vol.i] Setchell— Gardner. — Algce of Northwestern America. 317 



Plocamium violaceum Farlow. 



Port Renfrew, B. C, Butler andPolley, No. 33! 

 Determined by F. S. Collins. 



Plocamium coccineum (Hudson) Lyngbye. 



On rocks and alga? in the upper litoral zone. Paget Sound, 

 Bailey aridHarvey (1862, p. 161) ; Strait of Juan de Fuea, B. C, 

 Harvey (1862, p. 171); Port Renfrew, B. C, Butler and Polley, 

 Xos. 34. 36, and in Collins, Holden and Setchell, P. B.-A., 

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

 39!, 73! 



Plocamium coccineum f. uncinatum J. Agardh. 



In the sublitoral zone. Sitka, Alaska, Saunders (1901, p. 

 436). 



Halosaccion glandiforme (Gnielin) 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 them 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 Gnielin 's name as the earliest. We shall not attempt 

 to give any complete view of the synonymy, at this time, but 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. coriaceum. Kadiak Island and 

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



Halosaccion glandiforme f . genuinum. Kadiak Island, Alaska, 

 Ruprecht (1851, p. 293). 



Halosaccion glandiforme f. Menziesii. Nootka Sound, B. C, 

 Ruprecht (1851, p. 293). 



Halosaccion glandiforme f. soboliferum. Sitka, Alaska, 

 Ruprecht (1851, p. 292). 



