Eurychilina subradiata Ulrich 



Fig. 16 Right valve, x 10. 



Glens Falls limestone. Canajoharie, Montgomery county, N. Y. 



Technophorus cancellatus Ruedemann 

 Page 122 



Fig. 17 Right side of a somewhat imperfect carapace, retaining the surface 



sculpture, x 4. 

 Fig. 18 Cast of the interior of the right side retaining the undivided " beak." 



X 2. 



Snake Hill beds. Snake hill, Saratoga county, N. Y. 

 All originals are in the New York State Museum. 



142 



