A HISTORY OF DURHAM 



Eristalis tenax, L. 



intricarius, L. 



arbustorum, L. 



nemorum, L. 



pertinax, Scop. 



rupium, F. 



horticola, Deg. 

 Myiatropa florea, L. 

 Helophilus pendulus, Mg. 

 Merodon equestris var. narcissi, 



F. 



equestris var. validus, Mg. 



CONOPIDJE 

 Myopa buccata, L. 



TACHINID.E 



With the exception of Onesia and Sarcopkaga, most of the Tachtnidte are not common. 

 They are, during the larval stage, mostly parasitic in the larvae of Lepidoptera, and the 

 breeding cages of local lepidopterists have been the chief source of supply. 



Baccha elongata, F. 

 Sphegina clunipes, Fin. 

 Ascia podagrica, F. 



floral is 



Brachyopa bicolor, Fin. 

 Rhingia campestris, Mg. 

 Volucella bombylans, L. 



bombylans var. plumata.DeG. 



bombylans var. (a) haemor- 



rhoidalis, Ztt. 



pellucens, L. 

 Eristalis aeneus, Scop. 



Criorrhina floccosa, Mg. 

 Xylota segnis, L. 



lenta, Mg. 



sylvarum, L. 



abiens, W. 

 Syritta pipiens, L. 

 Chrysochlamys cuprea, Scop. 

 Arctophila mussitans, F. 

 Sericomyia borealis, Fin. 



lappona, L. 

 Chrysotoxum arctuatum, L. 



bicinctum, L. 



Ceromasia spectabilis, Mg. 

 Gymnochaeta viridis, Fin. 

 Parexorista fugax, Rnd. I 

 grossa, B. and B. 

 Blepharidea vulgaris, Fin. 

 Phorocera cilipeda, Rnd. 

 Aporomyia dubia, Fin. 

 Somolia simplicitarsis, Ztt. 

 Melanota volvulus, F. 

 Olivieria lateralis, F. 



Micropalpus vulpinus, Fin. 



pictus, Mg. 

 Erigone rudis, Fin. 



consobrina, Mg. 

 Plagia ruralis, Fin. 

 Urophylla seria, Mg. 

 Digonochaeta setipennis, Fin. 

 Thryptocera crassicornis, Mg. 

 Siphona cristata, F. 



geniculata, Deg. 



Stevenia maculata, Fin. 

 Brachycoma devia, Fin. 

 Cynomyia alpina, Ztt. 



mortuorum, L. 

 Onesia sepulchralis, L. 



cognata, Mg. 

 Sarcophaga carnaria, L. 



atropos, Mg. 



cruentata, Mg. 



Of the remaining numerous families, the Muscidie proper, the nearer relations of the 

 House-fly, are well represented, most of them very common. The list of Anthomyds is, probably, 

 very incomplete, and the same applies to the Acalypterous Muscides. The more noticeable 

 species are, among the Antkomyidiz, Cienosia elegantula and tricolor and Lisporephala alma. 

 The red-legged variety of Fucellia (F. maritima) was fairly common on the shore, 1 900, but it 

 has not been observed since. Helomyza ustulata is a very rare species in this county. The 

 smaller Muscidte, sensu lato, have been very little collected, and there is nothing in the 

 following lists calling for further notice. 



Stomoxys calcitrans, L. 

 Haematobia stimulans, Mg. 

 Pollenia vespillo, F. 



rudis, F. 



Mysospila meditabunda, F. 

 Graphomyia maculata, Scop. 

 Musca domestica, L. 



corvma, F. 



Polietes lardaria, F. 



albolineata, Fin. 

 Hyedotesia incana, W. 



lucorum, Fin. 



marmorata, Ztt. 



serva, Mg. 



nivalis, Rnd. 



obscurata, Mg. 



variabilis, Fin. 



longipes, Ztt. 



umbratica, Mg. 



MUSCID.E 



Cyrtoneura stabulans, Fin. 



pabulorum, Fin. 

 Morellia simplex, Lw. 



hortorum, Fin. 

 Mesembrina meridiana, L. 

 Pyrellia cyanicolor, Ztt. 



lasiophthalma, Mcq. 



ANTHOMYID^E 



Hyedotesia lasiophthalma, Mcq. 



rufipalpis, Mcq. 



populi, Mg. 



variegata, Mg. 



palida, F. 

 Alloeostylus flaveola, Fin. 

 Mydea vespertina, Fin. 



nigritella, Ztt. 



urbana, Mg. 



tincta, Ztt. 



pagana, F. 



136 



Protocalliphora groenlandica, Ztt. 

 Calliphora erythrocephala, Mg. 



vomitoria, L. 

 Euphoria cornicina, F. 

 Lucilia caesar, L. 



sericata, Mg. 



ruficeps, Mg. 



Mydea impuncta, Fin. 



separata, Mg. 

 Sphecolyma inanis, Fin. 

 Spilogaster nigrinervis, Ztt. 



duplicata, Mg. 



communis, Dsv. 



duplaris, Ztt. 



ciliatocosta, Ztt. 

 Limnophora compuncta, W. 



solitaria, Ztt. 

 Melanochila riparia, Fin. 



