drying the young frond adheres strongly to paper ; the adult frond and the 

 stipes impcrfeetly. 



This species is readily known by the very decompound frond, 

 with linear multipartite lobes, combined with the uniformly den- 

 ticulate margin, the dark colour, and the rigid substance. It is 

 perhaps most nearly related to N. Gunnianum, though abun- 

 dantly different in aspect. 



The specific name pristoideum refers to the general external 

 resemblance which our plant bears to the Suhria pristoides of 

 the Cape of Good Hope. That species was so called from a 

 supposed resemblance between its serrulated ultimate lobes and 

 the serrated snout of the Saw^-fish {Prist is anliquoruni). 



This plant was first found by Dr. Curdie, of Geelong, near 

 the mouth of the Glenelg, and seems to be not uncommon on 

 the coast between that point and Western Port, but has not yet 

 been noticed elsewhere. 



Fig. 1. NiTOPHYLLUM PRISTOIDEUM, — the natural size. 2. Apex, with cysto- 

 carps. 3. Section of a cystocarp. 4. Apex, with sori of tetraspores. 5. 

 A tetraspore. 



