276 ]] /)io-(ife : Durham Dipiera. 



Oxydromia glabricula Fin. Hesleden, one 6 ; Bishop Auckland, two c? s 



and two 9 s ; Sluill, one 9 , April-Sept, igoo-1901. 

 Clinocera fontinalis Hal. BoUihope, one 9 , June 1901. 

 Clinocera bistigma Lurt. Wearhead, one 6 and three 9 s, Aug-. 1901. 

 Ardoptera irrorata Fin. BoUihope, one c5 , June 1901. 

 Chersodromia arenaria Hal. Hesleden, two <5 s and two 9 s, Aug-. 1900. 

 Tachydromia flavipes F. Bishop Auckland, seven c5 s and five 9 s. May 



1897 and 1900; Stanhope, one 6 , May 1900 ; Evenwood, one 9 , May 1897. 

 Tachydromia cursitans F. Hesleden, one £, Aug-. 1899; Bishop 



Auckland, two 9 s, July 1900-1901. 

 Tachydromia bicolor V. Hesleden, one c? , Aug-. 1899. 



Fam. DOLICHOPODID.^. 

 Psilopus platypterus V. Bishop Auckland, one 9 , July 1900. 

 Neurigona quadrifasciata F. Barnard Castle, one 9 , June 1900. 

 Dolichopus atripes Mg-. Waskerley, one 6 and one 9 , July 1901. 

 Dolichopus vitripennis Mg-. Waskerley, seven c? s, July 1901. 

 Dolichopus atratus Mg-. Waskerley, five is and five 9s, July 1901. 

 * Dolichopus picipes Mg-. Bedburn, five i s and two 9 s. 

 Dolichopus plumipes Scop. Waskerley, twelve S s ; Wearhead, two i s, 



Julv-Aug. 1901. 

 Dolichopus pennatus Mg-. Harperley, one 6, June 1902. 

 Dolichopus popularis W. Bishop Anckland, one 6 ; Bedburn, two cf s 



and three 9 s, June-Julj- 1902. 

 Dolichopus urbanus Mg. Bedburn, two is, July 1902. 

 Dolichopus griseipennis Stan. Hesleden, two i s and one 9 , Aug. ; 



Bishop Auckland, two J s, July 1899-1901. 

 Dolichopus trivialis Hal. Bishop Auckland, two i s and one 9 , July ; 



Hesleden. three i s and one 9 , July-Aug-. ; Waskerley, one i , July ; 



\\'earhead, two 9 s, July 1899-1901. 

 Dolichopus brevipennis Mg-. South Durham, two <5 s. 

 Dolichopus asneus Deg. Common. 



Hercostomus nigripennis Fin. Wearhead, one S, Aug. 1901. 

 Gymnopternus cupreus Pin. Bedburn, one 6, Juh- 1902. 

 Gymnopternus asrosus Fin. Waskerley, eigfht is; Bishop Auckland, 



one 6 , Jul\- 1900-1901. 

 Chrysotus gramineus Fin. Hesleden, one 9 , Aug-. 1900. 

 Argyra diaphana F. Bedburn, one 9 , 1902. 

 Argyra argentina Mg-. Belburn, one c5 , July 1897 ; Wearhead, one <f , 



Aug-. 1 90 1. 

 Syntormon pallipes F. Hesleden, one i and one 9 > Aug. 1901. 

 Xiphandrium caliginosum Mg. Bishop Auckland, one 6 , May 1900. 



Xiphandrium monotrichum Lw. Bedburn, one c? and one 9 , July . 



Scellus notatus F. Bishop Auckland, one d , June 1900 ; Hesleden, four 



9 s, Aug-. 1 899-1900. 

 Hydrophorus praecox Lehm. Hesleden, one i and four 9 s, June-Aug. 



1900; Wearhead, one 6, Aug. iqoi. 

 Liancalus virens Scop. Wearhead, one 9 , Aug-. 1901. 

 Campsicnemus curvipes Hesleden, one 6 , Aug. 1900. 



Fam. LOXCHOPTERID.^.^ 



Lonchoptera punctum Mg. Bishop Auckland, one 6, Marcli 1898; 

 Harperley, two 9 s, April 1900; Belburn, one S, May 1900. 



Lonchoptera trilineata Ztt. Gibside, one 9, April 1898; Bishop Auck- 

 land, March 189S; Harperle}-, one 9, April 1900. 



