NO. 1 TAYLOR: PACIFIC MARINE ALGAE 145 



the angles acute, the lower segments subterete and villous, the upper ones 

 complanate, glabrous, 1.0-2.5 cm long, 1-2 mm wide, little calcified and 

 carnose membranous, the margins neither involute nor much thickened, 

 near the tips about 1 mm wide; thickness 300-400 [x (decalcified) ; medul- 

 lary filaments 10-12 /a diam., cortex 3-4-stromatic, the innermost layer of 

 subglobose or angular cells 50-70 (x diam., 28-40 ju, radial length ; cells of 

 the intermediate layers more or less globose, 20-40 ju, diam., surface or 

 epidermal layers thick walled, 5-7-gonal and 12-20 ju, diam. in surface 

 view, in section hemispherical to lenticular, 10-18 fj. tall radially; extended 

 assimilatory filaments 16-20 /* diam., the cells 1-2 diameters long, the 

 basal cells somewhat tumid or not differentiated. 



Ecuador : Archipielago de Colon, frequent in the lower littoral near 

 Black Beach Anchorage, I. Santa Maria, no. 34-213 (TYPE), 17 Jan. 

 1934. 



GLOIOPHLAEA J. Agardh, 1870 



Plants bushy, dichotomously branched, the terete branches uncon- 

 stricted ; structurally showing an axis of longitudinal filaments bearing a 

 cortex which at first shows a surface layer of utriculiform cells, which is 

 gradually displaced by anticlinal assimilatoiy filaments with larger cells 

 within, smaller without ; spermatangia scattered over considerable areas of 

 the plant ; cystocarps scattered in the inner cortex, enclosed within a few 

 layers of pericarpic filaments, discharging by a narrow pore. 



Gloiophlaea confusa Setchell 



Setchell 1914b, p. 118, pi. 14, figs. 44-47. 



Ecuador: Archipielago de Colon, dredged at sta. 157 from 16-32 

 meters' depth, Tagus Cove, I. Isabela, no. 34-1 85 j 15 Jan. 1934. 



SCINAIABivona, 1882 



Plants bushy, repeatedly dichotomously branched, firmly gelatinous, 

 with an obscure axial strand ; structurally showing this strand of slender 

 filaments surrounded by a loose filam.entous medulla, and a cortex of two 

 layers, the inner or hypodermal layer of large chromatophore-bearing cells 

 and the outer or epidermal layer of coherent colorless cells with a few 

 columnar colored cells intermixed; asexual reproduction by monospo- 

 rangia formed between the epidermal cells ; sexual reproduction by sperm- 

 atangia in small superficial sori, and by carpogenic branches, three celled, 

 borne on the outer medullary filaments, the cystocarps small, immersed, 

 with a filamentous pericarp, the carpospores discharging through a small 

 pore. 



