MARINE ALGAE OF VANCOUVER ISLAND 
113 
Amphitrite point, Ucluelet, (93.) Macoun, 
Chantransia moniliformis Rosenvinge, 1909, p. 99, fig. 
23. Qualicum, Macoun. A diminutive form, even for this 
genus; specially characterized by the short, moniliform cells. 
It grew among other epiphytes on Polysiphonia mbulata. 
C. hallanbica Kylin, 1906, p. 123; P. B.-A., No. 1796. 
This species as found in Europe varies considerably; the Van- 
couver form is not exactly like any of the European forms but 
the differences are not sufficiently clear to justify a varietal or 
form name. 
C. Macounii n. sp. Csespitosa, monoica (interdum dioica?), 
ad 2 mm. aita, sine disco basali aut cellula distincta basali: 
filamentis rhizoideis affixa, inter fiia peripherica plantae hospitis 
eurrentibus; filamentis principalibus erectis, circa 8p diam.; 
cellulis circa 4 diam. iongis; ramis principalibus similibus, 
panels, Iongis, virgatis, ramulos multos, breves, saepe ad 
cellulas omnes rami gerentibus, alternates, oppositos vel 
secundos; ramulorum cellulis 1-1§ diam. Iongis; antheridiis 
ovoideis, 4 X circa axes breves a ramulis surgentes, dense 
verticillatis; cystocarpio sporas 2-3, 10 X 15g, gerente, 
ramulo insidenti vel ramuli locum occupante; sporangiis earpo- 
sporis similibus, in ramos et ramulos, pedieello unicellulari 
suffultis ; sporis indivisis. 
Tufted, monoecious (sometimes dioecious?), up to 2 mm. 
high, without basal disk or distinct basal cell; attached by 
rhizoidal filaments, running between the peripheral filaments 
of the host plant; main filaments erect, about Sy diam., cells 
about 4 diam. long; main branches similar, few, long, virgate, 
bearing many short ramuli, often one to each cell of the branch, 
alternate, opposite or secund; cells of the ramuli 1-11 diam. 
long; antheridia ovoid, 4 X 5p, densely whorled about short 
axes arising from the ramuli; cystocarp producing 2-3 spores, 
10 X 15 m , on or occupying the place of a ramulus; sporangia 
similar to the carpospores, on branches or ramuli, on uniceilar 
pedicel; spores undivided. On Mesogloia andersonii, Macoun. 
The antheridia were more abundant than the cystocarps in 
the material examined; in many individuals antheridia only 
were to be found, but plants with cystocarps bore also anthe- 
ridia. The descending rhizoidal filaments are few, and run 
