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 macracanthus Carl, 1941b: 685-690 , figs 185-194 [ Thyropygus ]. Anaimalais: Kaffeepflanzung Naduar, ob Valparai, 1400 m ; Talboden von Valparai, 1100 m , III.1927 , unter Stämmen und im Mulm. Two ♂ and an unspecified number of juvenile ♀ . The MHNG collection contains 17 specimens in alcohol in five vials. The first tube (MHNG-ARTO-14496) contains one specimen broken into four pieces, and a label with “ Thyropygus macracanthus Carl , ♂ forma B. Valparai III.27 ” written on it. The second vial (MHNG-ARTO-14497) contains one specimen broken into six pieces and a smaller vial containing some partially dissected segments. The label has “ Thyropygus macracanthus Carl ♂ type Naduae Estate” written on it. The third tube (MHNG-ARTO-14498) contains one specimen broken into two pieces and labels with “ Thyropygus macracanthus Carl , ♀ var. de sculpture! Valparai 4.III.27 ” and “ ♀ 58 seg. voir sculp. et antennes” written on them respectively. The fourth vial (MHNG- ARTO-14499) contains four specimens , all broken, and labels with “ Thyropygus macracanthus Carl , ♀♀ 57-59 segm. Naduar s. Valparai III.27 ”, “Valparai Naduar Estate 7.III ” and “ ♀♀ 57-59 segmte , ♀ juv. 56 segm., 2 beinlos” written on them respectively. The fifth vial (MHNG- ARTO-14500) contains ten specimens , all broken, and labels with “ Thyropygus macracanthus Carl , ♀♀ 57-59 segments, juvi, Valparai Anaimalais” and “ ♀♀ 57-59 segmte auch die keinsten!” written on them respectively. All of these specimens are from localities mentioned in the description and are syntpes. There are also two microscope slide preparations; 1) a slide (MHNG- ARTO-14501) with the telopodites of the gonopods of the ♂ from Naduar; 2) a slide (MHNG-ARTO-14502) with the gonopods, antenna and first pair of legs of the other ♂ . The differences between Carl’s a and b varieties were discussed in the description, but the forms were not described and named separately. Gnomognathus macracanthus (Carl, 1941) , Harpagophoridae