July, 1917.] K. TEND 0:— NOTES ON ALGAE NEW TO JAPAN. VII. 207 



of 10-13 cells. The basal cell of a pinna is always short and 

 globular. In some cases I found a short filiform branch from 

 the basal cell. The terminal two cells are short and small 

 and the apical one, acute. The rest are cylindrical, l£— 2 times 

 as long as diameter, pinnuliferous one being more or less 

 hexagonal-shaped. 



The present plant has a strong resemblance to Callitham- 

 nion australe J. Ag. and Acrothatnnion pulchellum J. Ag. These 

 two are rather difficult to separate from each other, as the 

 description on the tatrasporangia of the latter is open to 

 question 1 - and as the intermediate forms linking the branching 

 systems of both are frequently met with. Anyhow, it differs 

 from them by the peculiarity of the sporangium-bearing 

 pinnulets. 



Locality. Shima Prov.(!). 



Distriburion. New Zealand. 



Hildenbrandtia rosea Kutz. 



Phyc. Germ., p. 384.— De Toni : Syll. Alg. IV, p. 1715.— Kylin : 

 Algenfl. schwed. Westkiiste, p. 196. 



(For synonyms and other references, see : De Toni, I.e.). 



This species appears to be pretty widely distributed in 

 the south-western parts of Japan. It ts generally found coating 

 pebbles and stones in shallow recesses of brackish water. 



Locality. Hizen Prov.(!) ; Higo Prov.(!) 



Distribution. Western coast of Europe; Atlantic side of 

 North America. 



Sapporo, 20 May, 1917. 



1) Yendo: Notes on Algae New to Japan, V'., p. 202. 



