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 INSECTS taken on Bridewell near Millook. C. troglodytella was found by Atmore among Inula dysenterica about Penzance. C. argentula has with difficulty been bred from larvae on the seeding heads of yarrow from Ruan Lanihorne. C. laripennella has been found by Jenkinson on St. Agnes, Scilly. The larvae of C. murlnlpennella were in July, 1902, abundant on Luzu/a campestns near Trebartha. Those of C. caespititiella are usually common all over the county on seeding rushes. Larvae of C. alticolella were fairly common on the fruits of several clumps of Juncus supinus near Millook in September, 1905. Elachista alblfrontella has been taken about the Helford river and about Penzance, and E. luticomella by Atmore at Penzance only. C. atricomella was reported from East Cornwall by Marshall. Two specimens of E. subnigrella were taken in 1890 by Marryat near Looe. E. nigrella was taken by Marshall in the east, and doubtfully by Jenkinson at Scilly. E. bedellela occurs on the downs near Chapman Head, west of Millook. E. obscure/la has been taken in meadows at Grampound. E. zonariella occurs on marshy land at Par. E. megerlella was fairly common near St. Ewe in 1901. E. disertella has been obtained by Allen near Poundstock. E. dispunctella has been bred with difficulty from larvae on Brachypodium sylvaticum gathered near Mawgan Forth. E. rufocinerea is apparently the commonest member of the genus in the south-east of the county, but is scarce elsewhere. E. cygnipennella is generally distributed along the south as far as Penzance. The larvae of Anybia epilobiella are often common in the leaves of enchanter's nightshade about Truro and elsewhere. Chrysoclista aurtfrontella is widespread but probably local ; it has been taken at Launceston, Liskeard and Truro. C. atra was reported by Marshall from East Cornwall, and is fairly common about Penzance. Mompba subbistrigella has been taken at Bishop's Wood, Truro, but larvae are not infrequently found in the seed-pods of Epilobium montanum that evidently belong to this species. Heliozela sericiella was plentiful at Maenporth in 1899, and has been taken beyond Scawswater, Truro. Larvae were common in blotches on the leaves of dogwood at Bodmin in 1901, which probably belonged to Antispila pfeifferella. Perittia obscuripunctella is common in over- grown hedges about Calstock, and the blotches made by its larvae in the leaves of honeysuckle are not infrequently seen as far west as Falmouth and St. Agnes. In February, 1900, the webs of the larvae of Scythris grandipennis were abundant among some furze on the border of Carnon Downs. Specimens of the moth have been taken throughout the county. Endrosis lacteella is very common in houses almost everywhere. Schreckensteinia festaliella is fairly common among bramble-covered hedgebanks and in open thickets with tangled undergrowth about St. Tudy and Wadebridge. Epermenia chaerophyllella is common about Hayle. PLUTELLIDAE Prays curtisellus is widely scattered but apparently nowhere common in the east of the county. Yponomeuta evonymellus was reported by Marshall as frequent about Botus-Fleming. Y. cognatellus was taken by Dale near the Logan rock, and by Jenkinson at Tresco. Y. padellus is generally distributed and often abundant ; it occurs at Scilly. Y. plumbellus is not infrequent in South-east Cornwall and occasionally elsewhere. Orthotaelia sparganella was taken by Cocks at Falmouth, and still occurs at Swanpool. Cerostoma caudella has been taken occasionally round Truro. C. xylostella is usually abundant but irregular in the east, about Truro, and around Penzance. C. nemorella has been captured by Baily near Penzance. C. lucella is rare, and has only been taken twice at Calstock. C. alpella has been taken near Bude. C. sylvella is scarce between the Tamar and Bodmin Moors. C. caste/la is generally distributed and common about woods west to Liskeard and Looe. C. radiatella occurs commonly in the eastern woods, and occasionally about Truro. C. vittella is usually common in country lanes and thickets in the east, and appears to die out about St. Austell. The larvae of Plutella porrectella were found on sweet-rocket by Baily at Paul, who records an emergence on 5 May. P. cruciferarum is abundant in most seasons all over the county. Glyphipteryx fuscoviridella is very common in the west, but scarce in the east, and at least local in the north. G. thrasonella seems to be everywhere plentiful where rushes grow. G. fischeriella was common about St. Germans in 1902. Choreutis myllerana was taken by Cocks at Falmouth and by Atmore at Penzance. Simaethis parlana was taken by Marshall in the east of the county. S. fabrictana is very common at times as far west as Doublebois. TINEIDAE Nepticu/a pygmaeella was obtained by Marshall near Botus Fleming. The larvae are occasionally found about Truro. N. atrlcapitella has been bred from larvae collected in oak leaves at Doublebois, N. anamalella from larvae in rose leaves, and N. viscerella from elm leaves, taken near Truro. N. oxyacanthella was reported by Marshall from East Cornwall, and has been bred from hawthorn leaves at Liskeard. The larvae of N. aurella are abundant in bramble leaves everywhere. N. gratiosella has been bred from leaves of the whitethorn. Larvae of N. marginicolella are common in the leaves of the elm about Truro, Falmouth and Penzance. N. alnetella has been recorded from St. Germans. I 225 29