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 A HISTORY OF NORFOLK TRICHOPTERA INiEQUIPALPIA Phryganeid^ Neuronia ruficrus, Scop. Phryganea grandis, L. Agrypnia pagetana, Curt. LiMNOPHIUD/E Colpotaulius incisus, Curt. Grammotaulius nitidus, MuU. — atomarius, F. Glyphotaelius pellucidus, Retz. Limnophilus rhombicus, L. — flavicornis, F. — marmoratus, Curt. — lunatus, Curt. — centralis, Curt. — afHnis, Curt. — auricula, Curt. — xanthodes, McLach. Norfolk Fens (Winter, fide McLachlan) — politus, McLach, Norfolk Fens (Mc- Lachlan) — griseus, L. — bipunctatus, Curt. Norfolk Fens (Mc- Lachlan) — extricatus, McLach. — Iuridus,Curt. Norfolk Fens {}Ach^ch?in) — sparsus. Curt. — fuscicornis, Ramb. Anabolia nervosa, Curt. Stenophylax stellatus, Curt. — concentricus, Zett. — vibex. Curt. Norfolk (Curtis) Halesus radiatus. Curt. — digitatus, Schrank. LiMNOPHiLiDi^ {continued) Drusus annulatus, Steph. Chsetopteryx villosa, F. SericostomatiDj^ Notidobia ciliaris, L. Gofira pilosa, F. Silo pallipes, F. — nigricornis, Pict. Brachycentrus subnubilus, Curt. Lepidostoma hirtum, F. .ffiQUIPALPIA Leptocerid^ Berjea pullata. Curt. Odontocerum albicorne. Scop. Leptocerus bifasciatus, L. — fulvus, Ramb. Fens (McLachlan) Mystacides azurea, L. CEcetis furva, Ramb. Norfolk Fens (Win- ter fide McLachlan) HYDROPSYCHIDiE Hydropsyche angustipennis. Curt. Plectronemia conspersa. Curt. Polycentropus flavomaculatus, Pict. Holocentropus dubius, Ramb. Fens (Mc- Lachlan) — picicornis, Steph. Tinodes waeneri, L. Ecnomus tenellus, Ramb. Fen district (Winter /(f^ McLachlan) RHYACOPHILIDiB Rhyacophila dorsalis. Curt. HYDROPTILIDiE Agraylea multipunctata, Curt. HYMENOPTERA The sawflies of the following list have mostly been collected in the neighbourhood of Norwich ; but a few have been obtained elsewhere by Messrs. F. Norgate and E. A. Atmore. Doubtless much more could be done in this group by working the eastern part of Norfolk. There are a few notices in Paget's Natural History of Yarmouth, Curtis's British 'Entomology and Farm Insects, and Stephens's Illustrations of British Ento- mology, which have been used. The economy of the sawflies is extremely interesting. They are, in the larval state, vegetable feeders. The majority feed on the outside of the leaf, but a few are leaf-rollers, some mine the leaves, others form galls on the leaves of various species of willow and on poplar, and two or three make woolly galls on the young shoots of willows. In some species the male fly is very rare, and in a few instances 94