58 THE DIPTERA OF THE BRISTOL DISTRICT. 
Sargns flavipes (Mg.) September, S.M., also V.R.P. 
,, cuprarius (L.) V.R.P. , Batheaston (Blathwayt). 
irridiatus (Scop.) S.M., June. Sometimes common. 
bipunctatus (Scop.) Bristol, September. Shepton-Montagu 
(Verrall). 
Microchrysa polita (L.) A brilliantly green little fly, common in 
gardens. 
,, flavicornis (Mg.) C.J.W. 
Berts clavipes (L.) V.R.P. 
,, vallata (Forst.) S.M. and Redland, July to October. Have 
bred the fly from larvae in decayed Narcissus bulb. 
,, chalybiata (Forst.) S.M. , May to July. 
,, morrisii (Dale) Has occurred at Porlock (Verrall). 
Metallic little flies, with 6 to 8 spines on the scutellum. B. vallata 
closely mimics a Sawfly. 
Tabanid^e — The Gadflies ; the females are bloodsuckers. The 
larvae occur in rotten wood or leaves, some are predaceous. 
Hcematopota pluvialis (L.) 4 The Cleg ' ; the females are too com- 
mon everywhere : the males, easily distinguished by the eyes 
meeting on the front of the head, are very rare ; they are said to 
dance in the air early in the morning. 
Therioplectes micans (Mg.) Wellington (Blathwayt). 
,, tropicus (Mg.) Freshford, July, and Shapwick, May, also 
V.R.P. 
Atylotus fulvus (Mg.) Wellington (Blathwayt). 
Tabanus bovinus (L.) V.R.P. and Wellington (Blathwayt). 
,, sudeticus (Zett.) V.R.P. 
,, autumnalis (L.) Redland, July, and V.R.P. 
bromius (L.) Leigh Woods, August, and V.R.P. 
Chrysops ccecutiens (L.) S.M., August, and V.R.P. 
relicta (Mg.) V.R.P. 
In life these Gadflies have most beautiful golden eyes. 
Leptid^e — Long legged, rather slender flies, medium sized to 
large. 
Leptis scolopacea (L.) S.M. and Cheddar, May. I have found the 
transparent-looking larvae in damp moss in December ; 
they pupated at the beginning of May, and are said to feed 
on earthworms. The wings of this species are spotted. 
,, iringaria (L.) S.M. Common. Var. nigriventris at Cheddar. 
,, lineola (F. ) S.M., July, rare, also V.R.P. 
Chrysopilus cr /status (V err.) S.M. Fairly common. 
,, aureus (Mg. ) S.M., August, rare, also V.R.P. 
Atherix ibis (F.) Freshford, June, rare. The females unite in 
masses hanging over the water. 
Xylophagus ater (F.) Leigh Woods. Very rare. 
