Bryophyta. It was communicated by Prof. R. van der Wijk, Groningen, that the preparation of a first part of this series is in an advanced state. Pteridophyta. Mr Alston finished the revision of Isoetaceae and is engaged on the revision of Schizaeaceae. Prof. Holttum has practically finished his revision of Gleicheniaceae. These revisions together are expected to comprise the first part of this series. Mr A.G.L. Adelbert is at the Rijksherbarium working on a thesis for Prof. Lam on the genus Lycopodium.