_List of the Species or Varieties of Lepidoptera which, so far as at present known, are confined to the British Islands. (The figures show the dates when the species was first described. Species added since the first edition are marked with an asterisk.)_ DIURNI. 1. POLYOMMATUS DISPAR. "The large copper." This fine insect, once common in the fens, but now extinct owing to extensive drainage, is generally admitted to be peculiar to our island, at all events as a variety or local form. Its continental ally differs constantly in being smaller and in having smaller spots; but the difference, though constant, is so slight that it is now classed as a variety under the name of _rutilus_. Our insect may therefore be stated to be a well-marked local form of a continental species. 2. Lycaena astrarche, _var._ ARTAXERXES. This very distinct form is confined to Scotland and the north of England. The species of which it is considered a variety (more generally known to English entomologists as _P. agestis_) is found in the southern half of England, and almost everywhere on the continent. BOMBYCES. 3. Lithosia complana, _var._ SERICEA. North of England (1861). 4. Hepialus humuli, _var._ HETHLANDICA. Shetland Islands (1865). A remarkable form, in which the male is usually yellow and buff instead of pure white, as in the common form, but exceedingly variable in tint and markings. 5. EPICHNOPTERYX RETICELLA. Sheerness, Gravesend, and other localities along the Thames (1847); Hayling Island, Sussex. 6. E. pulla, _var._ RADIELLA. Near London, rare (1830?); the species in Central and Southern Europe. (Doubtfully peculiar in Mr. Stainton's opinion.) {348} NOCTUAE. 7. Acronycta euphorbiae, _var._ MYRICAE. Scotland only (1852). A melanic form of a continental species. 8. AGROTIS SUBROSEA. Cambridgeshire and Huntingdonshire fens, perhaps extinct (1835). The _var._ _subcaerulea_ is found in Finland and Livonia. 9. Agrotis candelarum _var._ ASHWORTHII. South and West (1855). Distinct and not uncommon. 10. Luperina luteago, _var._ BARRETTI. Ireland (1864). 11. Aporophyla australis, _var._ PASCUEA. South of England (1830). A variety of a species otherwise confined to South Europe. 12. Hydraecia nictitans, _var._ PALUDRIS. GEOMETRAE. 13. Boarmia gemmaria, _var._ PERFUMARIA. Near London and elsewhere. A large dark variety of a common species. 14. *B. repandata, _var._ SODORENSIUM. Outer Hebrides. 15. *Emmelesia albulata, _var._ HEBRIDIUM. Outer Hebrides. 16. *E. albulata, _var._ THULES. Shetland Islands. 17. *Melanippe montanata, _var._ SHETLANDICA. Shetland Islands. 18. *M. sociata, _var._ OBSCURATA. Outer Hebrides. A dark form. 19. Cidaria albulata, _var._ GRISEATA. East of England (1835). A variety of a species otherwise confined to Central and Southern Europe.