Plate V. 



LijInciTdFi f'zoi'iifie m. P. 10. 

 Fig. 1. Snture line, di'iiwn iVdin tlic sixcinicti fii^nrcd in PI. T. Nat, size 



Gaudryceras limatnm m. P. 3fî. 



Fig. 2. 8ido view of a specimen, preserved in the Sei. Coll. Mus. From 

 upper Ammonite-lieds of the Yfiharigawn, Prov. Ishikari. Nat. size. 



