.s*,t., YEyDo.— Notes oix au^a: new to japan, ir. 279 



remark on the generic position of the species, doublingly refer- 

 ring to Sperm othamn ion. To this question, however, I am not 

 able to touch at this moment. 



Locality. Misaki. Sagami Prov (!). 



Distribution. Hitherto known from New Holland. 



Pachymenia carnosa J. Ac. 



Epicris. p. 145. 

 = Platymenia carnosa J. Ag. Act. Hoi. p. 89. Tab. 5. 

 = Schizymenia carnosa J. Ag. Spec. Alg. II. p. 173. 

 = Irid^a carnosa KuTZ. Sidcc. p. 729.-Id. Tab. Phyc. X\ II. Taf. 17. 



The scientific name of an alga known as "Akahada " among 

 tbe fishermen on the coast of the southern side of the Strait of 

 Tsugaru has not been for a long time ascertained. In "Text 

 Book of Marine Botany " p. 738, I have simply mentioned the 

 the Japanese name, remarking that the plant has some resem- 

 blance with Grateloupia elHptica Holmes but undoubtedly a 

 different species. 



While in the fresh state the plant has a very thick and 

 tough context with a dark reddish purple colour. A peculiarity 

 on the margins of frond never fails to attract our attention. 

 The margins are rarely round-edged as in most other thick 

 carnose members but with angulated edges as if cut with a 

 knife at right angles to the surface of frond. Very often a 

 longitudinal ridge may be found, running closely and parallel 

 to the margin. These characters are more or less obliterated 

 in the dried specimens and are apt to be easily overlooked. 



The originals of Pachymenia carnosa J. Ag. in the Agardh- 

 ian Herbarium at Lund show all characters of our " Aka- 

 hada ", so that I have no more doubt about the occurrence of 

 this Cape species on our coast. 



Locality. Tsugaru Strait, Japan (!). 



Distribution. Cape of Good Hope. 



Grateloupia prolongata J. Ag. 



In Act. Holm. 1847, p. lO.-Id. Epicris. p. 154-KuTZ. Tab. 

 Phvc. XII. Taf. 24, I. 



