;112 J3lCTV(».SP0NGIDA 



PLATE LVII. 



CALATIIOSPONGIA, gen. nov. 



Page 155. 

 (See Plates XLVIII, XLIX, L, LI, LII, LVI, LX, LXVIII.) 



CaLATIIOSPONGIA (?) MAGNIFICA, Sp. nOV. 

 Page 182. 

 (See Plate LVI.) 



Figure 1 . The upper portion of a very large example, retaining a part of the 

 body and enough of the apertural e.xpansion to show its extent. 

 Keokuk group. Grawfordsville, Indiana. 



