A Revision of the British Symphyla

SUMMARY The collection, occurrence and geographical distribution of the British Symphyla is discussed. Methods of making temporary and permanent mounts suitable for taxonomic study are outlined. Eight species of Scutigerellidae, belonging to three genera are described, one species being new to science and four new to the British Isles. Six species of Scolopendrellidac belonging to three genera, one species being new to science and one new to the British Isles are described. Symphyla vary considerably in size and chaetotaxy and because of this as many specimens as possible from a wide range of localities have been studied; in all, specimens from 317 localities. This has enabled the range of variation to be expected in each species to be outlined.