A CHALOID PARASITE OF DIPTERA. 
under the notice of any one but the specialist. The photomicrographs 
of the parasites on the proboscis of T’abanus will give a good idea of the 
extent to which these flies are sometimes attacked. An account of them 
was published by the writer a good many years ago in the journal of 
the Tasmanian Field Naturalists’ Club, but, as nothing was then known 
us to the nature or affinities of the creatures, they did not excite any 
curiosity. It would be very interesting to know if they o¢eur on the 
mainland of Australia as well as in Tasmania. : 
‘CHALCID PARASITES ON PROBOSCIS OF DEXID. (Magnified.) 
1 
C.17610.—4 ’ ie aes 
