Beschreibung:
<jats:p>The type species of the eurekiid trilobite <jats:italic>Corbinia</jats:italic> Walcott, <jats:italic>C. horatio</jats:italic> Walcott, 1924, possesses very short palpebral lobes located opposite 2p glabellar lobe. The palpebral lobes of species of <jats:italic>Eurekia</jats:italic> Walcott and of <jats:italic>Corbinia apopsis</jats:italic> Winston and Nicholls, 1967, are considerably longer and located opposite 1p and 2p glabellar lobes. <jats:italic>Corbinia</jats:italic> is here restricted to the type species, and <jats:italic>C. apopsis</jats:italic> is assigned to <jats:italic>Eurekia. Corbinia horatio</jats:italic> occurs in the Basal Silty Member of the Survey Peak Formation of southern Alberta and appears to be confined to the lower part of the <jats:italic>Eurekia apopsis</jats:italic> Subzone of the <jats:italic>Saukia</jats:italic> Zone (basal Ibexian).</jats:p>