.varci,. ioi7.] x. YENDO — NOTES ON ALGAE NEW TO JAPAN. VI. 81 



of the former in St. Petersburg does not point a near relation- 

 ship to the latter. 



Locality. Ochotsk and Pacific side of the southern Kuriles. 



Distribution. North-western coast of North America, from 

 Alaska to Washington. 



var. Laminarioides J. Ag. 



Spec. II, p. 253.— Id. : Epicris, p. 181. 

 = Iridsea laminarioides adttlta Bory : Voy. Coqu., p. 105, PL 11. 



fig. 1, D. 

 = Iridsea laminarioides Kutz. : Spec, p. 726. — Id,: Tali. Phyc. 



XVII, Taf. 8. tig. c-d. 

 = Iridxa heterococca Kutz. : Tab. Phyc. XVII, Taf. 11. 

 = Iridsea cordata Kutz. (non Turn.) : Tab. Phyc. XVII, Taf. 6. 

 -Iridsea laminarioides f. typica Setch. : Phyc. Bor.-Amer. No. XVI. 



— Setch et Gardn. : Alg. N. W. Amer., p. 298. 



This variety is pretty sharply distinguished from the others 

 by having elongated lanceolate, simple or furcated frond. The 

 lobes may be frequently broadened into ovate shape, tending 

 to approach to var. cordata. Yet the apices of the lobes are 

 more or less acute and never round as in the latter. 



In Japan, this variety does not reach to such a large size 

 as found on the Californian const, but measuring in average 

 15-20 cm in the total height. It is much more common in the 

 northern parts of the Japan Sea than on the Pacific side. 



Locality. Otaru Bay(!) ; Rebun Island(!) ; Sacchaliu. 



Distribution. West coast of North and South America, 

 from Puget Sound to Chili. 



Iridaea pulchra Kutz. 



In Bot. Zeitng., L847, p. 24. -Id.: Spec, p. 725. — Id. : Tab. 

 Phyc. XVII, Taf. 5, fig. c-d.— De Tom: Syll. Alg. IV. p. 194.— 

 Yknuo : K.-iis.-ui Shokubutsugaku, p, 603, fig 169 (fig. sinistr.). 



This species has been established by Kutzing in L847, on a 

 material from Kamtchatka. Since thai time no one seems to 



