Leucophasia sinapis, Linn. (Wood White butterfly). Scarce near Buckingham ; also found by the Rev. C. F. Thornewill near Whittlebury Forest ; formerly at Black Park and Claydon ; very local Colias hyale, Linn. (Pale -Clouded Yellow butterfly). A very uncertain species, and formerly never taken in the county, but found near Chorley in the year 1900 and near Chesham and Chalfont Road in 1901
edusa, Linn. (Clouded Yellow butterfly). Very uncertain ; found at Buckingham, Chesham, High Wycombe, Black Park and many other places in certain years. In 1877 it was abundant at Marlow, accompanied by its beautiful pale variety, helice
Gonepteryx rhamni, Linn. (Brimstone butterfly). Usually common, but seen principally in the spring after hybernation Thecla betulse, Linn. (Brown Hairstreak butterfly). Two specimens were taken many years ago by the Rev. H. H. Crewe near Claydon. Most probably it may still be found on the borders of woods in the northern half of the county
pruni, Haw. (Dark Hairstreak). Several specimens were taken about the blossoms of privet (Ligustrum vulgare) at Linford Wood on 4 July, 1874, by Mr. W. Thompson of Stantonbury near Stoney Stratford. This also is a species likely to be found in woods in the northern portion of the county, since its principal haunts are in adjoining counties
w-album, Knoch (White -letter Hairstreak). Buckingham, Chesham, Chalfont Road. About wych-elms. A very uncertain species, abounding in one season, scarce for many successive years
quercus, Linn. (Purple Hairstreak). Black Park, Claydon, Wendover ; apparently in all oak woods
rubi, Linn. (Green Hairstreak). Halton ; also common towards the Chiltern Hills ; among broom and genista Chrysophanus phlaeas, Linn. (Small Copper butterfly). Generally distributed and common Polyommatus agestis, Hüb., astrarche, St.C. (Brown Argus). Abundant at High Wycombe ; also at Long Down and towards the slopes of the Chilterns ; usually upon chalk hills and downs
alexis, Hb., icarus, St.C. (Common Blue butterfly). Abundant everywhere in fields and on hillsides Polyommatus adonis, Hb., bellargus, St.C. Clifden Blue). A very local chalk hill species ; recorded on the slopes of hills on the chalk by the Rev. Joseph Greene ; and the Hon. Charles Rothschild has taken it on the borders of the county toward Tring
corydon, Scop. (Chalk-hill Blue). Abundant at High Wycombe, Long Down and elsewhere on chalk slopes, feeding upon Hippocrepis
argiolus, Linn. (Holly Blue). Buckingham, Aylesbury, Taplow, Halton, Black Park, also towards the Chiltern Hills, its larva feeding on the flowers and berries of holly, ivy, Rhamnus and other shrubs
alsus, Sch., minima, St.C. (Bedford Blue). In sheltered hollows of chalk hills about Wendover, Long Down, the Chilterns and elsewhere ; in some seasons very plentiful
arion, Linn. Recorded at Clifden by Lewin in 1795 Nemeobius lucina, Linn. (Duke of Burgundy Fritillary). Halton ; plentiful near High Wycombe; found in open woods, its larva feeding on the leaves of primrose
Apatura iris, Linn. (Emperor butterfly). Several specimens were met with at Claydon by the Rev. H. H. Crewe many years ago. It doubtless still exists in the woods in the north of the county, flying round the oak trees in July, its larva feeding on broad-leaved sallows
Limenitis sibylla, Linn. (White Admiral). Common at Black Park in the middle of the last century, and it was here that its beautiful larva was found in 1851 feeding on the honeysuckle. This rich locality has long been closed to entomologists, and it is quite uncertain whether this most interesting butterfly justly celebrated for the grace of its motions still exists there
Vanessa c-album, Linn. (Comma butterfly). Formerly found in that portion of the county which borders Whittlebury Forest and probably then in other districts ; but this is a species which for many years has retreated westward and abandoned many of its former localities polychloros, Linn. (Large Tortoiseshell). Buckingham, High Wycombe, Chesham ; about elm ; local and rather irregular in its appearances
urticæ, Linn. (Common Tortoiseshell). Abundant everywhere in gardens, fields and waysides, its larva feeding gregariously on nettles
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