This Fauna volume deals with the subfamily Eulophinae of the family Eulophidae  Chalcidoidea : Hymenoptera. The members of this subfamily are mostly parasitoids of immature stages of other insects while some are phytophagous. They are economically very important since many species keep the population of several insect pests under check, preventing them from reaching economic injury level. They are minute wasps which usually range in length from 1-4 mm. This volume contains 39 genera and 251 species. Among these two genera and 72 species are new to science.  It is hoped that this volume will not only help in the identification of various genera and species of Eulophinae occurring in the Indian subcontinent their distribution host relationships and affinities with other related species but also serve as an tool for undertaking biological control work against insect pests involving these insects.