An annotated list of the millipede (Diplopoda) species described by Johann Carl Author Hollier, John Muséum d’histoire naturelle, C. P. 6434, CH- 1211 Genève 6, Switzerland. E-mail: john. hollier @ ville-ge. ch john.hollier@ville-ge.ch Author Stöckli, Eduard Naturhistorisches Museum Basel, Augustinergasse 2, CH- 4051 Basel, Switzerland. E-mail: eduard. stoeckli @ bs. ch eduard.stoeckli@bs.ch Author Wesener, Thomas Zoologisches Forschungsmuseum Alexander Koenig, Leibniz Institute for Animal Biodiversity, Adenauerallee 160, D- 53113 Bonn, Germany. E-mail: T. Wesener @ leibniz-zfmk. de esener@leibniz-zfmk.de Author Mesibov, Robert West Ulverstone, Tasmania, Australia 7315. E-mail: robert. mesibov @ gmail. com robert.mesibov@gmail.com Author Decker, Peter Senckenberg Museum für Naturkunde Görlitz, Department of Soil Zoology, Am Museum 1, D- 02826 Görlitz, Germany. E-mail: peter. decker @ senckenberg. de peter.decker@senckenberg.de Author Sierwald, Petra Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, IL 60605, USA. E-mail: psierwald @ fmnh. org psierwald@fmnh.org text Revue suisse de Zoologie 2020 2020-06-04 127 1 183 240 http://dx.doi.org/10.35929/rsz.0015 journal article 10.35929/RSZ.0015 0035-418 5743454 mortoni Carl, 1909a: 255-258 , figs 10-11 [ Platyrrhacus ]. Borneo. W. Morton. Unspecified number of ♂ . The MHNG collection contains three specimens in alcohol in two jars. The first jar (MHNG-ARTO-15124) contains one specimen accompanied by a small vial with gonopods. The identification label has “Borneo, ex coll. Morton” written on it. There is a handwritten label indicating that in 1973 Hoffman intended to designate this specimen as the lectotype , but this designation does not seem to have been formally published and the specimen is therefore a syntype . An undated typewritten label states that Hoffman identified the specimen as Eurydirorhachis mortoni (Carl) . The second jar (MHNG-ARTO-15125) contains two broken specimens. The identification label in the jar has “Borneo (W. Morton)” written on it, indicating that the specimens are syntypes . An undated typewritten label states that Hoffman identified this specimen as Eurydirorhachis mortoni (Carl) . Acanthodesmus mortoni (Carl, 1909) , Platyrhacidae