PLATE XXVI 
Figs. 1 A, B. Diestoceras indianense (Miller and Faber). A, lateral 
view. B, ventral view. From Little Four Mile creek, near Oxford, Ohio. 
Collected by Prof. W. H. Shideler, of Miami University. 
Figs. 2 A, B. Diestoceras indianense (Miller and Faber). A, vertical 
dorso-ventral section showing poorly preserved siphuncle. B, same speci- 
men. From Little Four Mile creek, near Oxford, Ohio. Collected recently 
by C. L. Faber, from the basal part of the Whitewater member of the 
Richmond formation. 
