PLATK VII. 



Page. 



Figs. 1 and 2. Agoni.vtites opimts White and Wliitfield 32 



Lower Carl)oniferims, Kinderhook stage, Burlington, Iowa. 

 Fig. 1, outline of tlie whorl. 

 Fig. 2, side view. 



Note. — These drawings are copied from Dr. Stuart Weller's paper, Kinderhook Faunal Studies, 

 II, The Fauna of the Chonopectus sandstone at Burlington. Iowa: Trans. St. Louis Acad. Sei., Vol. X, 

 No. 3, PI. VIII, fig. 1; and PI. IX, fig. 1. 



162 



