156 



rLATii II. 



Page. 



/iaioi^tonia rurluhilc I'lridi 150 



1. Typical taiiKeiitial soctioii. .\ is. r.allslowii. Ir.d. 



la. Tangential section, showing nnnsnally large acantliopores 



and faint median lamina, x is. AVeisIjurg, Ind. 

 II). Shallow tangential section, showing thin walls and few 



aeanthopores, x is. Weishnrg. Ind. 

 Ic. Ramose specimen, natural size. Weisburg, Ind. 



