The male organ of British and continental Nelima silvatica (Simon) and of N. doriae (Canestrini) is compared. That of the British examples is found to be identical with the continental species, but differs considerably from that of N. doriae. External characters of British N. silvatica are compared with those of N. doriae and with the British species of Leiobunum. The habitats and range of N. silvatica in the British Isles are discussed. It is shown to be the dominant species on Skokholm Island.