THE JOURNAL 



THE LINNEAN SOCIETY. 



Synopsis of the Diptera of tlie Eastern Archipeiago discovered 

 by Mr. Wallace, and noticed in the ' Journal of the Linnean 

 Society.' By F. Walkeb, Esq., F.L.S. 



[Eead June 1, 1865.] 



The synopsis which follows these notes is arranged like Mr. 

 Smith's tabular geographical view of the Hymenoptera of the 

 Eastern Archipelago in the Seventh Volume of the ' Journal of the 

 Linnean Society.' The synopsis only contains the species dis- 

 covered by Mr. Wallace ; and the districts may be mentioned in 

 the following order : — 



Malacca, with Mount Ophir, affords 51 species, and Singapore 

 67 species. Borneo comes next in succession, passing by Sumatra 

 and Java, where the fauna is generally very distinct from that of 

 the rest of the archipelago. Only 129 species are recorded from 

 Borneo, and this extensive region is very inadequately represented. 

 In Celebes the species collected amount to 236. Ambioyna comes 

 next ; and several species of this island have been recorded by Dr. 

 Doleschall, in addition to the 50 species collected by Mr. Wallace. 

 Aru supplies 166 species ; Batchian contributes 75 species ; and 

 ]S"ew Gruinea, the most eastern district, enumerates above 70. 

 The other isles have been so little investigated that they may be 

 passed over without notice. 



About 300 species of Philippine Diptera have been lent to me 

 by Professor BeUardi, and a very large proportion of them are 

 undescribed. 



The following families are not referred to in these notes ; for 

 their occurrence in the archipelago is as yet nearly or entirely 



LINK. PEOC, — ZOOLOGT, VOL. IX. 1 



