BY T. HARVEY JOHNSTOIir AND M. J. BANCROFT. 

 M. vetustisaima. 



39 



M. terrce-regince. 

 41 bred cowdung . . 14-26 daj^ No 



Total 41 flies 



1 44 captured 



Onchocerca embryos 

 detected. 



24 



Total 79 flie» 



Black Fannia. 

 3-14 days , 



captured 



captured 



captured 



2-18 days 



1-11 days 



1 day 



No development noticed in 

 any. 



Onchocerca embryos were 

 found in 34 ; the embryos 

 were recovered up to the 

 14th daj' in an undigested 

 conditions, but in all cases 

 unite motionless. They 

 were usually- found in the 

 crop or intestine, but 

 occasionally free in the 

 abdomen, having in these 

 cases probably been set 

 free by the rupture of one 

 or other of the above 

 organs during dissection. 



Dead Onchocerca embryos 

 were found in 3 flies 

 dissected on 6th, 11th and 

 16th days. 



Dead Onchocerca embryos 

 were found in one fly on 

 the 2nd day. 



No Onchocerca detected. 



No development observed 

 in anv. 



