G2 
THE DIPTERA OF THE BRISTOL DISTRICT. 
Pipunculid^ — Small, dark flies, with enormous eyes ; they are 
not usually common. They fly among short herbage, and the 
larvae are parasitic on Homoptera. 
Chalarus spurius (Fin.) S.M. and Bristol, in May. 
Verrallia pilosa (Zett.) V.R.P. 
,, vilosa (Ross.) Hanham, June. 
,, aucta (Fin.) University garden, Bristol, August. 
Pipunculus campestris (Ltr. ) S.M., September, and V.R.P. 
geniculatus (Mg.) S.M., September, and V.R.P. 
Syrphid^e — A large family of medium to large flies, with bright 
yellow and black markings. Many are fine hoverers. Many of 
the larvae feed on Aphids. 
Cnemodon vitripennis (Mg. ) Freshford, April ; Redland, June. 
Melangyna quadrimaculata (Verr.) Rare. Freshford, June. V.R.P. 
Paragus tibialis (Fal.) Nailsea. University garden, Bristol, July. The 
larvae are said to feed on root-Aphids ; but the flies are generally 
found associating with Halicti, which they closely resemble. 
Pipizella virens (F.) Freshford and Redland in May. 
maculipennis (Mg.) Redland, June, and V.R.P. 
Pipiza voctiluca (L. ) Nailsea and Freshford in May. Larvae feed 
on the apple-root Aphis (Shizoneura). See Board of Agriculture 
Leaflet 34. 
Orthoneura nobilis (Fal.) Taunton, June. 
The following five species are beautiful metallic green flies : — 
Lioy aster metallina (F.) Fairly common at S.M. in June. 
Chrysogaster splendens (Mg ) Taunton, June, and C.J.W. 
,, hirtella (Lw.) Freshford and Bitton, April. 
maequarti (Lw.) V.R.P. 
solstitialis (Fin.) S.M., June, and V.R.P. 
Chilosia. Medium to large mostly black flies, sometimes densely 
pubescent. Eye margins raised. Larvae in fungi, &c. 
Chilosia metadata (Fin.) Freshford, May. 
,, longula (Zett.) Bristol, July. 
,, seutellata (Fin.) Freshford, May ; Cheddar, September, and 
V.R.P. 
,, soror (Zett.) S.M., April. 
pulchripes (Lw.) S.M., August. 
variabilis (Pz.) Freshford, May. 
hoiiesta (Rnd.) V.R.P. 
intonsa (Lw.) Freshford, June. 
illustrata (Har.) S.M. and Cheddar, August. 
chrysocoma (Mg.) V.R.P. 
impressa (Lw.) Leigh Woods, August ; Freshford, May. 
albitarsis (Mg.) Freshford, July, and V.R.P. 
fraterna (Mg-) Bitton, August. 
,, mutabilis (Fin.) Freshford, May. 
vernalis (Fin.) Bristol, September. 
