242 University of California Publications. [botany 



While this species seems to be a Myelophycus in Kjellman's 

 sense, yet it seems to us that the whole question of the relation 

 of this genus to Analipus and to Ghordaria is very unsatisfactory 

 as yet. Younger plants of this species are needed for study in 

 this connection, so that the region or regions of growth may be 

 more definitely established. Further discussion will be found 

 under Chordaria and Analipus. 



Colpomenia sinuosa (Roth) Derbes et Solier. 



Growing on other alga?, in the lower literal zone. Prince 

 William Sound and Yakutat Bay, Alaska, Saunders (1901, 

 p. 421); Port Renfrew, B.C., Tilden, No. 522!, But In- ami 

 Volley, No. 111! 



The specimens included here are evidently the thinner forms, 

 or may be even states due to age, which Saunders has considered 

 the typical form . While we cannot refer to the type to settle the 

 question, we believe that the thinner forms, whether single and 

 more regular in shape (€. sinuosa Saunders, 1896, p. 164, pi. 32, 

 f. 7, 8) or the aggregate expanded forms (C. sinuosa expansa 

 Saunders, 1898, p. 164, pi. 32, f. 4-6) are merely younger plants 

 which become thicker and darker brown as they become older 



Colpomenia sinuosa f. tuberculata (Saunders) Setchell and 



Gardner comb, now 



C. tuberculata Saunders, Phycological Memoirs, p. 164, pi. 32, 

 f. 1-3, 1898. 



On other algff> in the lower literal zone. Northeast shore of 

 Captains Bay, Unalaska, Alaska. W.A.8. and A.A.L., No. 

 4090! ; west coast of Whidbey Island, Wash., A.L.G., No. 106! 



This plant, as it seems to us from a study not only of material 

 from the northwest coast, but also from a study of Californian 

 specimens, is only a somewhat thicker, more or less distorted 

 form of C. sinuosa, and we feel that all the autonomy necessary 

 is indicated by a different form-name. 



Colpomenia sinuosa f. deformans Setchell and Gardner 



nom. nov. Plate 18. 



Scytosiphon bullosus Saunders, Phycological Memoirs, p. 163, 

 pi. 31, f. 1-7, 1898. 



