GUELPH FAUNA IN THE STATE OF NEW YORK I 7 7 



FIG. 



8-10 Three views of the most complete specimen observed ; show- 

 ing the depth of the camerae, the ventral lobes of the 

 sutures and the low longitudinal surface ribs 

 The originals of all drawings are from the Lower Shelby bed 



(N. Y. State Museum). 



