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THE EOT A NTCA L MAGAZINE. C^"' • xxviii. No. 333. 



cies of Griffithsia, G. tenuis Ag. and G. sp/ . As I was atixious 

 to ascertain Holmes's specimen, I visited the Herbarium of the 

 University of Birmingham where, as I was told by Mr. Holmes, 

 all his collections of algae are now kept. Very sorry to say, 

 however, I failed to find out any Japanese species of G. coral- 

 Una in the Herbarium. I reserve therefore the question for 

 future investigation if the same species really occurs on our 



I have collected a Griffithsia in several parts of Japan. In 

 various respects it agreed well with G. Schousboei Mont. As 

 this species was hitherto known from the Mediterranean Sea 

 and the vicinity of Canary Islands only, I was hesitating to 

 identify my plant with it. After studying the authentic speci- 

 mens, there is no more doubt left that the plant is also found 

 in a remote w^ater from the type locality. Very probably what 

 Okamura mentioned under G. sp. may be the same species with 



Locality. Cape Inuboi (!) ; Kii Prov. (!) ; Rikuzen Prov. 

 (R. Tsuge). 



Antithamnion gracilientum J. Ag. 



Anal. Algol, p. 21. 

 = CaIlithawnion gracilientum Hary. Trans. Irish. Acad. Vol. XXII, 

 No. 294. 



This tiny plant has been found growing epiphytic on Gala- 

 xaura apiculata Kjellm. Studying the originals at the Agardh- 

 ian Herbarium and at the Herbarium of the Trinity College, 

 Dublin, I have no hesitation to identify my plant with the 

 above mentioned species. Although it is defined to have oppo- 

 site pinna on the basal part of frond, such is rather incidental 

 and very likely abnormal ; in my specimens the pinnse are un- 

 exceptionally alternate. Again, the prostrate habit of frond is 

 limited to the basal part only. The original specimens prove 

 these two points as less important for the specific distinction. 



My specimens are antheridial and cystocarpic, though not 

 matur ed. In Sylloge Algarum IV, p. 1407, De Toni gives some 



