The file comprises notes on the distribution of particular moths and butterflies in Wales; correspondence, 1943-1994, concerning moths, flies, butterflies and beetles, their identification, habitats, distribution, the collection and mounting of specimens, and recommended books, including letters and enclosed articles from Cardiganshire entomologist, Philip (`Pip') Miles (9), 1956-1980, press cutting relating to spiders, typed lists, manuscript notes and printed articles on the subject of insect migration, 1950-1955, and newsletters from groups with interests in invertebrates, 1989-1996.