PLATE XIII. 



FORBESIA CANCELLATA. 



Fig. 1. General appearance of i^or6esm cancellata, showing three bifurcations. 

 A fourth obscured in the stone occurs half-way along the left prong 

 of main fork. Compare Baily's fig. la of Sphenopteris, sp. 



Fig. 2. The lowest bifurcation of fig. 1 slightly magnified. 



Fig. 3. Portion of fig. 1, in the region of the upper, right bifurcation, still more 

 highly magnified to show small group of sporangium-lilje bodies to the 

 left of fork, comparable in position with the mop-like group of 

 sporangia in Cephalopteris mirabiUs, N. 



