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stipitate, containing a double row of tetraspores. Colour when 

 recent is said to be a very deep full red, fading to reddish- 

 brown in drying. Substance rigidly membranous. It does not 

 adhere to paper in drying. 



Hab. Riukiu Islands at Kerama and Ishigaki-jima (Kuroiwa). 

 Hitherto-known ： In Indian Ocean at Ceylon and Madagascar. 

 In Western New Holland. 



Plate XIII. Fig. I : full-grown form of sterile frond of 

 Neurymenia fraxinifolia in nat. size. — Fig. 2 ： another form of 

 the same, \. 一 Fig. 3 ： marginal portion of membrance, showing 

 marginal spines and veins, slightly magd. — Fig. 4 : spine, — ― 

 Fig. 5 : surface-view of lamina, ― Fig. 6 : two fibrillae on 

 the dorsal median line of a small shoot proliferated from the 

 surface of lamina, ― Fig. 7 : section of lamina cut perpendicular 

 to veins ； a, vein, ― Fig. 8 : tangential section of lamina 

 showinp- cells of the inner layer of frond and a vein, a, - 5 1 Q . ― 

 t ig. g : surface-view of lamina bearing stichidia, ザ. 一 Fig. 10 : 

 stichidium, や ― Fig. 11 : surface-view of a stichidium ； a, axis, ^―, 



