26 T. H. BUFFHAM ON CHANTRANSIA- TRIFILA. 



three filaments in one plane, of three or four cells in length, 

 sometimes terminating in a very thin hair. Cells about 5 fx 

 long, and 4-5 /a diam. Monosporangia 7-8 ft diam., spherical, 

 terminal on 1-2-celled branches on the inner sides of lateral 

 primary filaments. Antheridia and cystocarps unknown. 

 Habitat. On old Cladophora (? utriculosa Kiitz.), Swanage. 



Explanation of Plate III. 



Ghantransia trifila n. sp. 



Fig. 1. — A fully mature plant with three monosporangia, 

 one of which is empty. X 200. 

 ,, 2. — Mature plant with two monosporangia. x 1000. 

 „ 3. — Empty monosporangium. x 1000. 

 ,, 4. — Very early stage : the basal cell and one lateral 

 filament of three cells, x 1000. 



