First records of polychaetes new to Egyptian Mediterranean waters

摘要: Abstract Nineteen benthic polychaete species were recorded for the first time in intertidal zone of Alexandria coast, south-eastern Mediterranean Sea. They belong to Syllidae (7 species), Hesionidae (3 Serpulidae (2 species) and 7 other families (one each). Of these Eunice miurai Carrera-Parra & Salazar-Vallejo 1998 appears be new Sea, while four alien earlier found Egyptian waters: Opisthosyllis brunnea Langerhans 1879, Loimia medusa Savigny 1822, Syllis schulzi Hartmann-Schroder 1960, Phyllodoce longifrons Ben-Eliahu 1972. The newly demonstrated markedly different patterns frequency occurrence numerical abundance. Spirobranchus triqueter Linnaeus 1758, S. schulzi, L. Salvatoria clavata Claparede 1863 permanent abundant fouling samples along coast. Saccocirrus papillocercus Bobretzky 1872 persisted sediments at two sites, with a much higher count stressed one, Protodrilus sp. inhabited sites throughout year, sometimes very high numbers. In addition, earlier, Brania arminii 1881, Odontosyllis fulgurans Audouin Milne-Edwards 1833 O. frequently observed