THE DIPTERA OF THE BRISTOL DISTRICT. 57 
Tipida gigantea (Schr.) Freshford. June and V.R.P. Our largest 
dipteron. 
,, rufina (Mg.) S.M. May and V.R.P. 
scripta (Mg.) S.M. September and V. R. P. 
hortensis (Mg.) Lynmouth. June. 
hortulanus (Mg.) V.R.P. 
,, marmorata (Mg.) S.M. June and V.R.P. 
vernalis (Mg.) S.M. Very common. 
lateralis (Mg.) Bitton. April and V.R.P. 
oleracea (L. ) Very common everywhere, and a great plague. 
paludosa (Mg.) Bitton, common. S.M. , very common. 
,, ochracea (Mg.) V.R.P. 
Xiphtira nigricornis (Mg.) V.R.P. and Stroud C.J.W. 
Ctenophoara pectinicornis (L.) V.R.P. Distinguished by the beauti- 
ful comb-like antennae of the male. 
RHYPHiDiE — Small, rather gnat-like flies with spotted wings, 
common on windows. The males often perform aerial dances in 
summer evenings. 
Rhyphus fenestralis (Scop.) S.M. Common (wings spotted to the 
tip). 
,, punctatus (F.) S.M. Common (wings clear at the tip). 
SECTION II.— BRACHYCERA. 
Stratiomyid^e — Small to large flies, many have brilliant metallic 
colours. 
Chloromyia formosa (Scop.) S.M. I have found the larvae in a 
hollow bean stalk. 
Chorisops tibialis (Mg.) C.J.W. and Batheaston (Blathwayt). 
Pachygaster atra (Panz.) V.R.P. and Langport (Dale). 
,, leachii (Curt.) Bristol, in the garden of the University, 
August ; also Wincanton (Verrall). 
Nemotelus pantherinus (L.) Stroud (Wainwright). 
,, uliginosiis (L.) Minehead (Blathwayt). 
Oxycera formosa (Mg.) V.R.P. 
,, pulchella (Mg.) Batheaston (Blathwayt). 
trilineata (F.) Puddimore-Milton. 
Stratiomys chamceleon (L.) Highbridge and S.M., also V.R.P. 
Handsome black and orange flies ; the larvae live in 
water, and both larvae and pupae have a long anal 
breathing tube. 
,, riparia (Mg.) Wellington (Blathwayt). 
,, furcata (F.) Burnham (Blathwayt). 
,, potamida (Mg.) Ashley Down, Bristol, and C.J.W. 
Odontomyia viridula (F.) Minehead (Blathwayt). 
Chrysonotus bipunctatus (Scop.) V.R.P. and Batheaston (Blathwayt). 
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