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Dr. Moore showed Lichmophora flabellata gathered at Malahide, 
a new locality for this form. 
Mr. Archer exhibited a new and minute algal form, referable to 
the genus Merismopedia. This wasa singularly neat little object 
in the exquisite elegance of its even files of rather elongate 
reddish cells, with a bluish margin, held together into little paral- 
lelograms (like little windows with bluish sashes and very minute 
reddish coloured panes), and requiring a rather high power to view 
them. The peculiar colour of the component cells, and the com- 
paratively sharply angular tablets formed by them rendered this 
little alga a very distinct looking thing from ordinary forms of 
Merismopedia; Mr. Archer hoped for a possible future occasion 
to refer to this little production more at large. 
Mr. Archer brought down a preparation under Beale’s carmine 
fluid, of specimens of Acanthocystis Pertyana (ejus), and at the 
same time he exhibited a drawing of Acanthocystis spinifera( Greeff), 
treated in the same way, both showing the central highly dyed 
body, the presumed “ vesicula intima,” and the presumed “ central 
capsule.” The appearances presented,and the deductions therefrom 
which seemed to him legitimate to draw, are adverted to in a paper 
in current number of this Journal, and hence any further refer- 
ence here would be but superfluous. 
