vol. u Setchell— Gardner. — Algce of Northwestern America. 249 



Elachista fucicola (Velley) Areschoug. 



Ou Funis vesiculosus. Sitka, Alaska Bnprecht, (1851, p. 

 389). 



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

 tion with E. lubrica: "Ans dem nordlichen stillen Ocean ist mir 

 von dieser Gattung bisher nur E. fucicola Aresch. auf Halidrys 

 vesiculosa von Siteha bekannt." 



Falily CHORD ARI ACE JS. 



Myrionema strangulans Greville. 



On various membranous alga?. On blades of Nereocystis, 

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

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

 No. 924!, under M. vulgare; on Ulva, Sitka, Alaska, Saunders 

 (1901, p. 423); on Hednphyllutn sessile, Victoria, B. C, Tilden, 

 Xo. 356! under Phycocwlis fecunda; on Nereocystis, west shore 

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

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



Eudesme virescens (Carmichael) J. Agardh. 



Nut uncommon on rocks and eel grass in the litoral and 

 sublitoral zones. Shumagin Islands, Prince William Sound, 

 Glacier Bay. and Sitka, Alaska, Saunders (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 algse of various kinds and on rocks, in the litoral zone. 

 Iliuliuk, Unalaska, Alaska, W.A.S. and A. A.L.I; Uyak Bay, 

 Kadiak Island, Alaska, W.A.S. and A.A.L., No. 5080! ; Yakutat 

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



