An important collection of Collembola from Romania contained six species. One of them is new - Onychiurus orghidani n.sp. found in one cave of Oltenia. The presence of Onychiurus boldorii Denis in Romania is reported for the first time, and the discovery of a large number of Beckerella spelaea Ionesco made it possible to place this species in the genus Xenylla. Finally, additions are made to the known geographic distributions of Mesachorutes ojcoviensis Stach and Lepidocyrtus serbicus Denis.