Studies on the genus Stenostomum O. Schmidt (Turbellaria; Catenulida). II. A new sub-species and records of two species new to Poland.

Two species of Stenostomum, viz. S. glandulosum Kepner and Carter and S. anops Nuttycombe and Waters, are recorded for the first time from Poland. Descriptions of the Polish material are given, and these are compared with published information on the structure of the species. A new sub-species, viz. S. corderoi Marcus s. sp. poznanensis s. sp. nov. is recorded from Poland, and fully described. Features which separate the new sub-species from S. corderoi corderoi Marcus are listed. [ABSTRACT FROM AUTHOR]