PLATE Et 
Figs. 1-4, 7, 9. Prioniodus recedens, Bryant. X 25. 
Figs. 5, 6, 8, 11. Prioniodus hamatus, Bryant. X 25. 
Fig. 10. Prioniodus erraticus, Hinde. X 25. 
All of the originals figured on this plate are from the Conodont 
bed (Genesee) in Eighteen Mile Creek, Erie County, N. Y, 
30 
