Lowe: Diptera of the Warrington District. 151 



This species and L. tringaria are commonly known as 

 ' Downlookers ' in the country round here, from their trick 

 of alighting on tree trunks almost invariably head down- 

 wards. 



Leptis strigosa Mgn. Lane. S.: Sankey, April 1896, one. 

 This species is in italics (signifying want of confirmation) in 

 Verrall's list. 



Leptis tringaria L. Lane. S. : Rixton Firs, 27th July 1898, 

 two. 



Leptis lineola F. Lane. S.: Taylor Park, St. Helens, 13th 

 July 1898, four. 



Chrysopilus auratus F. Lane. S. : Rixton Firs, July 1898, 

 common. 



THEREYID^E. 



Thereva nobilitata F. Lane. S. : Rixton Firs, May 1896, 

 one. Chesh. : King-'s Wood, Delamere, 30th June 1899, 

 cT and $ in cop. 



EMPID^rE. 



Rhamphomyia sulcata Fin. Chesh.: Moore, one at sallow- 

 bloom in April 1897. 



Empis tessellata F. Chesh.: Wood near Hatchmere, in 

 abundance, nth June 1899. 



Empis trigramma Mgn. Lane. S.: Burtonwood, in June, 

 abundant. 



syrphim:. 



Chrysogaster metallina F. Chesh.: Wood at Daresbury, 

 June 1896, one. 



Chilosia pulchripes Lw. Chesh.: Near W'alton Arches, 

 middle of May 1896, one. 



Chilosia grossa Fin. Chesh.: Moore, April. Every year 

 I take two or three specimens of this 'fine and rare species' 

 (Dr. Meade) on one particular bank at Moore, when the 

 sallows are in bloom — sometimes on the catkins, sometimes 

 on the herbage. 



Leucozona lucorum L. Chesh.: Whitley, 31st July [898, tour. 

 Melanostoma scalare V. Chesh.: Walton Arches, Augusl 

 1897, one. 



Pyrophsena ocymi V . Chesh.: Field near Appleton Reservoir, 

 1 uly 1896, one. 



Platychirus manicatus Mgn. Lane. S. : Burtonwood, in June 

 and July, common. 



I90O May i. 



