A HISTORY OF SUSSEX Nepticula poterii, Stt. CIssbury, larvae not uncommon in leaves of Poterium san- guisorba — betulicola, Stt. Jhbots JVood, Fernhunt, Tilgate Forest — ignobilella, Stt. Brighton (Vine) — argentipedella, Z. Abbots IFood, abun- dant among birch — acetosas, Stt. Locally abundant. New- ynarket and racecourse hills near Brigh- ton, Cissbury, Hurston JVarren — plagicolella, Stt. Generally abundant among sloe in hedgerows and various species of Prunus in gardens — prunetorum, Stt. Abbots Wood, Goring ; locally abundant — turicella, H.S. Arundel Park, Abbots JVood, Slindon — basalella, H.S. Abbots IFood, Houghton Forest, Preston. Both this and the preceding species are doubtless gener- ally abundant among beech — angulifasciella, Stt. Arundel, Sompting ; abundant among wild rose — rubivora, Wck. Arundel, Amberley, Slin- don ; locally very abundant, the larvae feeding in leaves of Rubus cassius, espe- cially in damp shady places or when the leaves are more or less buried among grass and other herbage — agrimoniae, Frey. Abbots Wood, among Agrimonia eupatoria — atricollis, Stt. Arundel Park, abundant — arcuatella, H.S. Clapham Woods, abun- dant among wild strawberry — gratiosella, Stt. Brighton (Vine) — ulmivora, Fologne. Bramber, the larvae not uncommon in leaves of common elm — marginicolella, Stt. Generally abundant among common elm in hedgerows — alnetella, Stt. Hassocks, Tilgate Forest ■ — glutinosas, Stt. Hassocks — continuella, Stt. Abbots Wood (Vine) — serella, Stt. Chailey Conunon (Vine). Mines found on Ditchling Common and in Tilgate Forest in leaves of Potentilla tormentilla are no doubt the work of larv£ of this species, its ally N. tor- mentillella not having been found thus far in Great Britain Nepticula aeneofasciella, Stt. Abbots Wood, Arundel, Cissbury, Poling, Slindon ; larvae in Agrimonia eupatoria, Potentilla anser- ina (rarely), reptans and tormentilla — centifoliella, Z. Cissbury, larvae in leaves of Rosa rubiginosa sub-sp. micrantha, near Seaford in those of R. spinosissima — filipendulae, Wck. Downs near Brighton, Eastbourne, Steyning, Worthing ; larvae not uncommon in leaves of Spiraea filipendula — fragariella, Heyd. Arundel and Clapham Woods, a.r'!E in Fragariavesca; Balcombe, in Agrimonia eupatoria (see Tutt, Lep. Brit. i. 237) — gei, Wck. Arundel, Bramber, Polegate, Worthing; widely distributed and not uncommon, the larvae feeding in leaves of Geum urbanum and Rubus sp., especially cassius and corylifolius — aurella, Fb. Generally abundant, the larvae feeding in leaves of Rubus fruti- cosus — splendidissimella, H.S. Locally abun- dant, the larvae feeding in leaves of Rubus caesius ; Arundel, Filching, Goring, Polegate — luteella, Stt. Abbots Wood, Tilgate Forest — lapponica, Wck. Falmer Woods and Chailey (Vine) — regiella, H.S. Arundel Park, apparently ; very scarce Trifurcula immundella, Z. Abbots Wood, Burgess Hill; among broom — pallidella, Z. Ditchling Common — pulverosella, Stt. Mines of the larvje seem abundant in crab-apple generally in the county ; they have been ob- served at the following among other localities : Arundel, Ditchling Common, Wiggonholt DIPTERA Flies This list contains about 950 species out of the 3,000 odd species of Diptera at present known to be British. This is as large a list as any county at present gives. This satisfactory result is owing to the county having been worked at times by Mr. G. H. Verrall, the well known authority on British Diptera. It is through his friendship that I have been enabled myself to add many species to the list. The eastern part of the district has been well worked by the Rev. E. N. Bloomfield,
