EXPLANATION OF THE PLATES. 
Pirates XXXVII-XLI.—Narrow-LeaAveD CHAIN-FERN. Lorinseria 
areolata. Plate XXXVII.—1-7. Young leaves and plants in different stages 
of development. 1. Young plant attached to prothallus. Plate XXXVIII.—1. 
Mature sterile leaf. 2. Section of pinna of mature sterile leaf, 23. Plates 
XXXIX, XL.—Leaves intermediate between the mature sterile and fertile 
leaves. Plate XLI.—z. Mature fertile leaf. 2. Section of fertile pinna, 
* 2h. 
