AUSTRO-MALA YAN DIPTERA 441 



Eristalis resolutus Wk. J. Pr. Lin. Soc. Ili, 95! (A.m; in the 

 Synopsis also N. Guin., Key, Sula). 

 Four 9, Aru Isids; Wokan, 1873 (Beccari). 

 The description is recognizable. 



Eristalis zonalis (Fab.) Wied. Auss. Zw. II, 152! (China). 



Syn. e. flavofasciatus Macq. D. E. Suppl. IV, 136 (Java). [Schiner]. 



One 9, Mt. Singalang, Sumatra, July 1878 (Beccari). 



Macquart's description was drawn from a very pale specimen, 

 and must be taken in connection with what he says in the 

 note. The synonymy is admitted as certain by Schiner, Nov. 

 365, who had received specimens from Paris. In his Suppl. V, 

 86 Macquart described it a second time, as Megaspis zonalis 

 Wied. ! 



Eristalis errans (Fab.) Wied. Auss. Zw. II, 155 ! (Java, China). 



Syn. Eristalis varipes Macq. D. E. II, 2, 46, Tab. X, f. 4 (East-Indies, 



China). 

 Eristalis Mlacquartii Dol. 1 Bijdr, 8, Tab. VII, f. 1 ! 

 Eristalis Amphicrates Walk. List, etc. Ill, 623 ! 



Twenty c/' 9 specimens from Buitenzorg, Java, 1875 (Ferrari), 

 Sumatra (Beccari) and Timor (L. M. B'Albertis). 



The metalhc spots on black ground, on the 3*^ and 4*^ abdo- 

 minal segments are not mentioned in Wiedemann's description , 

 but they exist in the typical specimens. 



This is a common and widely distributed species. It also oc- 

 curs in the Philippine Islands. 



Eristalis niger Wied. Auss. Zw. II, 183 (Java). 



One 9, Ramoi, N. Guinea. Febr. 1875 (Beccari). 



The description agrees very well, only my specimen is smal- 

 ler ; I have not compared it with the type in Vienna. E. horn- 

 boides Wk. J. Proc. Lin. Soc. IV, 119 </■ (Celebes) and espe- 

 cially V, 239 9 (N. Guinea) may very well be the same spe- 

 cies, if we make some allowances for M.'^ Walker's manner of 



