BY T. HARVEY JOHNSTON AND M. J. BANCRFOT. 



69 



Captured 31. fergusoni infected with Habronema — details 

 of infection. 



A record of the localities in which the flies were 

 captured was made, but as all places appeared equally 

 infected the record is not given here. There was no obvious 

 difference in regard to the infection of the two sexes. 



Bred flies — M. fergusoni (Eidsvold). 

 M. fergusoni when bred on infected material becomes 

 very heavily parasitised by Habronema. 



