92 H. C. EFFLATOUN. 



8. HELOPH1LUS MEIG. 



Meig., System. Beschreib , III. 368. CXV. (1822). 



SYNONYMY:— Tubifera Meig., Nouv. classif., 34. 68. (1800). 



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



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



Liops Ko-nd., Dipterol. Prodr., II. 33. {Lejops) (1857). 



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



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



Eurymyia Mik, in Beck., Fauna v. Bernstein, il. 2., 68. (1885). 



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

 (1883). 



Eurhimyia Big., Annal. Soc. Entom. Fr., (6). III. 226. 230. 



(1883). 



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



Parhelophilus Girschn., Ulustr. Wochenschr. f. Entom., II. 

 604. (1897). 



This genus is closely allied to Eristalis, but distinguished by 

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

 longitudinally striped thorax. 



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

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

 separated in both sexes, although the separation is less in the males 

 than in the females and in our only Egyptian species, {Mesem- 

 brius capensis) they are almost touching in the male. 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 rather dull black with conspicuous yellowish-orange 

 markings on the second, third and sometimes also the fourth 

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

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



Wings very similar to Eristalis but cell Rl is opened" instead 

 of being closed. Squamulae very large. 



