A HISTORY OF DURHAM 



Baccha elongata, F. 

 Sphegina clunipes, Fin. 

 Ascia podagrica, F. 



— floralis 



Brachyopa bicolor. Fin. 

 Rhingia campestris, Mg. 

 V'olucella bombylans, L. 



— bombylans var.plumata,DeG. 



— bombylans var. (a) hasmor- 



rhoidalis, Ztt. 



— peUucens, L. 

 Eristalis aeneus, Scop. 



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. 



CONOPIDiE 

 Myopa buccata, L. 



Criorrhina floccosa, Mg. 

 Xylota segnis, L. 



— lenta, Mg. 



— sylvarum, L. 



— abiens, W. 

 Syritta pipiens, L. 

 Chrysochlamys cuprea, Scop. 

 Arctophila mussitans, F. 

 Sericomyia borealls, Fin. 



— lappona, L. 

 Chrysotoxum arctuatum, L. 



— bicinctum, L. 



TACHINID^ 



With the exception of Onesia and Sarcophaga, most of the Tachlnidce are not common. 

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

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



Ceromasia spectabilis, Mg. 

 Gymnochxta viridis, Fin. 

 Parexorista fugax, Rnd. J 

 — 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 Muscida proper, the nearer relations of the 

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

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

 species are, among the Anthomyida^ Ccsnoi'ta elegantula and tricolor and Lhporephala alma. 

 The red-legged variety of FucelUa (F. maritima) was fairly common on the shore, 1900, but it 

 has not been observed since. Helomyxa uitulata is a very rare species in this county. The 

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

 following lists calling for further notice. 



Stomoxys cakitrans, L. 

 Hasmatobia stimulans, Mg. 

 Pollenia vespillo, F. 



— rudis, F. 



Mysospila meditabunda, F. 

 Graphomyia maculata, Scop. 

 Musca domestica, L. 



— corvrna, F. 



Polietcs lardaria, F. 



— albolineata, Fin. 

 Hyedotesia incana, W. 



— lucorum. Fin. 



— marmorata, Ztt. 



— scrva, Mg. 



— nivalis, Rnd. 



— obscurata, Mg. 



— variabilis. Fin. 



— longipcs, Ztt. 



— umbratica, Mg. 



MUSCID^ 



Cyrtoneura stabulans. Fin. 



— pabulorum, Fin. 

 Morellia simplex, Lw. 



— hortorum, Fin. 

 Mesembrina meridiana, L. 

 Pyrellia cyanicolor, Ztt. 



— lasiophthalma, Mcq. 



ANTHOMYID^ 



Hyedotesia lasiophthalma, Mcq. 



— rufipalpis, Mcq. 



— populi, Mg. 



— varicgata, Mg. 



— palida, F. 

 AlloEostylus flaveola. Fin. 

 Mydca vespertina, Fin. 



— nigritella, Ztt. 



— urbana, Mg. 



— tincta, Ztt. 



— p.agana, F. 



136 



Protocalliphora groenlandica, Ztt. 

 Calliphora erythrocephala, Mg. 



— vomitoria, L. 

 Euphoria cornicina, F. 

 Lucilia ca;s.ar, L. 



— sericata, Mg. 



— ruficeps, Mg. 



Mydca impuncta. Fin. 



— separata, Mg. 

 Sphecolyma inanis, Fin. 

 Spilogastcr nigrincrvis, Ztt. 



— dupllcata, Mg. 



— communis, Dsv. 



— duplaris, Ztt. 



— ciJiatocosta, Ztt. 

 Limnophora compuncta, W. 



— solitaria, Ztt. 

 Mclanochila riparia, Fin. 



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