CATALOGUE 
OF THE 
DIPTEROUS INSECTS 
COLLECTED AT 
SINGAPORE AND MALACCA BY MR. A. R. AY ALL ACE, 
WITH 
DESCRIPTIONS OF NEW SPECIES. 
By FRANCIS WALKER, Esq,, F.L.S. 
[ From the Journal of the Proceedings of the Linnean Society 
of London, March 1856.] 
