140 



ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 12 



tory filaments 1-2 mm long, sometimes in crowded, sometimes in 

 more remote rings; segments 3-9 mm between the forkings, 0.5-1.0 mm 

 diam., those below with several rings of filaments, those above commonly 

 with only one at the base; structurally of a medulla of longitudinal fila- 

 ments generally 12-16 fi diam., cortex unistratose, of large, rounded cells 

 32-50 /i diam., bearing one or two stalk cells which may be simple or 

 slightly expanded, or forked and bearing one or two terminal cells, which 

 are rounded, 28-44 /x tall, 20-28 ix diam., in surface view clearly crowded 

 and angular; extended assimilatory filaments cylindrical above, of cells 

 16-18 jn diam., 1-5 times as long as broad, resting on a swollen basal cell 

 about 90-120 /x long, 28-40 ii diam. 



Ecuador: Archipielago de Colon, dredged from 37 meters' depth off 

 I. Santa Cruz, Schmitt no. 316-35, 8 Dec. 1934. Ibid., dredged from 

 13-18 meters' depth of? Post Office Bay, I. Santa Maria, no. 34-364 

 (TYPE), 27 Jan. 1934. 



Galaxaura ramulosa Kjellman 



Plants 5-9 cm tall ; branches strongly calcified and rather rigid, dichot- 

 omous or subdichotomous ; axis of the internodes 2-15 mm long, 0.5-1.2 

 mm diam., villous, becoming denuded below, the extended assimilatory 

 filaments 0.8-1.2 mm long; structurally the axis with a medulla of fila- 

 ments 6-20 ju, diam., with a cortex of angular supporting cells 20-40 /a in 

 lateral and 30-32 ju, in radial diameter, each bearing one or two assimila- 

 tory filaments with one or two tumid basal cells 40-65 /x long, 20-40 /x 

 diam.; the shaft of the extended filaments 12-15 {jl diam. near the base, 

 18-20 ju, diam. above; short assimilatory filaments intermixed with the 

 long ones, of two cells, the basal similar to those of the long filaments, 

 40-64 ju, long, 20-36 ja diam., the terminal cells globose or subglobose, 20- 

 32 /i, diam. 



Kjellman 1900, p. 50, pi. 3, figs. 24-26, pi. 4, figs. 1-3, pi. 20, fig. 18. 



Panama: forming rare tufts on rocks in tide pools, I. Jicarita, no. 

 34-505 A, 20 Feb. 1934. 



Galaxaura subfruticulosa Chou n. sp.^^ 



Plants with large discoid holdfasts 1 cm diam., terete, 5-6 cm tall, 

 villous, becoming denuded below, irregularly dichotomously branched at 



83 Galaxaura subfruticulosa Chou, n. sp. — Plantae altitudine circa 5 cm; ramis 

 teretibus, 0.5-1.0 mm diam.; nodis constrictis; longioribus filamentis assirailatoriis 

 anulos interruptos formantibus cum cellulis basalibus tumidis, 90-120 n longis, 28- 

 40 n diametro et cellulis superioribus numerosis 16-18 (A diam., usque ad quinquies 



