The Commission has ruled that the usage of the generic names Mecistocephalus Newport, 1843 and Pachymerium Koch, 1847 for two well-established genera of centipedes is conserved by setting aside type species fixations before the designation by Pocock (1898) of Mecistocephalus punctifrons Newport, 1843, as the type species of Mecistocephalus.
Mecistocephalus Newport, 1843 and Pachymerium Koch, 1847 (Chilopoda): current usage conserved by designation of Mecistocephalus punctifrons Newport, 1843 as the type species of Mecistocephalus Newport, 1843," The Bulletin of Zoological Nomenclature 66(1), 93-94, (1 March 2009). https://doi.org/10.21805/bzn.v66i1.a12