(Number 1)  May 2003
 R.M. Crawford, Y.V. Likhoshway & R. Jahn - Morphology and identity of Aulacoseira italica and typification of Aulacoseira Bacillariophyta)(pp 1-19);  D.B. Danielidis & D.G. Mann - New species and new combinations in the genus Seminavis (Bacillariopyta) (pp 21-39);  M. Garcia -Paralia ellipticas sp. nov., an epipsammic diatom from Santa Catarina State, Brazil (pp 41-48); F. García-Rodríguez & A. Witkowski - Inferring sea level variation from relative percentages of Pseudopodosira kosugii in Rocha Lagoon, SE Uruguay (pp 49-59);  R. Jahn & F.A.S. Sterrenburg - Gyrosigma sinense (Ehrenberg) Desikachary: typification and emended species description (pp 61-67);  S.E. Sala & N.I. Maidana - Morphology and taxononomy of Amphora atacamae Frenguelli (Bacillariophyceae) (pp 69-78);  E.A. Sar, O. Romero & I. Sunesen - Cocconeis Ehrenberg and Psammococconeis Garcia (Bacillariophyta) from the Gulf of San Matías, Patagonia, Argentina (pp 79-106); W. Scheffler, V. Houk & R. Klee - Morphology, morphological variability and ultrastructure of Cyclotella delicatula Hustedt (Bacillariophyceae) from Hustedt material (pp 107-121);  P.C. Silva - Nomenclatural notes on Discoplea Ehrenberg (pp 123-130); P.A. Siver, P.B. Hamilton, K. Stachura-Suchoples & J.P. Kociolek - Morphological observations of Neidium species with sagittate apices, including the description of N. cape-codii sp. nov. (pp 131-148); S.A. Spaulding, A. Akbulut & J.P. Kociolek - A new diatom species of Aneumastus D.G. Mann & Stickle from central Turkey (pp 149-160); A. Zalat - Paleoecological and environmental history of Lake Mariut, Egypt, by means of diatoms (pp 161-184); Note:N.M. Brassac, L.C. Torgan & T.A. Veiga Ludwig - Possible transfer of Surirella schweickerdtii to the genus Stenopterobia (pp 185-190); Opinion: A.-M.M. Schmid - The evolution of the silicified diatom cell wall - revisited (pp 191-195); Meeting Report (pp 197-198); Review (p. 199); Notice (p. 201). 
 
(Number 2) November 2003

Barron, J.  - Planktonic marine diatom record of the past 18 m.y.: appearances and extinctions in the Pacific and Southern Oceans (pp 203-224); Cohn, S.,  Farrell, J.F.,  Munro, J.D.,  Ragland, R.L.,  Weitzell, Jr. R.E.  &  Wibisono, B.L.  - The effect of temperature and mixed species composition on diatom motility and adhesion (pp 225-243);  Fourtanier, E. & Kociolek, J.P. - Addendum to “Catalogue of the Diatom Genera” (pp 245-258); Main, S. - Diprora haenaensis gen. et sp. nov., a filamentous, pseudoaerial, araphid diatom from Kaua’i (Hawaiian Islands) (pp259-272); Monnier, O., Lange-Bertalot, H. & Bertrand, J. - Nupela exotica species nova: une diatomée d’un aquarium tropical d’eau douce. Avec des remarques sur la biogéographie du genre (pp273-291); Potapova, M.G., Ponader, K.C., Lowe, R.L., Clason, T.A. & Bahls, L.L. -  Small-celled Nupela species from North America (pp293-306); Shimada, C., Burckle, L.H. & Tanimura, Y. - Morphological variability in Neodenticula seminae, a marine planktonic diatom in the North Pacific Ocean and Bering Sea (pp307-322); Sterrenburg, F.A.S. - Studies on the genera Gyrosigma and Pleurosigma (Bacillariophyceae). Pleurosigma obscurum W. Smith revisited (323-329). Suto, I. - Taxonomy of the marine diatom resting spore genera Dicladia Ehrenberg, Monocladia gen. nov. and Syndendrium Ehrenberg and their stratigraphic significance in Miocene strata (pp331-356); Tanaka, H. - Cyclostephanos kyushuensis sp. nov. from Pliocene sediments in southwestern Japan (pp357-364); Toyoda, K., Nagumo, T., Osada, K. & Tanakaa, J.  Morphological investigations of Achnanthes javanica Grunow and A. subconstricta (Meister) comb. nov (pp365-375); Note: Cantonati, M. & Angeli, N. -  New findings on the ecology and  ultrastructure of Cymbella ancyli Cleve (pp377-375); Obituary: Professor Alexander Pavlovich Skabichevsky (1904-1990) (pp. 385-398).   Notice:  18th International Diatom Symposium, Poland, 2-7 September, 2004, p399.