27S Wiiigatc : Diirhtim Diptera. 



Leucozona lucorutn L. Gibsonees, one c5 , Autj. 1S97 ; Belburn, two ,5 s, 



June 1898; Hesleden, one V, ^^ngf- 1900. 

 Ischyrosyrphus glaucius L. Gibside, one J and four ? s, Aug-. 1S96; 



Wearhead, one ?, Aug-. 1901 ; Hesleden, six 9 f^, Aug. 1899; Sliipley, 



two 9 s, July igoo. 

 Catabomba pyrastri L. Hesleden, six 6 s and six 9 s, Aug. 1899 ; Gib- 

 side, one 9 ; Barnard Castle, one 9 > June 1900. 

 Catabomba selenitica Mg. Wearhead, one 6, Au.g. 1901. 

 Syrphus albostriatus Fin. Hesleden, one S and one 9, Aug. 1899; 



Gibside, one 9 , Aug-. i8g6 ; Bishop Auckland, one 9 , July 190O) 

 Syrphus albostriatus var. confusus. Bishop Auckland, one 6 and one 



9 , J u 1 V 1 90 1 . 

 Syrphus tricinctus Fin. Hesleden, one ;5 and one 9, Aug. 1899; Har- 



perley, one 6 , June 1900; Gibside, two 9 s, Aug. 1896. 

 Syrphus venustus Mg. Evenwood, four i s and one 9 , June 1897-1899; 



Bishop Auckland, two 9 s, June 1887 ; Belburn, one 6 and two 9 s, June 



1898-1899 ; Barnard Castle, one 9 > June 1900. 

 Syrphus lunulatus Mg. Hesleden, one 9 , Aug. 1902. 

 Syrphus vittiger Ztt. Hesleden, one c5 and one 9, Aug. 1899; Gibside, 



one 9 , Aug. 1896 ; Shiplev, one 9 , May 1898 ; Harperley, one 9 , June 



1900; Wearhead, one 9, Aug-. 1901. 

 Syrphus grossularias Mg. Hesleden, eleven 9 s, Aug. 1899; Gibside, 



three 9 s, Aug. 1896. 

 'Syrphus ribesii L. Very common. 

 'Syrphus vitripennis Mg. Common. 



Syrphus latifasciatus Mcq. Wearhead, three c' s and one 9, Aug-. 1901. 

 Syrphus corollas E. Common. 

 Syrphus luniger Mg. Common. 



Syrphus bifasciatus F. Bishop Auckland, three 9 -s, June 1S97-1S99. 

 Syrphus balteatus F)e.g. Very common. 



Syrphus cinctellus Ztt. Gibside, one 6 and one 9 , Aug-. 1896 ; Hesle- 

 den, one 6 and nine 9 s, Aug. 1899; Shull, two 9 s, Sept. 1900; Shipley, 



one 9 . Ji'l>' 19-JO. 

 Syrphus cinctus Fin. Bishop Auckland, one 6 and one 9 , July 1901. 

 Syrphus auricoHis Mg. Bishop Auckland, one 6, July 1897. 

 Syrphus auricollis \ar. maculicornis Ztt. Hesleden, one (5 and one 9 , 



Aug. 1899. 

 Syrphus umbellatarum F. Hesleden, one 9 , Aug. 1899. 

 Syrphus compositarum Verr. Hesleden, four 9 s, Jul^'-Aug. 1899. 

 Syrphus labiatarum \'err. Hesleden, one i , Aug. 1902. 

 Sphaerophoria scripta L. Hesleden, thirteen i s and twelve 9 s, Aug. 



1 899- 1 900. 

 Sphaerophoria scripta var. nigricoxa Ztt. Hesleden, three 6 s, Aug. 



1 899- 1 900. 

 Sphaerophoria menthastri L. Hesleden, three is, Aug. 1899-1900; 



Wearhead, two 6^, Aug. 1901. 

 Sphaerophoria menthastri var. picta Mg. Hesleden, four J s and eleven 



9s; Bishop Auckland, \\'earhead, etc., 1897-1901. 

 Sphaerophoria menthastri var. taeniata Mg. Wearhead, one c? , Aug. 



iqoi ; Heselden, one 6 , Aug. iqoj. 

 *Baccha elongata V. Hesleden, one c' and seven 9 s ; Bishop Auckland, 



two 9 s, June-Aug. 1897-1901. 

 Spbegina clunipes Fin. Shipley, one 9 , July 1900. 

 Ascia podagrica ¥. \'ery common. 

 Ascia floralis. Bedburn, two { s and three 9 s, July 1902. 



Naturalist, 



