92 H. C. EFFLATOUN. 



8. HELOPHILUS MEIG. 



Meic, System. Bcschreib , III. 3G8. CXV. (1822). 



SYNONYMY:—Tiibif('ra Meig., Nouv. elassif., 34. G8. (1800). 



Elophilus Meig., in Illig. Mag. f. Ins., II. 274.78. (1803). 



Dolichogyna Macq., Dipt. Exot., II. 2., 65.18. (1842). 



Liops Rond., Dipterol. Prodr., II. 33. (Lejojis) (1857). 



Mesembrius Rond., Dipterol. Prodr., II. 50. nota (1857). 



Anasimyia Schin., Catal. syst. Dipt. Europ., 108. (1864). 



Eurymyia Mik, in Beck., Fanna v. Hornstein, il. 2., 68. (1885). 



Eurimyia BiG., Annal. Soc. Entom. Fr., (6). III. Bullet., XX. 

 (1883). 



Eurhunyia Bio., Annal. Soc. Entom. Fr., (6). III. 226. 230. 

 (1883). 



Eurinomyia Mik, Wien. Entom. Zeitg., XVI. 115. (1897). 



Parhelophilus Girschn., lUustr. Wochcnschr. f. Entom., IL 

 604. (1897). 



This genus is closely allied to Eristalis, but distinguished by 

 cell RI which is open, the bare eyes, and the less pubescent and 

 longitudinally striped thorax. 



Face with a central knob and with a more or Icss produced 

 upper mouth-edge ; eyes always bare and nearly always well 

 separated in both sexes, although the séparation is less in the maies 

 than in the females and in our only JCgyptian spccies, {Mesem- 

 brius capensis) they are alinost touching in the maie. Antennae 

 moderate and bearing dorsally a bare and simple arista. Thorax 

 dull blackish with conspicuous longitudinal yellowish lines and less 

 pubescent than in Eristalis. Scutellum usually brownish-yellow. 



Abdomen ratlier dull black with conspicuous yellowish-orangc 

 inarkings on the second, third and sometimes also the fourth 

 segments ; pubescence more or less dense. Legs strong and black- 

 ish; the hind femora are thickened and the hind tibise curved. 



Wings very similar to Eristalis \mi cell Ri is opened^instead 

 of being closcd. Squamnl.T very lai'gc. 



