266 JAMES PERRIN SMITH AND STUART WELLER 

 EXPLANATION OF PLATES 



(All figures are natural size) 

 PLATE VI 



Fig. i. Prodromites gorbyi (Miller). No. 6208 Pal. Coll. Walker 

 Museum. Miller's type specimen from the Chouteau Limestone, Pin Hook 

 Bridge, Pettis county, Missouri. 



PLATE VII 



Fig. 1. Prodromites gorbyi (Miller). No. 6474 Pal. Coll. Walker 

 Museum. From the Chouteau Limestone, Pettis county, Missouri. 



PLATE VIII 



Fig. 1. Prodromites gorbyi (Miller). No. 6222 Pal. Coll. Walker 

 Museum. From the Kinderhook beds, Burlington, Iowa. 



Fig. 2. Front view of the same. 



Fig. 3. Prodromites firaematurus sp. nov. Smith and Weller. No. 6223 

 Pal. Coll. Walker Museum. From the Kinderhook Goniatite bed, Rockford, 

 Indiana. 



Fig. 4. Front view of the same. 



Fig. 5. Septa of Hedenstroemia mojsisovicsi Diener. After C. Diener,. 

 Pal. Indica, series 25, Vol. II, Part II, Plate XX, Fig. \c. 



James Perrin Smith, 

 Stuart Weller. 



