



Explanation of Plate XXIII. 



Scaphites nodosus— Meek. 



Fig. i. Views of sutures. 



Figs. 2, 3 and 4. Views of protoconch. 



Fig. 5. Suture of S. warreni. 



Fig. 6. Suture of adult S. nodosus. 



Figs. 7-12. Young individuals. 



