voh.-i] SefcheU-Gardner. — Alga' of Northiresfern America. 817 



Plocamium violaceum Pai-low. 



Port Renfrew, B. C, Bufler atal Pollfi/, No. 33! 

 Determined l)y F. S. Collins. 



Plocamium coccineum (Hudson) Lyngbye. 



On rocks and algfe in the upper litoral zone. Puget Sound, 

 Bailey and Harrfi/ (1862, p. IGl) ; Strait of Juan de Fuea, B.C., 

 Harvey (18(32, p. 171); Port Renfrew, B. C, Bntler and Polley, 

 Nos. 34, 36, and in Collins, Holden and Setcliell, P. B.-A., 

 No. 994d! ; west coast of Whidbey Island, Wash., N.L.G., Nos. 

 39!, 73! 



Plocamium coccineum f. uncinatum J. Agardh. 



In the sul)litoral zone. Sitka, Alaska, Saunder.s (1901, p. 

 436). 



Halosaccion glandiforme (Gmelin) Ruprecht. 



An extended study of the saccate species of this genus has 

 convinced us that, so far as the North Pacific species are con- 

 cerned, the characters depended upon for separation from one 

 another may be ascribed to difference of age, habitat, etc., and 

 it has seemed best, consequently, to consider t]nm\ all as belong- 

 ing; to one polymorphous species. We are not able even to divide 

 this mass of forms into satisfactory groups and follow Ruprecht 

 in adopting- (xmelin's name as the earliest. We shall not attempt 

 to give any complete view of the synonymy, at this time, l)ut much 

 of it may be found in Ruprecht' s able discussion of the genus 

 (1851, pp. 179-295). We shall arrange the references to locali- 

 ties in our territory under the specific names used as follows: — 



Halosaccion glandiforme f. coriaceinn. Kadiak Island and 

 Unalaska (?), Alaska, Ruprecht (1851, p. 292). 



Halosaccion glandiforme f . gen nin iini . Kadiak Island, Alaska, 

 Ruprecht (1851, p. 293). 



Halosaccioit glandiforme f. Menzies'n. Nootka Sound, B. (\, 

 Ruprecht (1851, p. 293). 



Halosaccion glandiforme f. soholifertim . Sitka, Alaska, 

 Ruprecht (1851, p. 292). 



