Wiiiffdle : Durham D/'pfeni. 277 



Lonchoptera lacustris Mt;'. Gibside, one i and one 9, April 1S9S; 



Harperley, two 9 s, April 1900; Bishop Auckland, two 9 s, Feb. and 



March 1898. 

 Lonchoptera tristis Mt;". Bishop Auckland, throe 9 s, Jan. 1902. 



Fam. FLATVPFZID.F:. 



Callimyia speciosa .Mi^r. Bishop Auckland, two is, June 1901-2. 

 Callimyia amoena IMg'. Bishop Auckland, one i , June ; one 9 , Sept. ; 



Hesleden, one ^ , Au^f. 1902. 



Fam. PIPU,\CULID.-E. 



Verrallia piJosa Ztt. Harperley, one 9 , June 1900. 

 Pipunculus furcatus Eg-tir. Barnard Castle, one 9 , June 1901. 

 Pipunculus terminalis Thorns. Bedbmn, one 9, July 1902. 

 Pipunculus campestris Ltr. Hesleden, one 6 and one 9 , Au^. 1900 and 



1902 ; Bishop Auckland, one 9 > Sept. 1902. 

 Pipunculus pratorum Fin.? Hesleden, two 9 s, Aui;-. 1902. 

 Pipunculus campestris Ltr. Hesleden, one 9, .Aujjust 1900. 

 Pipunculus pilosus Ztt. Harperley, one 9, June 1900. 



Fam. SVRPHID.^. 



Pipizella virens F. Hesleden, one 9 , Aug-. 1902. 



Pipiza noctiluca. Belburn, one i, June 1898; Bishop Auckland, three 

 9 s, June-Jul\- 1901. 



Liogaster metallina V. Bollihope, one 9 , June 1901. 



Chrysogaster hirtella Lw. Harperley, two 9s, June; Bedburn, three 

 9 s. Juh- ; Hesleden, one 9 , Aug-. 1902. 



Chilosia maculata Fin. Belburn, eight (5 s, June 1898-1899. 



Chilosia sparsa Lw. Hesleden, one S, May 1899. 



Chilosia pulchripes Lw. Hesleden, one 9, Aug-. 1899; Harperley, one 

 9 , .April 1900. 



Chilosia variabilis Panz. Harperley, one 9, April igoo; Co. Durliam, 

 one 9 . 



Chilosia intonsa Lw. Hesleden, one 9 , Aug-. 1899. 



Chilosia illustrata Har. Hesleden, ten 6 s and five 9 s, July-Aug-. 1S99-02. 



Chilosia impressa Lw. Hesleden, one 9 , Aug^. 1899. 



Chilosia albitarsis Mg. Belburn, two 9 s and one 9 , June 1898; Hesle- 

 den, one S and one 9 , Aug-. 1899 ; Evenwood, one S and one 9 , June 

 1899 ; Harperley, one 6 and one 9 , June 7900 ; Bishop Auckland, three 

 ? s, June-July 1899-1901. 



Chilosia fraterna Mg. Gibsonees, one <5 , Aug. 1897. 



Chilosia vernalis Fin. Hesleden, three (5 s, Aug;. 1899. 



Chilosia proxima Ztt. Hesleden, one 9 , Aug. 1899. 



Platychirus manicutus M_g. Very common. 



Platychirus peltatus Mg:. Belburn, one 6 and two 9s, June-July; 

 \Vearhead, one 5 , July 1897 ; Esconib, one 9 , April i8g8. 



Platychirus scutatus Mg. Very common. 



Platychirus albimanus F. Very common. 



Platychirus clypeatus .Mg. Common. 



Platychirus angustatus Ztt. Hesleden, common at rushes. 



Pyrophaena granditarsa Forst. Hesleden, one 9, Aug. 1902. 



Pyropheena rosarum F. Harperley, one 9, June 1902. 



Melanastomum mellinum L. \'er\' common. 



Melanastomum scalare F. Very common. 



1903 July I. 



