Vol. 11 SetcheU-Giirilner. — Algce of Northwestern America. 319 



in a nninber of very fine jets. Tins fact is mentioned by Turner 

 (1819, ]). 104) who quotes from the description of Tilesins of 

 Fucus saccatus, and by Ruprecht (1851, p. 288). This is pos- 

 sible only when the plant is young. As the plant becomes older, 

 the walls of the sack thicken, the color becomes darker, or else 

 fades, and the tip is torn away or eroded, and the whole sack or 

 a portion of it becomes filled with sand. All of these changes 

 due to age, and the variability in color and size have brought 

 about the considerable and vexatious synonymy. 



Halosaccion ramentaceum (L.) J. Agardh. 



In the litoral and upper sublitoral zones, on rocks and alga?. 

 Sannak Island, Alaska, Turner (1886, p. 85, specimen in Herb. 

 D. C. Eaton!); Kukak Bay, and Cook Inlet, Alaska, S((U)iders 

 (1901. ]). 486) ; Yakutat Bay and Glacier Bay, Alaska, Saunders 

 (1901, \). 486, under H. microsporwn) . 



We feel certain that H. microf<poriim is to l)e included under 

 //. rdiiH'iifarfinn and have, in consequence, placed the two sets 

 mentioned ])y Saunders under the one name, although we have 

 not seen any of his H. niirrosporiitn . 



Halosaccion Tilesii Kjcllnian. 



In the litoral zone. Kukak Bay, Prince William Sound, 

 Yakutat Bay, and Wrangell, Alaska, Saunders (1901, ]). 486). 



We have not seen an.v of the plants referred by Saunders to 

 this species. The species occurs in two forms at Bering Island, 

 Siberia, and as Kjellman has defined it, it is to be distinguished 

 from the preceding species by its di- to polychotomous branching. 

 Kjellman's figures (1889, i)l. 1, f, 16-19), however, seem to 

 represent a flat i)lant, tubular only at the base, and resemble 

 very much tlie i)lants we have referred to Bhodtp^Hii'Kt palmata f. 

 Sarniensis. 



Halosaccion coronatum (P. & R.) Kuetzing. 



The Dumontia coronata and the />. CJaea of Postels and 

 Ruprecht, given as occurring among alga^ of the Russian shores 

 of the North Pacific Ocean, are puzzles. Ruprecht (1851, p. 

 286) says that they show no algal structure and is inclined to 

 refer them to the animal kingdom, while 1). Jumttit P. & R. is 

 (Th)iopeUis fnrrata. 



