EN
Karyotypes of turbellaria of the genus Geocentrophora (Lecithoepitheliata: Prorhynchidae) from Lake Baikal (Russia): G. wagini (2n=26, NF=36), G. porfirievae, (2n=30, NF=58), G. levanidorum (2n=28, NF=54), G. intersticialis (2n=30, NF=42) and G. incognita (2n=26) are reported for the first time.