Diplograptus peosta Hall 



Fig. 17 Specimen in natural size from Indian Ladder beds. Indian Ladder,, 

 Albany county, N. Y. 



Diplograptus (Mesograptus) mohawkensis nov. 



Page 80 

 Fig. 18 Typical (holotype) specimen from Canajoharie shale, Swartztown 



creek near Amsterdam, N. Y. Natural size. 



Fig. 19 Specimen (paratype) from Canajoharie shale at the Carlsbad Spring 

 near Saratoga Springs, N. Y. 



Diplograptus (Amplexograptus) macer nov. 



Page 82 

 Fig 20, 21 Cotypes. Natural size. Uppermost Canajoharie shale at Mina- 



ville, Montgomery county, N. Y. 

 The originals are in the New York State Museum. 



128 



