"The interpretation of Brachymetopus (Brachymetopus) M'Coy and B. (Brachymetopina) Reed in Europe has been contrary to the general interpretation in America. The relevant literature is critically reviewed and it is concluded that both usages have been at fault and neither is in accordance with the International Rules of Zoological Nomenclature. The type species of B. (Brachymetopus) is maccoyi Portlock, 1843, and the type species of B. (Brachymetopina) is ouralica de Verneuil, 1845; B. (Brachymetopina) is a subjective synonym of B. (Brachymetopus)."