T2 AKT. 3— K. YEN DO: 



the mode of" ramification, and I'rom the hitter by its remarkable 

 genicula. 



Found <jn a roclv at .sublittoral region : not very common. 

 Kaifii : Matsushima. 



7. Amphiroa dilatata, Lamx. 



IM. T. tio-. 17-1^] : PL V. fig. 4, 



Amphiroa dihitata, I.amx. Polyp. Coral, j). 299. 



Harv : jSTer. Austr. p. 97. 



Kiitz : Spec. Alg. p. 70o. 



Id : Tal). Pliyc. VIIL Tab. 50. fig. III. 



De Toni : Phyc. Jap. Xov. p. 41. 



Arescli : in J. Ag. Spec. Alg. II. p. ôoG. 

 Amphiroa galaxauroides, Sond. Plant Preiss. vol. II. p. 188. 



Martens : Preus. Exp. n. Ostasien, p. 'JiK 



Kiitz : Spec. Alg. p. 704. 



Id : Tab. Pliyc. A' III. Taf. öl. fig. I. 



Tiie large genicnla on the lowermost portion give the frond a 

 fiexible character : this circumstance, no doubt, is the cause of the 

 frond's being always found spreading radially while living. The 

 conceptacles are found mostly on the shaded side of the fronds. They 

 are sometimes densely frosted over an articulus, and sometimes 

 arranged in two irregular rows in the periclinal direction. The 

 diagram;itic as Avell as more minute details of a meridional section of 

 an articulus of the former case are shown in the plate. (Pi. I. fig. 

 17 and 18). 



About the transverse striations Areschon«- does not «ive any 

 particular description. Kiitzing remarks " non striae " in the diag- 



