FRESHWATER AI.C.E FROM JUAN FERNANDEZ AND EASTER ISLAND Q3 



they observed from the Antarctic, and certainly my specimens come very near 

 to this form. 



Size: lat. fil. 3 a. 



Masatierra: On freshwater sponges. 



Area of distribution : The above-mentioned form is previously known from 

 Cape Royds, Victoria Land. 



Addenda. 



25. Nostoc punctiforme (Kuetz.) Hariot. 



Hariot in Journ. de Bot. 1891; Polycoccus punciiformis Kuetzing Phyc. gen. 



This Nostoc occurred in the intercellular spaces of three Gunnera-species. 

 The specimens are quite like those collected by LaGERHEIM in Equador and 

 issued in Wittrock, Nordstedt & Lagerheim : Algae exsiccate 1338. 



Masatierra: in Gunnera peltata Phil, and Gunnera bracteata Steud. 



Masafuera: in Gunnera Masafuerce Skottsb. 



Area of distribution; World-wide. 



Christiania, The Botanic Museum of the Royal Fredericks University. 



April 27th, iQ2i. 



