IMiiQ-atc : Ditrhdiii Diptera. 279 



Brachyopa bicolor Fin. Bishop Aucklrtnd, one i, May 1901. 



Rhingia campestris Mjj-. Common. 



Volucella bombylans L. Witton, one c5 , July 1897: ShuU, one 9, Sept. 

 iqoo ; Gibsiile, one "?• 



Volucella bombylans var. plumata. Wearhead, one 9, Auy. 1901. 



Volucella bombylans var. (a) hasmorrhoidalis. Wearhead, one $ ,.^ 

 Aui4-. 1897. 



Volucella pellucens L. Common. 

 En'stalis aeneus Seop. Hesleden, one 9, Aug-. 1898. 



Eristalis tenax L. \'ery common. 



Eristalis intricarius L. Hesleden, eig-ht c? s and five 9 s, Au^-. 18991900. 



Eristalis arbustorum L. \'eiy common. 



Eristalis nemorum L. Hesleden, one d , .\uy. 1899; Wearhead, one 9, 

 Auii'. 1901. 



Eristalis pertinax Scop. \'ery common. 



Eristalis rupium F. Hesleden, one 6 and one 9. Aug-. 1898-1900; Gib- 

 side, one 9 ; Gibsonees, one 9 , Aug-. 1897 ; Wearhead, .six 9 , Aug. igoi. 



Eristalis horticola Deg. Gibsonees, one <J , Aug-. 1897; Hesleden, one (5 

 and two 9 s, July- Aug. 1899. 



* Myiatropa florea L. Hesleden, one 6 , Sept. 1900 ; Gibsonees, one 9 , 

 1897 ; Bishop Auckland (Greenhouse), one 9 , 19th April ; Bishop Auck- 

 land (Greenhouse), one 9 , -3rd May 1900. 



Helophilus pendulus Mg. Hesleden, four i s and two 9 s, Aug. -Sept. 

 1899; Wearhead, one 6 , Aug. 1901 ; Gibside, two 6 s, Aug". 1897. 



Merodon equestris var. narcissi F. Bishop Auckland, two i s, July 1901. 



Merodon equestris var. validus Mg. Bishop Auckland, two 6 s, June 1900. 



Criorrhina floccosa J^Ig. Bishop Auckland, two 9 s, June 1899-1900. 



Xylota segnis L. Common. 



Xylota lenta Mg. Bishop Auckland, one i, June 1899. 



Xylota sylvarum L. Bishop Auckland, one i, July 1901 ; Harperley, 

 one 9 , July 1900; Hesleden, one 9, Aug. 1900. 



Xylota abiens W. Gibsonees, one 6, Aug. 1897. 



Syritta pipiens L. Ver\' common. 



Chrysochlamys cuprea Scop. Hesleden, five 9 s, Aug. 1899. 



Arctophila mussitans ¥. Hesleden, five 6 s and one 9, Aug. 189S ; 

 Sluill, one 6 , Sept. 1900. 



Sericomyia borealis Fin. Gibside and Wearhead, twenty c$ s, Aug. 1S96 

 and 1 90 1. 



Sericomyia lappona L. Wearhead, one 6 , June 1901. 



Chrysotoxum arctuatum L. Hesleden, two 6s, Aug. 1899. 



Chrysotoxum bicinctum L. Hesleden, two 9 s, Aug. 1899. 



Fani. COXOPID.E. 



Myopa buccata L. Harperley, two (5 s and two 9 s, June 1900; BoUihope, 

 one 9 , June 1901 . 



Fam. TACHIXID.-E. 



Ceromasia spectabilis Mg-. Bishop Auckland, one ^ , July 1901. 

 Gymnochaeta viridis Fin. Escomb, one 6 , May 1897 

 ^ Parexorista fugax Rnd.? Bishop Auckland, two c5s(bred), Oct. 1899. 

 *Parexorista grossa R.>.S;R. Waskerley, one 6, July 1901. 

 Blepharidea vulgaris Fin. Bishop Auckland, two 9 s ; Harpei-ley, one 9 , 



May-Aug. 1 900-1 901. 

 Phorocera cilipeda Rnd. Bishop Auckland, one t' and one 9 , Aug. 1901. 

 i9<-'3 Ji'iy I. 



