70 
THE DIPTERA OF THE BRISTOL DISTRICT. 
Ophyra leucostoma (W.) S.M., common. Larvae in decaying wood. 
,, anthrax (Mgf.) V.R.P. 
Drymia hamata (Fin.) V.R.P. 
Trichopticus pulcher (Mde.) S.M., April. 
Hydrophoria conica (W.) Common. 
Hylemia variata (Fin.) V.R.P. 
strigosa (F.) Common, viviparous, larvae in dung". 
Eustalomyia festiva (Zett ) Painswick, C.J.W. Parasitic on Pem- 
phredon. 
Anthomyia pluvialis (L.) Frequent, but local. 
radicum (L.) Very common, as larvae, in radishes. 
Chortonhila albescens (Zett.)) ^ . r . „ . . TT 7 . , 
1 . ' i>y 4.4. \ >owintord. Parasitic on HaLictus. 
,, trapezina (Zett.) J 
sepia (Mg.) V.R.P. 
Phorbia floecosa (Mcq.) V.R.P. 
,, cilicrura (Rnd.) C.J.W. 
,, cepetorum (Mde.) Bristol. Larvae in onions. 
Pegomyia silacea (Mg.) V.R.P. 
Homalomyia fuscula (Fin.) V.R.P. 
,, canicularis (L.) Very common everywhere. 
,, incisarata (Zett.) V.R.P. 
,, coracina (Lw.) V.R.P. 
Caricea tigrina (F.) S.M. and V.R.P. ; is fiercely predaceous on 
other flies. 
humilis (Mg.) V.R.P. 
Lispe tentaculala (Deg.) S.M., frequents puddles, running on the 
water and preying upon larvae of Chironomus, &c. 
Cordylurid^e — Medium sized, densely hairy flies, mostly yellow 
or grey ; they are very predaceous. 
Cordyhira pubera (F.) V.R.P. 
Paralleloma albipes (Fin.) Bully, Glos., C.J.W. 
Amaurosoma flavipes (Fin.) S.M. Bred from larvae in dock leaves. 
Norellia spinimana (Fin.) S.M., August, and V.R.P. 
Scatophaga. The dung flies ; they are covered with a pile of yellow 
hair, and are very voracious, being often seen sucking flies much 
bigger than themselves. 
Scatophaga ordinata (Beck.) S.M., May- 
,, maculipes (Zett.) S.M., May. 
,, suilla (F.) S.M. , October. 
inquinata (Mg.) V.R.P. 
anal is (Mg.) V.R.P. 
lutaria (F.) Common. 
,, merdaria (F.) Common. 
,, stercoraria (L. ) Very common everywhere. 
squcdida (Mg.) V.R.P. 
