Page:TransRoySocCanada 16 4 159-167.djvu/2

 The two remaining species described come from eastern Cape Breton from a higher horizon. One is the carapace of a species of Eurypterid whose near allies have been found at an equivalent horizon in Pennsylvania, and in England. The présence of Eurypterids, a rapidly declining race, in Nova Scotia, had already been indicated by the previous discovery of several fragmentary abdominal remains. The other form under consideration is an odd one of doubtful relationships, but which invites comparison with such shield bearing Merostomata as the Xiphosurids or sword-tails.