1 88 SAUNDERS [4 2 4] 



Small immature specimens of this plant are also found on the speci- 

 mens of Chordaria abietina, from Puget Sound, distributed by Miss 

 J. E. Tilden (Am. Alg., No. 348). 

 Chordaria flagelliformis (Muell.) Ag. 



Abundant in protected places in the sublittoral zone, attached to 

 rocks and to other algae. Sitka (i 22) ; Glacier Bay (96) ; Yakutat Bay 



( J 93> 2 3 T )- 



The plant has frequently been reported from the Atlantic shores of 

 Europe and America, the Baltic Sea, the Arctic Ocean, and the shores 

 of Kamchatka. 



Chordaria abietina Rupr. 



Attached to rocks in exposed places in the littoral zone. Sitka 

 (126) ? Prince William Sound (291) ; Shumagin Islands (380). 



This species is much less abundant than on the California coast and 

 all specimens collected are smaller than the average plant of the species 

 from that region. 



? Liebmannia sp. (Plate XLIX.) 



A single specimen of a Mesogloia-Wze. plant was collected at Sitka 

 (1420). It bears an abundance of unilocular but no plurilocular 

 sporangia, hence its exact position is in doubt. The arrangement 

 and structure of the axial tissue and the peripheral filaments closely re- 

 semble those of Liebmannia. 



Family RALFSIACE^E. 



Ralfsia deusta (Ag.) J. Ag. 



Sitka (169); Kukak Bay (324) Orca, Prince William Sound 



(267*). 



The plants were loosely attached to rocks in the sublittoral zone. 

 All specimens collected were sterile. 



Ralfsia clavata (Carm.) Farl. 



Yakutat Bay and Cook Inlet (413^). 



Forming light olive-green patches 5-10 mm. in diameter, which 

 finally produce an indefinite coating on rocks; in the sublittoral 

 region. 



Family LAMINARIACE^. 



Chorda filum (L.) Lamour. 



Found in the sublittoral region. Prince William Sound (273) ; 

 Popof Island (383). 



At both stations the plant was found in quiet sandy coves in great 

 abundance. 



