NO. 1 TAYLOR: PACIFIC MARINE ALGAE 203 



Aeodes (?) ecuadoreana n. sp.^^^ 

 Plant from a small holdfast to 75 cm tall or more and about as broad, 

 rose red, thin but fleshy in texture, sessile, foliaceous, the margin undulate, 

 slightly sinuate and with broad, indefinite lobes; thickness about 150 /a; 

 filamentous in construction, the lacunose medulla of slender anastomosing 

 filaments occupying nearly half the thickness; ganglionic filament junc- 

 tions absent ; the cortex of branched cell series, loose within, separated by 

 more than their diameters, the inner cells thin-walled, 9-14 fi diam., 

 occupying in one or two layers some 20 [i of thickness, the outer two or 

 three layers more close, occupying about 20 /x additional, the surface cells 

 4-6 fjL diam., with thick walls between the cells ; cystocarps 0.20-0.33 mm 

 diam., immersed and not distending the fresh thallus significantly, occu- 

 pying the medullary area with a few filaments surrounding them, dis- 

 charging by a pore on one side of the blade ; carpospores large and rela- 

 tively few in number, in groups, the mass attached laterally by a lobed 

 cell. 



Ecuador: Archipielago de Colon, frequent as dredged in 27 meters 

 of water off Post Office Bay, I. Santa Maria, nos. 34-292A, 34-295 

 (cystocarpic, TYPE), 19 Jan. 1934. Ibid., dredged from 55 meters, 

 no. 34-389 (cystocarpic), 29 Jan. 1934. 



GRATELOUPIA C. Agardh, 1822 



Plants of moderate to considerable size, foliaceous to bushy, the 

 branching generally pinnate and complanate, the branches flat; texture 

 fleshy to membranous, moderately firm; structurally showing a medulla 

 of slender filaments which anastomose radiately, surrounded by a jelly, 

 and a cortex of anticlinal moniliform filaments covered by a more or less 

 firm jelly; sporangia tetrapartite, immersed in the cortex; cystocarps 

 minute, scattered or in groups, immersed in the cortex and surrounded 

 by a thin pericarpic layer. 



KEY TO SPECIES 



1. Branching essentially pinnate G. filicina 



1. Branching dichotomous, with marginal proliferations pinnately 

 arranged G. cerrosiana 



119 Aeodes (?) ecuadoreana n. sp. — Plantae altitudine 75 cm, foliaceae, tenues 

 sed carnosae, margine undulato, lobos latos indefinitosque habente; crassitudine 

 150 |Li; filamentis medullaribus parietes tenues habentibus, iunctionibus ganglionicis 

 absentibus; cortice e filamentis anticlinalibus ramosis constante; cellulis superfici- 

 alibus 4-6 \i diam. per parietes crassos separatis; cystocarpis 0.2-0.33 mm diam. 

 Planta tvpica in loco dicto Post Office Bay, I. Santa Maria, Ecuador, legit W. R. 

 Taylor no. 34-295, 19 Jan. 1934. 



