AUSTRO-MALAYAN DIPTERA 437 



a scutellum with a row of black bristles ; arista plumose ; etc. 

 (Compare Loew, Verb. Zool. Bot. Ver. 1857). The coloring and 

 general appearance has nothing abnormal. Only a single Chi- 

 losia has hitherto been described from Asia and Australia ; 

 Chil. australis Macq. from Tasmania. 



Melanostoma orientalis Wied. Auss. Zw. II, 139 (East-Indies). 



Two J'; Mt. Singalang, Sumatra, July 1873. 



Wiedemann describes a 9 > a-nd hence some discrepancies from 

 his description. Is this species really different from the common 

 M. scalaris F. ? 



Melanostoma sp. 



Two (/■, one 9; Java, Summit of the Pangerango (Beccari 

 1874). 



Altogether greenish black, with black legs and antennae : 

 three pairs of reddish spots on the abdomen, on segments 2-4 ; 

 in one of the c/' specimens these spots are much smaller than 

 in the other, and the first pair almost evanescent ; in the 9 

 they are also very small. 



Melanostoma sp. 



One cf^; Hatam, N. Guinea, June 1875 (Beccari). 

 European type. Abdomen red with infuscated incisures ; legs 

 red; wings slightly brownish. 



' Melanostoma sp. 



One 9; Hatam, N. Guinea, June 1875 (Beccari). 



European type; bluish-metallic with white pollen on face 

 and pleurae; abdomen black, opaque, with transverse, shining 

 bands, with a bluish-metallic reflection ; legs brownish ; wings 

 hyaline. 



Syrphus aegrotus (Fab.) Wied. Auss. Zw. II, 118! (Java). 

 Two 0^, Ternate, 1875 (Beccari); 9 Mt. Singalang, Sumatra, 

 July 1878 (id.). 



