2 A New Genus of Lichens. 



surface are such as to necessitate a generic distinction. The 

 cyphellaa are deep and well formed, with, however, no dis- 

 tinct cupula as in the Stictce, but the walls are composed, 

 apparently, of the medullary fibres closely felted together, 

 so as to give the appearance of distinct walls. Many of 

 these cyphellsB are, besides, narrower at the aperture — i.e., 

 thelotremoid. 



This lichen is due to Mr. F. M. Bailey, of the Queensland 

 Museum, Brisbane, to whom I have taken the liberty 

 of dedicating it. Mr. Bailey has recently furnished me 

 with specimens of another curious lichen, also peculiar to 

 Australia, and having corresponding affinities — viz., Thy- 

 sanothecium hyalinum (Tayl.), formerly described by the 

 late Dr. Taylor, in Hook, Journ. Bot., 1847, p. 187, under 

 the name Bceomyces hyalinus (coll. Bailey, No. 312). 



Art. II. — On a Supposed New Species of Nipa. 



[Communicated by Mr. F. M. Bailey, F.L.S., of Queensland, 28th April, 



1881.] 



