The occurrence of a sandstone horizon abounding in tubes of Bathysiphon Sars has been discovered ni the Eocene of the environs of Gródek on the Dunajec. A new species B. inconstans is here described, along with studies on the structure and occurrence of, as well as deformations underwent by its tubes in the process of flysch sedimentation. Since the writer considers them to be the tubes of the Annelida and not the tests of the foraminifers, he thus questions the so far accepted view on the systematic positions of the bathysiphons.
A new reef-building cyclostome bryozoan species Fasciculipora janinae sp. n. (Fasciculiporidae Walter) with highly variable zoaria has been recorded in the Miocene bioherms of Roztocze. Poland.
Bases of octocorals, mostly epifaunial, from Cretaceous deposits of the environs of Cracow, Poland have been classified according to parataxonomic criteria. A form-genus Octobasis has been proposed writer for eleven forms-species of octocorals.
Two new species of Bryozoa Cheilostomata, considered representatives of the two new genera, Xaveropora n.gen. and Christinella n.gen., are described from the clayey and sandy deposits of the Tortonian of Poland. Xaveropora ojcowensis n.sp, is marked by ovicells situated in front of the orifice; this type of an ovicell has been called by the author a prostomial ovicell. Christinella pulchra n.sp, is distinguished by its endozooecial ovicells which, with time, grow and completely cover the opesia.