Plate IV. 



Page 



Fig. 1. Solenopora sp., tangential section, X 56 9 



Fig. 2. longitudinal section, X 16 9 



Fig. 34. Parallelopora favositiforntis nov. gen. & sp., tangential and longi- 

 tudinal sections, X 2 13 



Fig. 56. Favosites forbesi E. and H. var. eifelensis NICH., tangential and longi- 

 tudinal sections, X 2 11 



Fig. 7. Cladopora rectilineata SIMPS, on a slab, nat. size 14 



