Séance du 24 Octobre 1923 137 



aiui 1 have also rapUirod il in Oclobcr and early No- 

 vember in the Wadi-llülf. 



Sphenìscomyia aegyptiaca n. sp. 



Parva, nigra, <iiialiiür scutelaribus chaetis, fronte 

 faciequc flava, tibiis poslicis ilavis alarumquc basali 

 quarta ])artc omnino hyalina a Sphcnisconiyia dcbskli 

 facillime dislinguenda. 



Male and Fcinaìc : lenglh oi body 2.3-3 mm., 

 ovipositor 0.6 mm., wing 2.7 mm. 



Frons dark yellow towards the centre but getting 

 paler towards the eye margins where it is almost 

 white owing to a very minute silvery-white pulveru- 

 lence; face greyish-yellow in the centre and silvery- 

 white on the sides; cheeks also silvery-white owing 

 to the same minute pulveruleiice and possessing a few^ 

 pale hairs in addition to some pale bristly hairs on 

 the back, beside the genal bristle; proboscis short, dark 

 yellow and possessing some pale, longish anct erect 

 hairs; palpi yellow, with some minute pale bristles 

 amongst which are intermingled a few black ones 

 near the tip ; occiput black; vertex dark yellow, 

 slightly narrower than the frons with the ocellar trian- 

 gle blackish; antennae yellow with the third joint 

 paler owing lo its minute white pubescece; arista black 

 except at the evtreme base yellow; all Ihe bristles of 

 the head are black except the inferior fronto-orbitals 

 which are dark yellow near the base and the genal 

 bristle very pale yellow. Thorax shining black, some- 

 what aeneous and bearing scattered, whitish, adpres- 



