32 Bulletin de la Société Entomologique d'Egypte 



a little alier the hiriircations ol'the radiais R2 R3 and the 

 medians Ml M2. 



At the extremity of all the nervnres, with the ex- 

 ception of R5 and A, is fonnd a small white spot com- 

 posed of erect and ühli([ne white hairs. 



The alar Cringe is well developed, its hairs generally 

 possessing a mnch lighter extremity. 



The hairs of the fringe on the inferior region are 

 longer than those on the snperior region. 



Thorax: the vestiture of the thorax is very dense 

 and tufted, of variahle colour ; it is as a rule greyish, 

 hut sometimes dirty white or even hrownish. 



Lof/s : appear very thick owing to their heing cover- 

 ed with tlense hlack hairs, and to the ventral and dor- 

 sal fringes of hlack hairs on the tihiae. They possess 

 ringlets of while hairs on the apex of the tihiae and 

 metatarsi. 



Abdomen: Shorter than the >vings and haiiy: its 

 vestiture is as a rule darker than that of the thorax ; 

 it is composed of grey hairs interspersed with white. 

 Often the tufts of darker hairs are disposed in trans- 

 verse stripes alternating with the stripes of lighter 

 hairs, and thus, to some extent, separating the segments, 

 which are eight in numher. 



Length of female 8-4 mm., very similar to the male 

 hut is as a general rule larger. This furnishes a useful 

 assistance for sejiarating the sexes in large series. 



In conclusion I desire to ex{)ress my indehtedness 

 antl thanks to ])r()fessor E. Hindle, at whose suggestion 

 the work was liist taken up, loi- much heljiful advice 

 and criticism. 



