THE ALG^ 421 



paraphyses are much broader and shorter, and the sporangia broader 

 than in M. ccespitosa and the central layer of tissue composed of only 

 2-4 rows of cells while in M. ccespitosa there are 10 or more rows. 



The plant so closely resembles Scytosiphon lomentarius in color 

 and general appearance that it has probably been passed over by col- 

 lectors. It is however somewhat firmer in texture and not at all con- 

 stricted. Specimens collected from Puget Sound averaged much 

 smaller than those collected farther north. From Sitka northward the 

 plant is more abundant than Scyiosip/ioti lomentarius. 



Scytosiphon lomentarius (Lyngb.) J. Ag. 



Abundant, Puget Sound; Annette Island (40) ; Glacier Bay; Sitka 

 (892) ; Yakutat Bay (2290) ; Kukak Bay; Shumagin Islands (360). 



Scytosiphon lomentarius complanatus Rosenv. 

 Juneau; Glacier Bay (98). 



Scytosiphon buUosus Saunders. 



On rocks in the sublittoral zone, Sitka (145) ; Cook Inlet (408). 



Heretofore this species was known only from the type locality, 

 Monterey Bay. (Am. Alg. 251.) 



Phyllitis fascia (Muell.) Kuetz. 



Abundant in protected places in the littoral zone from Puget Sound 

 to the Shumagin Islands. Annette Island (41); Glacier Bay (94); 

 Yakutat Bay (220) ; Kukak Bay (319) ; Cook Inlet (409, 410). 



The specimens from the northern localities are much larger than the 

 average plant from the California coast and the Atlantic coast of 

 North America. Those from Cook Inlet are 20-35 cm. long and 

 2-4 cm. wide. 



Colpomenia sinuosa (Roth) Derb. & Sol. 



On Cystophyllum lepidum, Prince William Sound (268) ; Yakutat 

 Bay (420). 



This widely distributed and usually common species was seen but 

 twice during the trip. It is common in quiet coves from Puget Sound 

 to southern California. 



Coilodesme linearis sp. nov. (Plate xlviii.) 

 Phycotheca Boreali-Americana No. 824. 



Plant linear, tubular, olive brown, 8-20 cm. long, narrowed below 

 to a short stalk (1-2 mm. long) ; tissues thin and delicate, composed 

 of three to four layers of cells ; unilocular sporangia scattered singly 

 throughout the plant, 11-14// wide, 15-20/^ loi^g* 



On Cystophyllum lepidufn^ Popof Island (399) ; Kukak Bay 



