NO. 1 TAYLOR: PACIFIC MARINE ALGAE 69 



Codium santamariae n. sp.^^ 

 Plate 1, Figs. 14-16 



Plants slender and relatively small, the axes to 3-5 cm long, irregu- 

 larly dichotomously branched, the branches 1.0-3.0 mm diam., cylindrical 

 throughout; peripheral utricles clavate, the outer end slightly flattened, 

 diam. 90-190 jx, mostly 90-120 fi, about 1.5-2.0 diameters long; hair scars 

 absent or occasional near the upper end, the end membrane smooth, firm, 

 3-6 fi, rarely to 17 /* thick; gametangia fusiform to oval, single and 

 attached to the middle of the fertile utricle, 65-80 fi diam., 150-180 /* 

 long. 



These plants resemble C. isabelae except for the thin-walled vesicle 

 tips and somewhat smaller gametangia. The dredged specimens (no. 34- 

 362) may have been spreading rather than erect, since places on the 

 branches seem to show groups of hapteral rhizoids. One is tempted to 

 consider them small forms of C. unilaterale Setch. & Gard. (1924a, p. 

 710) but the plants are smaller, tend to be entangled, and seem to have 

 smaller gametangia attached lower on the fertile utricles. 



Ecuador: Archipielago de Colon, rare along the shore at Black 

 Beach Anchorage, I. Santa Maria, no. 34-226 (TYPE), 17 Jan. 1934. 

 Ibid., dredged at 13-18 meters off Post Office Bay, no. 34-362 J (fertile), 

 27 Jan. 1934. Guayas, on the rocky southeastern side of Pta. Santa 

 Elena, Salinas, no. 34-462, 8 Feb. 1934. 



Codium cervicome Setchell & Gardner, prox. 



Plants bushy, to 10 cm tall, irregularly dichotomously branched at 

 close intervals of 0.5-1.5 cm, the segments slightly cuneate throughout, 

 and a little compressed at the forkings, the angles rounded and wide, 

 diverging 90°-120°, the upper segments considerably more slender (1-2 

 mm) than the lower (2-4 mm), and more closely branched, the apices 

 blunt; peripheral utricles clavate, 140-260 fx diam., 2-3 diameters long, 

 with occasional hair scars near the rounded distal end, which has a 

 distinctly thickened smooth end wall reaching 12-20 fx thick; gametangia 

 spindle shaped, 38-65 fj. diam., 140-220 ju, long, attached near the middle 

 of the fertile utricles. 



Setchell & Gardner 1924, p. 712, pi. 32, fig. B. 



54 Codium santamariae n. sp. — Plantae ad 5 cm altitudine, graciles, irregu- 

 lariter dichotome ramosae, cylindricae; utriculis peripheralibus clavatis, 90-190 n 

 diam., 1.5-2.0 plo longioribus quam latis, membrana extrema levi, plerumque 3-6 

 \i crassitudine; gametangiis singulis, a fusiformibus ad ovata variantibus, 65-80 

 \i diam., 150-180 |ii long. Planta typica in loco dicto Black Beach Anchorage, I. 

 Santa Maria, Ecuador, legit W. R. Taylor no. 34-226, 17 Jan. 1934. 



