Geschiebe-Ostrakoden II- Ostracodes from erratic boulders

From Ordovician erratic boulders of Northern Central Europe and Sweden 15 new species are described of the genera Platybolbina, Moeckowia, Ampletochilina, Duringia, Quadritia, Pygoconcha, Unisulcopleura, Spinopleura, Sudon, Bairdia (?), Platyrhomboides (?) and Beecherella and of 3 new genera of the families and subfamilies Sigmoopsinae (?), Bolliinae and Jaanussoniidae. A new genus is established for Bollia duplex KRAUSE, 1892. The ostracode faunas of a Backsteinkalk and an Ojlemyrflint boulder and of the Lavendelblauen Hornstein type Sy154 are given.