width to the uppei 

 mouth-edge. Frons very large and inflated; it is a little darker 

 than the face and clothed with dark grey, rather abundant pubes- 

 cence. Pubescence on face also fairly abundant, but very short and 

 almost white below, and dark grey and a little longer above by the 

 sides of the antennae. Vertex very small, black, with blackish 

 oubescence on the disc, but pale behind. Occiput entirely covered 

 with white silvery dust and dense, rather long, almost pure white 

 and fairly conspicuous pubescence. Eyes covered with short pubes- 

 cence which is light brown in front, and pale, almost white on 

 the middle; the top of the eyes and the hind margins are free 

 from pubescence ; the facets on all the upper part of the eyes, 

 except just on the front and back are much larger than the others. 

 Antennae more or less reddish blown to brownish-black, with the 

 two basal joints usually lighter in colour, as well as the ventral side 

 of the rather long third joint; arista yellowish-brown and bare; 

 it is inserted before the middle of the third joint and thickened 

 for more than its basal half. 



Thorax very shining blackish-blue, but yellow on the sides. 

 Pubescence not dense, very pale greyish-white to white, except on 

 the sides where it is rather dense, tufted, and yellowish, especial- 

 ly in front. Scutellum brownish-yellow when viewed sideways, but 

 always obscured by transparency when viewed from above, and 

 its pubescence is not dense but fairly long and almost uniformly 

 whitish. Abdomen deep, dull, somewhat velvety black, but shining 

 on the lower margins of the three basal segment, and with three 

 pairs of thick, pale yellow, yellow, or orange-yellow lunules. The 

 first pair of lunules which are on the second segment are almost 

 straight, but narrower at their inner ends. The second and third 

 pairs of lumues on the third and fourth segments respectively, arc 

 sloped on their upper margin, from about the middle of the side 

 of the segment upwards towards the front margin; they are dis- 

 tinctly narrowed about their middle and dilated at the inner ends 

 which usually touches the front margin; none of these lunules 

 actually touch the side-margins. The fourth and fifth segments 

 have yellow, narrow hind margins. Pubescence short, mainly pale, 

 whitish and occasionally there are a few darker hairs interspersed 



