279 



ever of a foliaceons portion, (fig. 2) : a slight and scarcely perceptible 

 indentation does, however, exist at the point a in fig. 2, and the slight 

 projection above this, shown better at b in the sectional view fig. 3, 



Eupteris aquiliiia. Fig. 1. 



8 9 10 



Vernation of Eupteris aquilina and Pteiis tremula. 



contains the future foliaceons portion. Figures 4 and 6 represent the 

 same frond in a state somewhat more advanced, and figs. 5 and 7 are 



