Vol. ij Sefchell-Gardner. — Algce of Norihwestern America. 24!) 



Elachista fucicola (Velley) Arescliong-. 



On Fiiciis vesiculosus. Sitka, Alaska RuprfcJif, (IS.')!, p. 

 389). 



The only reference is that of Ruprecht, who says in connec- 

 tion with E. Iiihricd : "Ans dem nordlichen stillen Ocean ist niir 

 von dieser Gattung bisher nur E. fucirohi Arfsch. auf HaJhJnjs 

 ('PsintIos(( von Sitcha bekannt." 



Falily OHORDARIACE.i]. 



Myrionema strangulans Greville. 



On various membranous alga^. On blades of Nereocystis, 

 Cormorant Rocks, Uyak Bay, Kadiak Island, Alaska, W.A.iS. 

 and A. A. L., No. 5131! , in Collins, Holden and Setchell, P. B.-A., 

 No. 924!, under M. I'ulgare; on Ulva, Sitka, Alaska, Saioiders 

 (1901, p. 423); on Red op Jiy I Ik hi .sessile, Victoria, B. C, Tilden, 

 No. 356! under PJii/cora'lis fecioida; on Nereocystis, west shore 

 of Whidbey Island, Wash., X.L.G., No. 546!; on Ulva, East 

 Sound, Orcas Island. Wash.. X.L G., No. .529a! 



Eudesme virescens (Carmichael) J. Agardh. 



Not uncommon on rocks and eel grass in the litoral and 

 sublitoral zones. Shumagin Islands, Prince William Sound, 

 Glacier Bay, and Sitka, Alaska, Sdiiiiders (1901, p. 423). 



Castagnea divaricata (Agardh) J. Agardh. 



On mud flat, lower litoral zone. East Sound, Orcas Island, 

 Wash., N.L.G., Nos. 483!, 566! 



The habit and structure resemble very strongly those of this 

 species as it occurs on the coast of New England, but the para- 

 physes have fewer cells. They do have, however, the much 

 swollen end cell characteristic of this species. 



Leathesia difformis (L.) Areschoug. 



On algte of various kinds and on rocks, in the litoral zone. 

 Iliuliuk, Unalaska, Alaska, M".A.*S'. and A.A.L.l; Uyak Bay, 

 Kadiak Island, Alaska, ir.A.iS. and A.A.L., No. 5080! ; Yakutat 

 Bay, Sitka, Wrangell, and Annette Island, Alaska, and Victoria, 



