ISRAEL JOURNAL OF ZOOLOGY Vol. 16, 1967, pp. 166- 169 LEITER TO THE EDITOR A TENTATIVE LIST OF IMMIGRANTS VIA THE SUEZ CANAL H. STEINITZ Department of Zoology, The Hebrew University of Jerusalem When the Suez Canal was opened in 1869 the waters of the Mediterranean and the Red Sea, which had been separated by the Isthmus of Suez, came into direct contact. For plants and animals, elements of the Atlanta-Mediterranean and the Indo-Pacific-Erythrean flora and fauna, an opportunity was thus created to penetrate into new regions. For one hundred years, the colonisation of the Suez Canal and the movement through this passage has been going on, but surprisingly little is known of its results· The following list*, compiled from numerous sources, is an attempt to show in a preliminary way, what is known today of the outcome of the two-way migration via the Suez Canal. Verification of records has not been made at this stage; rather, records have been adopted at their face value, for the present purpose. A critical evaluation of the data is planned. The amended list, which is to appear at a later date, will be fully documented. FROM RED SEA TO MEDITERRANEAN Plants Algae Cormophyta Cladophoropsis zollingeri (Klitz.) B0 rg. Halophila stipulacea (Forssk.) Asch. Animals Spongia Hydro idea Halichondria viridis (Keller) Pennaria disticha australis Bale Didiscus placospongoides Dendy Filellum serratum (Clarke) • The list was, except for a few changes, part of a paper submitted to the 20th Plenary Meeting of the International Commission for the Scientific Exploration of the Mediterranean Sea (I.C.S.E.M.S.) in Bucharest, October 1966. However, in the actual publication of that paper (Remarks on the Suez Canal as pathway and as habitat. Rapp. Comm. int. Mer Medit., 1968), the list itself could not be included. Received February 24, 1968 166 Vol. 16, 1967 H. STEINITZ 167 Polychaeta Leptochela pugnax De Man Palaemonella vestigia/is Kemp Syllis exilis Grav. Periclimenes calami Tatt. Opisthosyllis brunnea Lgh. Automate branchia/is Holth. & Gottl. Nereis zonata persica Fauv. Alpheus audouini Coutiere N. capensisVVilley A. crassimanus Heller Perinereis nuntia Sav. A. rapacida De Man Pseudonereis anomala Grav. Synalpheus hululensis Coutiere Dasychone cingulata Grube Ogyrides mjobergi (Balss) Rhodine loveni gracilior Tauber Myra fugax (Fabricius) Asychis gotoi Izuka Leucosia signata (Paulson) Holth. & Gottl. Sipunculida Ixa monodi Notopus dorsipes (L.) Aspidosiphon elegans Charybdis hellerii (A. M. Edw.) (Cham. & Eysenh.) C. /ongico/lis Leene C. merguiensis De Man Crustacea C. sexdentata (Herbst) Copepoda Tha/amita poissonii (Aud.) Neptunus pelagicus L. Pseudodiaptomus salinus Giesbr. N. sanguinolentus (Herbst) Temora discaudata Giesbr. Pilumnopeus vauquelini (Aud.) Canthocalanus pauper Giesbr. Pilumnus hirsutus Stimpson Calanopia el/iptica (Dana) Atergatis roseus (Riipp.) Eucrate crenata De Haan Amphipoda Hyastenus hi/gendor.fi De Man Platimaia wywillethompsoni Miers. Elasmopus pectenicrus (Bate) Plagusia tuberculata Lam. Stenothoe gallensis VValker Stomatopoda Cumacea Squilla massavensis Kossmann Eocuma sarsii (Kossm.) Pycnogonida Decapoda Anoplodactylus saxatilis Caiman Penaeus japonicus Bate P. semisulcatus DeHaan Mollusca Metapenaeus monocerus (Fabricius) M. stebbingi Nobill Pteria occa Reeve Trachypenaeus curvirostris (Stimpson) Meleagrina a/bina Lam. Leptochela aculeocaudata Paulson Chama broderipii Reeve .