Notes on the diatom collection of the Natural History Museum, London (BM) V: (a) ‘Stictodiscus manillensis’ nom. nud., (b) Stictodiscus pantocsekii and ‘Stictodiscus pantocsekii var. minor’, (c) a note on the name ‘Stictodiscella’; and (d) some comments on Jósef Pantocsek’s Beiträge zur Kenntnis der Fossilen Bacillarien Ungarns

Diatom genus Planothidium (Bacillariophyta) from streams and rivers in California, USA: diversity, distribution and autecology

Notes on the diatom collection of the Natural History Museum, London (BM) I: The first place of publication for Cymatopleura brunii P. Petit, a review of its type specimens with a note on the name Surirella undata

A re-description of Fragilaria fonticola Hustedt and its varieties, with three new combinations and one new species from India

New Freshwater Gomphonemoid Diatoms from Streams in the Sierra Nevada Mountains, California, USA

Newly Recorded Species of Diatoms in the Source of Han and Nakdong Rivers, South Korea

Description of five new species of the diatom genus Luticola (Bacillariophyta, Diadesmidaceae) found in lakes of James Ross Island (Maritime Antarctic Region)

Taxonomy, ecology and analysis of type material of some small Encyonopsis with description of new species in Ireland

Planothidium sheathii, a new monoraphid diatom species from rivers in California, USA