388 



CALIFORNIA ACADEMY OF SCIENCES 



[Proc. 4th Ser. 



vinterii 



I 



irotbinlcnii 



J 



artnJ'ftmcnlii 



] , 



m<icro/em«r4li4 



oregonj. (<>■*, ttcJ) 



Diagram showing a suggested phylogeny for the Pipiza group of 



the Syrphidae 



