144 ART. 12. — -K. YENDO. 



may be safely inferred that after careful researches on a large 

 set of fertile specimens of these species we shall probably be able 

 to strike off sevei'al from the list of those we at present include 

 under the type. 



Localities : Nagasaki (ir. sc. coll.) ; Kushimoto, Kii. Prov. (!) 



rar. dipulaia : Tosa Prov. ( ! ) 



Trilv 5. CYMOS^. J. Ac;. 



Snrffassuin uulffare Aa. 



Plate XVII. Fig. 4-5. 



Spec. p. 3.— /(/.: System, p. 293 partim.— iS. Ag.: Spec. Alg. I. p. 342. 

 —Id: Spec. Sarg. Austr. p. 108.— De Toni: Syll. Alg. III. p. 85. 



= Fucus nutans Turn.: Hist. Fuc. I. Tab. 46 {exel. form. phir.). 



= Sargassum Icptoearpum Kiixz.: Pliyc. Gen. p. 362. — Id.: Spec, Alg. 

 p. 008 ? 



Remark on the species. Ho far as hitherto reported, Sargassum 

 vulgare and its varieties seem to have been confined to the 

 Atlantic Ocean and the Mediterranean Sea, and none of the 

 members belonging to the tribe Cyinosœ were ever thought to 

 exist in our region. During the course of the present study, 

 however, I have mot with two specimens which seem to come 

 under the limits of the above mentioned species. 



I am not very familiar with Sargassum vulgare and its varieties, 

 having had access to only a few specimens which bear that 

 name. Yet I can not refrain from thinking that the species, 

 taken in the sense of J. Agardh, covers many widely divergent 

 forms, so that some of the plants referred to by J. Agaedh as 

 synonyms of the varieties can hardly be considered to belong to 

 the same species. Here, however, I can , not but dispose our 

 ])hints according to the classification of the well known algologist. 



