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marked by rudimentary growth of hair-leaves. AnthcriJia and 

 c\'stocarps are unknown to me at present. Colour Leauiiful 

 rosy-red. Substance of lamina thin and membranaceous, that of 

 stem and nvclbrib cartilaginous. The plant does not adhere to 

 paper in drying. 



Hab. Okinawa Isl. (Riukiu Isl. Kuroiwa) ； Ogasawara-jima 

 (abundant pieces obtained from the stomach of Chelonia vhddis 

 T. et S.). 



Hitherto-known : In the Pacific at Samoa Isl., Sandwich Is 1 ., 

 Basilan Isl. and Sul し】 Isl. In Indian Ocean at Mauritius Isl. and 

 Madagascar Isl. At Dar es Salaam on the east coast of Africa. 



The locality mentioned above is the northern-most limit known 

 of the distribution of this alga in the North Pacific Ocean. 



Plate XXV. Fi§'. I : sterile frond of Amansia glomerata, f, 

 ― r、ig. 2 : portion of lamina showing rosette-like proliferations 

 and thickening of the midrib, せ. 一 Fig. 3 ： portion of the middle 

 one of three rosettes in Fig. 2， to show the younger prolifera- 

 tions, ザ. —— i^^ig. 4 ： young plantlet produci ip" roots from the 

 lower end of midrib, \. — Fig. 5 ： adventitious growth of creepinp* 

 branches from marginal portion of 】amina， ― Fig. 6 : portion 

 of surface of lamina showing zonal arrangement of cells on both 

 sides of the midrib, ^ ―^. —— Fig. 7 : portion of the cross-section 

 of lamina showing the midrib and 5 pericentral cells ； v } the ventral, 

 d, the dorsal side, — —— l^'ig. 8 ： the same showing the formation 

 of cortical cells on the ventral side of the midrib, -. —— Fig. g ： 

 cross-section of thick midrib, マ. 一 t lg. 10 ： apical portion of 



