The Trilobites, which include one new species, here described were collected by the writer from Akpatok Island 1 in Ungava Bay while on the Oxford Hudson Straits Expedition in 1931. The single species of graptolite found there has already been described 2; in addition to the trilobites, there are brachiopods, corals, crinoids, gasteropods, cephalopods, and ostracods, which still await identification. The following species of trilobites are here recorded: Isotelus iowensis Owen, Megalaspis beckeri Slocom, Illaenus eucentrus Troedsson, Illaenus groenlandicus Troedsson, Bumastus sp., Calymene cf. fayettensis Slocom, Calymene cf. meeki Foerste, Encrinurus sp., Ceraurus horridus Troedsson, Ceraurus tuberosus Troedsson, Ceraurinus icarus (Billings), Ceraurinus daedalus sp. nov., Pterygometopus fredricki Slocom.