The genus Raillietostrongylus Lane, 1923, was essentially characterized by the presence of “rudimentary subventral semilunes” guarding its oral aperture. In its type and only species R. samoensis Lane, 1923, these structures were described as “most rudimentary.”. Cameron (1924) states bluntly that cutting plates do not exist in this species, so that he can see no reason for removing it from the genus Globocephalus. The natural implication of the wording is that in designating the new genus a seriously inaccurate observation was recorded.