1 1 8 THE B OTA NIC A L MA GAZINE. [Vo i. xxm. No. 270. 



=Monostroma splendens Wittr.: Monostr. p. 50, Taf. 3. fig. 12. 

 —J. Ac: Till Alg. Syst. VI. p. 112, Tab. 3. fig. 91-92.-Kjellm. : 

 Beringhafvets Algfl. p. 54.— Setch.: Alg. Pribilof. p. 591. 



It is quite natural to find this species in the North Kuriles, 

 as Ruprecht reports it to have been collected at Yavina and 

 Lopatka, both at the southern end of Kamtchatka. 



Loc. Rashowa Island, North Kuriles. 



Monostroma arcticum Wittr. 



Monostr. p. 44. Tab. 2, fig. 8.— J. Ag.: Till Alg. Syst. VI. p. 106. 

 — Kjellm. : Alg. Arct. Sea. p. 299— De Tone Syll. Alg. I. p. 105.— 

 Collins : Ulvaceae North Amer. p. 13, PI. 41. fig. 6-7. — Setch. ct 

 Gakd.: Alg. N. W. Amer. p. 208. 



=Monostroma Grevillci var. arctica Rosenv. : Groenl. Havalgfl. p. 

 949, fig. 51.— Borges. : Mar. Alg. Faeroes, p. 495. 



= Monostrotna saccodium Kjellm.: Alg. Arct. Sea. p. 296, PI. 28. 

 fig. 1-10. 



=Monostroma cylindricum Kjellm.: 1. c. p. 295, PI. 30. 



= Monostvoma angicava Kjellm.: 1. c. p. 297, PI. 29. 



The present species is taken in the same sense as Collins 

 in Ulvaceae of North America. Although there are certain in- 

 termediate forms between this and the following species, as has 

 been pointed out by Rosenvenge (1. c.), it seems to me more 

 preferrable to mention the present species in an independent spe- 

 cific rank. 



Our plant was found epiphytic on Rhodomela lycopodioides 

 f. tenuissima Kjellm. 



Loc. Shimushu Island, North Kuriles. 



Monostroma Grevillei Wittr. 



Monostr. p. 57, Tab. 4. fig. 14.— J. Ag.: Till Alg. Syst. VI. p. 101. 

 —Kjellm.: Alg. Arct. Sea. p. 298— De Toni : Syll. Alg. I. p. 103.— 

 Rosenv.: Groenl. Havalgfl. p. 946, fig. 50.— Collins: Ulvaceae North 

 Amer. p. 208. 



=Entcromorpha Grevillei Tiiuk.: Note sur 1. Syn. Ulv. p. 25. 



