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, 1919: 391-392 , figs 17-22 [ Saussurobolus ]. Cuernavaca. Unspecified series. The specimens upon which Carl based his description were identified as Spirobolus nietanus Saussure, 1860 by Saussure & Humbert (1872) , but Carl (1919: 391) found that the posterior gonopods were distinct from those of the type specimen. The type specimens of S. neglectus could not be located, but might be mixed with fagments of S. nietanus in alcohol in the MHNG collection (see Hollier et al ., 2017 ). Centrelus neglectus ( Carl, 1919 ) , Atopetholidae neglectus Carl, 1902: 676-677 , pl. 12, figs 107-108 [ Sphaeriodesmus ]. Mexico (Genfer Museum). Two ♂ . The MHNG collection contains two specimens in alcohol (MHNG-ARTO-18241). Both have pins running the length of the body and both are broken. The vial containing the specimens has a label with “ Sphaeriodesmus neglectus n. sp. ” handwritten in pencil in it. A second vial (MHNG-ARTO-18242) contains a smaller vial with gonopods and a label with “ Sphaeriodesmus neglectus Carl, 1902 Pl. 12, Fig. 107” handwritten in pencil. The identification label in the jar has “ Mexique ” written on it. These specimens are syntypes . Sphaeriodesmus neglectus Carl, 1902 , Sphaeriodesmidae