60 
THE DIPTERA OP THE BRISTOL DISTRICT. 
Oncodes pallipes (Latrl.) This fly seems extremely rare, I have only 
met with one specimen, a male, resting- on a sprig- of Rock Rose 
on Leigh Down, in August. Verrall reports it from Wells. 
Acrocera globulus (Pz.) V.R.P. and Shepton Montagu (Verrall). 
Empid^e — Medium and small flies, with long- bodies and legs, 
mostly hairy. Distinguished by the absence of the axillary lobe of 
the wing. They are all very rapacious. 
Hybos grossipes (L.) S.M., September, and V.R.P. 
Cyrtoma spuria (Fin.) Freshford, October. 
,, melcena (Hal.) S.M., May. 
Rhamphomyia sulcata (Fin.) Bristol, also Freshford, May. 
,, fuscipennis (Zett.) Bleadon, August. 
filata (Zett.) S.M., May. 
Empis tesselata (F.) Very common everywhere. 
livida (L ) Very common everywhere. I have noticed the 
singular habit of the male giving a prey to the female 
before coupling (see H. Hamm, Ent. Month. Mag., 1907). 
,, chioptera (Fin.) S.M., May. 
,, pennipes (L.) Bitton, Cheddar, and Freshford, June ; also 
V.R.P. 
,, nigritarsis (Mg.) S.M., May. 
,, decora (Mg.) Cheddar, July. 
,, brunnipennis (Mg.) Cheddar, July. 
vernalis (Mg.) Cheddar, July. 
,, lutea (Mg. ) Gloster, July, and C.J.W. 
,, stercorea (L.) V.R.P. 
,, punctata (Mg.) Freshford, May, and Redland, June. 
,, trigramma (Mg.) S.M., May, and V.R.P. 
Pachymeria femorata (F.) Ashton and Freshford, May. 
Hilara niveipennis (Zett.) S.M., June. 
,, nigrina (Fin ) Bristol, June. 
,, maura (F.) Common throughout the district. 
pilosa (Zett.) S.M., July. 
,, fuscipes (F.) V.R.P. 
In Hilara the fore metatarsus of the male is generally expanded 
into a disk. Said to envelop their prey in silken threads 
(M. Howlett, Entomol. Month. Mag., Oct., 1907). 
Trichina flavipes (Mg.) Freshford, October. 
Microphorus anomalus (Mg.) Leigh Woods, June. 
CEdalea flavipes (Zett.) Cheddar, July. 
Ocydro?nia glabricula (Mg. ) S.M., May to September. 
Tachypeza nubila (Mg.) S.M., June. 
Tachista a?inuli?nana (Mg.) V.R.P. 
,, arrogans (L.) S.M., June. This species closely resembles 
an Hemipteron, both in appearance and in habit of 
dodging to the under side of the leaf when pursued. 
