436 R. OSTEN SACKEN 



Psilopus crinicornis Wied. Auss. Zw. II, 222 (Java). 



c/', Mt. Singalang, Sumatra, July 1878 (Beccari). 



Although Wiedemann does not describe the gray cloud on 

 the wings, I have little doubt that it is the same species ; I 

 also saw it thus determined in Leiden. Psil. longicornis Dol. 

 3^^ Bijdr. 22 (Amboina) may be the same species, if the word 

 tibiis is substituted to tarsis in the description. 



SYRPHIDAE. 



Baccha vespiformis Dol. II, 35, Tab. Ill, f. 1 ! (Amboina). 



Four ((/'9) spec; Kandari, Celebes, April 1874 {Beccari). 



Ihave seen Doleschall's types in Vienna; the c/" has a broad 

 brown crossbani on the fourth segment only, the 3'^ segment 

 is unicolorous. 



Baccha moluccana Dol. II, 36, Tab. Ill, f. 2 (Amboina). 



Two (0(^9) spec; Ramoi, N. Guinea, Febr. 1875 (Beccari). 



The types in Vienna agree with this specimen. I believe that 

 the c/" and 9 belong together, although the one has a yellow 

 face the other a green metalhc one, with dense yellow pollen, 

 leaving only a dark stripe in the middle. The description refers 

 to specimens of the latter kind. 



Baccha n. sp. ? 



One 9, Gorontalo, Celebes, 1875 (Beccari). 



I do not describe this species, because, in the coloring of the 

 wings and of the abdomen (especially of the fourth segment), 

 it is exactly like Baccha apicalis Loew, Wien. Entom. Monatschr. 

 II, 106 (1858), from Japan. The difference consists in the colo- 

 ring of the two first abdominal segments and of the legs. The 

 specimen may be a mere variety. 



Chilosia sp. 



One c/'; Java (Beccari 1875). 



Belongs in the group with a hairy face, hairy eyes, and with 



