48 ECTOCARPACEAE 
15. 1892) in Sebdenia ceylanica from New Guinea has very dif- 
ferent plurilocular sporangia or gametangia, which are finally 
about 4 cells broad and 8 cells long; hairs are also manifest. In 
the case of the Peruvian plant we have been able to find only one 
possible hair protruding from the cortex of its host and even that 
we have been unable to connect positively with the Streblonema. 
PLATE 6, FIGURE B.  Streblonema radians 
Photograph showing the dark spots or patches caused by the Streblonema as they 
appear in a fragment of a dried specimen of its host, Grateloupia Сийетае procera, 
natural size, 
PLATE II, FIGURES 8-13. Streblonema radians 
8. Peripheral filaments, with plurilocular sporangia protruding very slightly from 
urface of the host plant. 
9. Two normal plurilocular sporangia of four cells each. 
то. An irregularly branched ог proliferous plurilocular sporangium of five cells. 
тт. A subumbellately branched plurilocular sporangium of five cells. 
12 and 13. Portions of the Streblonema filaments from the medulla of the host plant, 
showing chromatophores, etc. 
All of the figures are drawn from the type material (Coker 17 p.p.). Figures 
8—12 are enlarged 675 diameters; 13, 390 diameters. 
Streblonema Cokeri sp. nov. 
Forming more or less penicillate tufts I 50-800 и broad ог 
widely confluent, destitute of hairs; endophytic filaments mostly 
50-400 и long, 8-22 и wide, often freely branched апа usually 
interwoven and closely coherent; exterior filaments mostly 0.3-1.8 
phous, one set short and slender, the other longer and coarser; 
cells 13-35 и long, mostly 1-2 times as long as broad; chromato- 
phores rather few, irregularly discoid or somewhat ribbon-shaped, 
commonly anastomosing and often confluent, occasionally numer- 
ous and rather regularly discoid; plurilocular “sporangia” di- 
morphous, the two forms on the same individual, terminal on the 
elongate-ovoid to conic-cylindric, 38-102 и X 16-27 u, often 
curved, subacute or obtuse, mostly 4—6 loculi in width, the loculi 
2-4и in diameter; megasporangia (?) elongate-ovoid, fusiform or 
filiform, 38-105 u X 11—14 и, I or 2 loculi in width, the loculi 5-11 
шіп diameter. [PLATE II, FIGURES 1-7.] 
On and in Codium tomentosum beruvianum, Islands of Lobos 
de Afuera, March 27, 1907, Coker 145 p-p. (type); оп and in 
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