MASON : DIPTERA OF THE ALFORD DISTRICT. 177 



Fam. ASILIDM. 



Philonicus albiceps Mg. Mumby Chapel, one, female, July 31st, 

 1888; J.E.M. (G.H.V.). 



Eutolmus rufibarbis Mg. Mumby Chapel, July 12th, 1886; 



J.E.M. (E.B.). 

 Dysmachus trigonus Mg. Mablethorpe, June 1887; H.W.K. 



(G.H.V.). 



Fam. THEREVIDAL. 



Thereva annulata F. Mumby Chapel, July 19th, 1886 ; J.E.M. 



(E.B.). 



Fam. EMPID.E. 



Empis borealis L. Well, June 6th, 1885 ; J 



Empis tesseilata F. W 

 Empis stercorea L. \> 



(G.H.V.). 



Tachypeza nubila Mg. 



Junei6th, 1888; J 



June 25th, 1888; J 



J^y 



J.E.M 



Tachista 



July 



1888 ; no initials given. 



romia 



Well, one male, June 16th, i888„ 

 :rd, 1888; J.E.M. (G.H.Y.). 



Fam. DOLICHOPODIDsE. 



Dolichopus trivialis Hal. Well, one male, June 25th, 1888; 



J.E.M. (G.H.V.). 

 Argyra argyria Mg. Mumby Chapel, one male, July 31st, 1888 ; 



J.E.M. (G.H.V.). 



Fam. SYRPHIDsE. 



Chilosia cestracea L. Chapel, July 26th, 1885 ; J 



Chilosia fiavimana Mg. 



lucorum 



J.E.I 



July 



J.E.M. (G.H.V.). Well, two, June 10th and 16th, 1888 ; J.E.M. 



(G.H.V.). 

 Platychirus clypeatus Mg. Mumby Chapel, August 1887; 



J.E.M. (E.B.). 

 Platychirus manicatus Mg. Alford, one female, June 1888; 



J.E.M. (G.H.V.). 

 Syrphus ribesii L. Mumby Chapel, July 25th, 1887; J.E.M. 



(E.B.). Alford, June 27th, 1887; J.E.M. (E.B.). Well, June 



J 



J 



August 



'•* 



June 1896. 



M 



