Жаа u 3 lkt Semi Ут РУБ" 7 7 m пи -Ра ол. 
ДО ATTE. ылы - а о. Жа 
STREBLONEMA 49 
old and partially decayed thalli of Spatoglossum crispatum, same 
locality, date, and number; also, same locality and date, on and 
in Prionitis decipiens and its parasite Lobocolax, Coker 144 p.p. 
The organs described above as ‘‘megasporangia”’ we have not 
observed in a certainly mature or dehiscent condition and it is 
possible that they represent immature or imperfectly developed 
states of the “тпісговрогатріа,” but intermediate forms of these 
organs are so rare that we believe that the species possesses two 
kinds of plurilocular sporangia or gametangia, such as are de- 
scribed by Sauvageau for various species of Ectocarpus, even 
though a study of living material may be necessary before the 
species can be accurately compared with any of the types of 
reproduction described by that author. 
The rhizoids or endophytic filaments penetrate the Spato- 
glossum as far as the medulla, surrounding the columnar or pris- 
matic cortical cells; in the Codium they are longer, though rarely 
as long as the peripheral utricles of its host. 
The exterior and erect filaments of the specimens on Prionitis 
“апа its parasite differ from those on Codium and Spatoglossum 
in bearing occasional short vegetative branches above the basal 
parts. 
Streblonema Сокет is perhaps as nearly allied to 5. Valiantei 
(Born.) De-Toni as to any of the hitherto described species, but 
differs in the usually coarser filaments which appear never to end 
in hairs and in the narrower more elongate plurilocular “‘sporangia”’ 
(the largest 16-27 и wide vs. 30—35 иіп S. Valiantei). Moreover, 
there аге no indications that 5. Valiantei has more than one kind 
of plurilocular “sporangia.” 5. Valiantei occurs at Biarritz on 
Cystoseira ericoides, on which it forms galls. Streblonema Совет 
is thus far known to occur only on Codium and Spatoglossum, 
on neither of which it forms galls. 
Ectocarpus cylindricus Saunders (Proc. California Acad. Sci. 
III. Bot. т: 150. fl. 16. 1898), which occurs on Cystoseira and 
Codium on the coast of California, is a taller plant (2-4 mm. vs. 
0.3-1.8 mm.) with coarser filaments (18-30 и vs. 13-25 и); its 
plurilocular sporangia are larger (80-200 и X 35-45 и vs. 38-105 и 
X 11-27 и), and apparently show no tendency to dimorphism; 
it has also unilocular sporangia, which are not known in Streblonema 
Cokeri. ZA OCT P 
