Abstract. P. Delforge.- The Orchids of the island of Lefkas (Nomos Lefkada, Nissia Ioniou, Greece) - Observations and additions to the cartography [Natural. belges (Orchid. 5) 73 (1992).- 155-176]. Recent studies on critical groups of Orchidaceae in the Ionian islands and elsewhere result in new systematic views and distributional revisions. Observations in Lefkas have permited to find 6 orchid species new for the island.- Ophrys attaviria, O. herae, O. phryganae, O. reinholdii, Orchis lactea and O. papilionacea. Lefkas has now certainly 38 and probably 39 orchid species. Four interspecific hybrids have also been found, bringing their number to 7 for the island. An updated list of species with discussion of their status and 25 distribution maps are given as well as the list of localities prospected between 4 and 9 April 1992.