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ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 12 



tall, 56-80 II broad, colorless, the intermediate cells subglobose or irregu- 

 lar to columnar, the surface cells forming a continuous chromatophorous 

 epidermis, in surface view polygonal, in section lenticular to hemispheri- 

 cal, 12-24 /i, high, 20-35 /u, diam.; the epidermis bearing small columnar 

 to subfusiform cells on the thallus margins, 12-20 /a diam., 32-40 /* tall, 

 rounded to submucronate. 



Kjellman 1900, p. 81, pi. 16, figs. 11-16, pi. 20, fig. 24. 



Mexico: Nayarit, rare as dredged from 22 meters' depth at sta. 970 

 near I. Maria Magdalena, Las Tres Marias, no. 39-652, 9 May 1939. 



Galaxaura angustifrons Kjellman 



Plants to 9-10 cm tall, dichotomously branched, the angles wide, 

 branches at the base subterete, slightly villous, above complanate, the 

 segments 5-7 mm long, 1.5-2.0 mm diam., when diy with the margins 

 appearing slightly thickened ; proliferations scanty, each at the base with 

 a tuft of assimilatory filaments 0.5-1.0 mm long; medullary filaments 8- 

 16 II diam., cortex tristromatic, the cells of the inner layer subglobose or 

 angular, 40-100 ii diam., 30-50 /* radial length, those in the intermediate 

 zone subglobose to ovate, 24-28 /x diam., cells of the surface or epidermal 

 layer loose, 5-6-gonal, 20-30 ju, diam. in surface view, in section appearing 

 hemispherical or lenticular, 16-24 ju, in radial length ; extended assimilators 

 15 II diam., the cells 2-3 diameters long, the basal cells obpyriform or 

 elongate elliptical, 28-30 /x wide, about 48 ju, radial length. 



Kjellman 1900, p. 82, pi. 15, figs. 11-25, pi. 20, fig. 27. 



Ecuador: Archipielago de Colon, dredged from 9-20 meters near 

 Eden I., Conway Bay, I. Santa Cruz, Schmitt no. 81B-33, 16 Feb. 1933. 



Galaxaura intermedia Chou n. sp.^^ 



Plants bushy, to 23 cm tall, the holdfast broad, below the axis caules- 

 cent and villous, 2 cm long, 3-5 mm thick at the base ; above dichotomous, 



84 Galaxaura intermedia Chou, sp. nov. — Plantae deliquescentes, arborescentes, 

 minus quam 23 cm altae a disco ad substratum adfixae; caudice partibusque 

 ramorum basalibus subteretibus, villosis; ramis sursum compressis, glabris; seg- 

 mentis linearibus vel cuneate linearibus, continuis, 1.0-2.5 cm longis, 1-2 mm latis, 

 gelatinosis, coriaceis, vix calce incrustatis, siccatate fragilibus, inconspicue trans- 

 verse striatis, marginibus neve incrassatis neve involutis; filamentis medullariis 

 10-12 n diametientibus, cortice parenchymatoso, 3- vel 4-stromatico, minus quam 

 100 (.1 crasso, cellulis intimis quam aliis grandioribus, ovoideis vel subrectangulari- 

 bus, 28-40 ^l altis, 50-70 \i diametro, intermediis hypodermaticisque parvioribus, 

 subglobosis, diam. 20-40 \i, in sectione frondis transversal! lunatis, 10-18 |.i altis, 

 16-24 n diam.; liberis filamentis assimilatoriis basi 16 n., diam., ad apicem versus 

 18-20 \i, cellulis isodiametricis vel interdum duplo longioribus quam latioribus, 

 absque vel cum cellulis tumidis basalibus; conceptaculis globosis, in thallo 

 immersis, ostiolis ad superficiem aperientibus. Rami carpogoniales desunt. Planta 

 tj'pica in loco dicto I. Santa Maria, Ecuador, legit W. R. Taylor no. 34-213, 17 

 Jan. 1934. 



