Die Echinodermenlarven der Plankton-Expedition nebst einer systematischen Revision der bisher bekannten Echinodermenlarven "Ergebnisse der...Plankton-Expedition der Humboldt-Stiftung"., "Ergebnisse der...Plankton-Expedition der Humboldt-Stiftung," ii, J. 120 pp., ix pls., 1 map. (Jan.) The text of this is merely a German translation of (156). There are a few additional text-figures. The plate-figures are the same but on more plates. The names of the so-called "new species" must date from (156) which was on sale in November, 1897. Abstracts by H. Ludwig: Zool. Jahresber. 1898 (July, 1899), Zool. Centralbl. pp. 612-61 62 [Zoological Record Volume 35]
Systematiske studier over Echinodermlarver. Doctoral thesis. Johan Moller, Kobenhavn, 1898: 168 pp.. 86 [Zoological Record Volume 35]