PLATE XIV. 



A. MELOBESIA, page 107. 



Fig. 1, M. fasciculata. 2, leaf of Zostera, on which 

 M. membranacea is growing ; both the natural size. 

 3, fronds of M. membranacea ; magnified. 



B. LITHOCYSTIS, page 111. 



Fig. 1, Part of a frond of Chrysymenia clavellosa, on 

 which L. Allmanni is growing; the natural size. 



2, fronds of L. Allmanni ; very highly magnified. 



C. HlLDENBRANDTIA, page 110. 



Fig. 1, H. rubra, growing on a pebble; the natural 

 size. 2, small portion of the frond, viewed vertically. 



3, vertical section of the frond, cut through a con- 

 ceptacle. 4, a tetraspore ; all magnified. 



D. PEYSSONELIA, page 144. 



Fig. 1, P. Dubyi, growing on a fragment of stone ; the 

 natural size. 2, vertical section, cut through a 

 wart. 3, tetraspores ; both highly magnified. 



