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 neglectus Carl, 1903: 560-561 [ Acutangulus ]. Orizaba, Mexico . Unspecified series. The MHNG collection contains fragments of at least two specimens in alcohol in two vials. The first vial (MHNG- ARTO-18552) contains a smaller vial of fragments and has an old data label with “Orizaba, Mexique ” written on it. There are two handwritten identification labels with “ Acutangulus neglectus Carl ” and “ Strongylosoma coccineus S. et H. ♀ ” written on them respectively. The second vial (MHNG-ARTO-18553) contains a smaller vial of fragments and an old data label which has once been secured on a pin and is largely illegible although “Orizaba” is just discernible. There are two handwritten identification labels with “ Acutangulus neglectus Carl ” and “ Strongylosoma coccineus S. et H. ♂ ” written on them. These specimens are syntypes . Carl gave this name to the specimens referred to as Polydesmus coccineus var. by Saussure & Humbert (1872) which he recognised as a distinct species when revising the specimens. Acutangulus neglectus Carl, 1903 , Rhachodesmidae