74 H. C. EFFLATOUN. 



7. ERIST4LIS LATU. 



Latr., Hist. Nat. Crust. Ins., III. (1802) et XIV. 363. (1804). 



SYNOXYMY.-^Palpada M.uq., Suit, à Bnff., I. 512. 19. 

 (1834). 



PrIomrnisMMV; Suit, à liuff., I. 511. 18. (1834). 



S 1/ r i»Jn/ s Zi^TT. (iwr. Fahr.), Ins. Lappon., Dipt., 591. 52. (1838) 



ErisfalirnisJlom., Nuov. Annal Sci. Nat. Bol. (2). II. 453. I. 

 (1844). 



Eristahndes Rond., Nuov. Annal. Sci. Nat. Bol., (2) II. 453. 3. 



(1844). 



DolichoiiwrusMACQ., Dipt. Exot., suppl. 4., 131. (1849). 



Eristalonii/ia Ron'D.. Dipterol. Prodr., II. 38. 2. 7iota {Erisfa- 

 lomya) (1857). 



Simoides Lw., Œfv. Vct. Akad. Forh., XIV. 382. 14. (1858). 



/^■/r>;>.vLioY, Atti. Inst. Veneto, (3). IX. 743. 1. (1864). 



Duriosijrphus BiG., Annal. Soc. Ent. Fr., (0). IL, CXX. (1882). 



Dolyosyrphus Bic, Annal. Soc. Ent. Fr., (6). III. 228. (1883). 



Eristalodcs Mik, Wien. Entom. Zeitg.. XVI. 114. (1897). 



Lathiiroiihllidlinus MiK, Wien. Entom. Zeitg., XVI. 114. 

 (1897). 



Large or rallier large bee-like l'Iies, whieli are distinguislied 

 from ail other Egyptian (^enein hy tlie pceuliar veiiation of tlie 

 radial and cubital veins. 



Ilcad inoderate or rather large; face with a di.stinct central 

 knob and a moderately produced upper niouth edge, this latter be- 

 ing more or less descending. The central knob is always left shin- 

 ing black, clear of the i')ale dust and pubescence which cover and 

 obscure ail tlie sides of the face and most of the f rons. Face always 

 separated from the jowls by clear bright black spaces. Frons not 

 conspicuonsly produced and always distinctly pubescent. Eyes al- 

 ways touching in the nialc, sometimcs spotted and always hairy; 



