During Antarctic austral summer 1972-1973, an ecological and taxonomical investigation was carried out, as a part of program of the 14th Japanese Antarctic Expedition. This paper presents preliminary, some ecological and floral note on algae found in the ice-free area of the coastal region of Lutzow-Holm Bay. Main results are as follows ; i) a noteworthy filamentous green alga Oedogonium sp. (probably new to science) is newly recorded from several inland freshwater lakes of this ice-free region(West Ongul, Skarvs Nes, and Skallen) ; ii) colored snow composed of such algae as Scotiella, Oocystis and certain cryophytic algae is firstly recoginzed from the Japanese territory of Antarctica ; iii) notes on some lithophytic, endolithic and hypolithic algae are described ; iv) algae of the following genera were isolated from the sandy and silty soil of this region ; Gloeothece, Aphanocapsa, Synechococcus, Phormidium, Nostoc, Anabaena, Tetracystis, Chlorosarcina, Characium, Cylindrocystis, Monodus, Pleurochoris, Heterothrix, Heterococcus, and certain species of diatoms.