THE DIPTERA OF THE BRISTOL DISTRICT. 
61 
Tachydromia maculipes (Mg.) S.M., May. 
,, articulata (Mg.) Bristol, June. 
,, annulata (Fin.) Bristol, June. 
minuta (Mg-.) Bristol, June. 
ciliaris (Fin.) Bristol, June. 
Dolichopid.^: — Medium sized, bright green, and very spiny flies, 
generally found by the waterside. Some have the metatarsi 
'feathered,' which enables them to run freely on the water. For 
tables of the Dolichopidae, which are extremely numerous, see 
Verrall, Entomolog. Month. Mag., 1904. 
Psilopus platypterus (F.) S.M., July, and V.R.P. 
wiedmanii (Fin.) S.M., July. 
Dolichopus campestris (Mg ) S.M., July. 
confusus (Zett.) S.M., August. Male with dilated fore- 
tarsi. 
,, discifer (Stan.) S.M., July. The dilated joint of the male 
has a white spot. 
griseipeiinis (Stan.) Keynsham and Redland, also V.R.P. 
trivialis (Hal.) S.M., June and V.R.P. 
arbustorum (Stan.) S.M.,June. 
plumipes (Scop.) Batheaston (Blathwayt). 
ungulatus (L.) — • oeneus (Deg.) Freshford, common, and 
V.R.P. 
Pcecilobothrus nobilitatus (L.) S.M., July, fairly common. 
Chrysotus Icesus (W.) S M and Freshford, June. 
gramineus (Flu.) S.M., fairly common in June. 
Aryyra diaphana (F.) Upton Cheney, June, and V.R.P. 
Medeterus jaculus (Mg.) V.R.P. 
Liancalus virens (Scop.) V.R.P., running about in wet spots. 
Lonchopter i d^e — Small, pale flies with straight wing veins, 
which are slightly different in male and female. Sometimes common 
in spring. Larvae said to feed on the mycelium of fungi. Five out 
of the six British species occur in the district. 
Lonchoptera lutea (Pauz.) Keynsham, March. 
,, trilineata (Zett.) Leigh Woods, June. 
Jlavicauda (Mg.) S.M., March. 
lacustris (Mg.) S.M., March. 
tristis (Mg.) S.M., March. 
SECTION in. — proboscim:. 
Platypezid^e — Larvae occur in fungi. Of the six species only 
one is recorded from the district. 
Callimyia leptijormis (Fall.) Leigh Woods, Dale. 
