Abstract
A resumé of the genus Mylonchulus is presented, including three new species which are described and illustrated, Mylonchulus prodenticulatus, M. sigmaturellus, and M. solus. Males of M. brevicaudatus, M. incurvus, M. index, M. montanus, and M. striatus are described and figured for the first time. Several known species from various parts of the world are redescribed and figured. Relationship of amphid aperture width to the length and width of the buccal cavity and its position in this genus was studied and evaluated for use in taxonomy. Two taxonomic keys are included, one of all known females, the other of all known males.