NO. 1 TAYLOR : PACIFIC MARINE ALGAE 111 



bicyclis the sporophylls are often pinnately divided, but they are numerous 

 and relatively short. In both E. arborea and E. bicyclis the lobes on the 

 lower sides of the primary blade have narrowed, upcurved, rather than 

 divergent bases. In both the mature sporophylls are conspicuously 

 wrinkled. From E. Masonii this species may be differentiated by its serrate 

 to somewhat pinnate, rather than bipinnately compound, sporophylls, for 

 in that species the blades are compound and the divisions in turn pinnately 

 divided or bipinnate, with the margins coarsely irregularly serrate. In 

 E. desmarestioides the blades are twice pinnately compound and the 

 leaflets coarsely, rather regularly serrate. In both the leaflets are con- 

 tracted to a very slender base, while in E. gdapagensis they are less con- 

 tracted, the base usually being about half as wide as the blade, but not less 

 than one third. The rachis in each of the Guadeloupe species is thick, but 

 there is no particular thickening in that from the Galapagos. Finally, one 

 must consider the resemblances which the specimens of the present collec- 

 tions show, in the younger examples, to forms of Ecklonia rndiata (Turn.) 

 J. Ag., especially f. exasperata (Turn.) De Toni (1895, p. 354) as 

 exemplified, in particular, by "Laminaria biruncinata" Bory (1926, pi. 

 10) from Chile. There is quite a bit of resemblance between his figure 

 and the youngest stages of the Galapagos plant, but in the latter the 

 surface does not bear spinose projections. In Ecklonia the primary blade 

 persists and the secondary blades are borne pinnately along its margins 

 until eventually the lower-formed ones may dominate it, while in Eisenia 

 the primary blade, while lobed, soon decays and the secondary blades are 

 produced from its lower lateral margins now become stalklike in the 

 meristematic area. Our specimens certainly belong in Eisenia, and one 

 cannot be sure that the single plant which Bory had might not likewise 

 have been an Eisenia rather than related to Ecklonia radiata. The writer 

 finds no resemblance between his plants and African, Australian, New 

 Zealand, or Japanese specimens, or to other Ecklonias. 



Ecuador: Archipielago de Colon, dredged from 27 meters at North 

 Bay, I. Marchena, Schmitt no. 310B-35, 3 Dec. 1934. Ibid., frequent 

 as dredged oflF Academy Bay, I. Santa Cruz, no. 34-305 (TYPE), 20 

 Jan. 1934. Ibid., dredged from 46-55 meters opposite Gordon Rocks, 

 Schmitt no. 317C-35, 8 Dec. 1934. Ibid., rare as dredged from 27 

 meters oflF Post Office Bay, I. Santa Maria, no. 34-293, 19 Jan. 1934. 

 Ibid., infrequent as dredged from 55 meters, no. 34-387, 29 Jan. 1934. 

 Ibid., dredged from 55 meters off Black Beach Anchorage, no. 34-391 J. 

 30 Jan. 1934. 



