A Monograph of Egypl'tan Dïplcra. 



TABLE OF NORTIl AFRICAN GENERA. 



1 (40) AnttMiii;c inoderate in length and more 



or l'jss (Irooping, never placcd on a 

 produced Intiis. 



2 (2!)) liatlio-iiicdiaii cross vciii j)lacv(! lud'urc 



tlic iiiiddlc of ivU M2 (SYKl'llli\,K). 



;i (G) l'are liât or rotreatini;-, wi'Jioiit a 



central kiinh; oy;s and t'acL> ahvays 



hairv; tliorax aïways dark and i'ace 

 ahvays hlack. 



4 (.■)) Face with th;> iipner iiHUitli cdgc cou 

 spicuously produced 



1 TSILOTA. 



f) (4) Face without even tlie upper nionth 

 edgc produced ; frons of feinalc with 

 grey si de dust s^iots 2 Pipiza.* 



() (3) Face witli a central knoh or a conc-like 

 snuut. 



7 (8) Face arched and not liollowcd iKiieath 



the frontal proiiiinence and alwavs 

 partly or wholty yellow (PI. I, figs. 

 5, G, 7) • • • • 3 I'aragus. 



8 (7) I'"ac:e liollowed below tlic antenna^ and 



produced airain to a central knob or 

 upper moutli cdye or to both. 



!» (12) Entirely dark species without any pale 

 markings except on the legs and beneath 

 the third joint of the antennae 



10 (11) Metallic coloured species; no eye- 

 margins; outer top angles of both cells 

 R5 and M2 approximati ng right angles ; 

 eyes always bare 4 Chrysgoaster* 



*So far not rcprcsented in Egypt. 



