fading on exposuro to dirty-wliitc. The substance when fresh is like that of 

 ])archmcnt ; when dry, very tough and rigid. The plant does not in the 

 least adhere to paper in drying. 



Of this I have received specimens from Dr. Curdie and Dr. 

 Mueller, and have myself collected it in abundance on Brighton 

 beach, where, after storms, it is frequently thrown up in large 

 quantities. None of my specimens, however, bear fruit, and 

 those described by Sonder are equally barren. 



In distributing my Australian Algae formerly, I erroneously 

 referred this plant to the C. luxmians, Ag., a species unknown 

 to me except by description, but which, from description, seems 

 at least to be a nearly allied form. 



Fig. 1. Cryptonemia crispa, — tJie natural size. 2, Longitudinal section of 

 the lamina. 3. Transverse section : — magnified. 



