26 
This plant is said to be most frequently (in Europe) infested with 
the curious parasite Oyclops lupula, of Muller, which occasions the 
growth on the filaments of such extraordinary-looking appendages, in 
the midst of which the parasite resides.—Cooke, l.c. 
ig. 17: a,b, oogonia and antheridia, x 200; c¢, non-sexual 
spores x 200, after Walz; d, mature oospores, x 200.—Cooke, 
Hab.: Eagle Farm, Brisbane River, Thos. £. Bancroft. Also in Europe and 
America. 
M. Moebius remarks :—“ The organs of fructification were, for the 
most part, as yet undeveloped, yet isolated oogonia with ripe spores 
were observed. These are placed in pairs on short side-stalks, taking 
the antheridium between them. e main filaments had a diameter 
of 50-80 »; the oospores, with membrane consisting of three strata, 
were about 60 : 70 » in size.” 
Order III. PROTOCOCCOIDEA (Menegh.), Kirchn. 
Famiry VI. PALMELLACE (Decn.), Neg. em. 
Unicellular alge in the broadest sense. Cells either solitary or 
more or less numerous, associated in families, vegetating by cell- 
idi h are pro 
i aga ; 
ultimate generation of cells, Gonidia, when free, ciliate (usually with 
a pair of cilia), actively mobile.—Cooke’s British Freshwater Alge, 3. 
: ice’ tish Fresh- 
water Alge, Bieri 
quadricauda, (Zurp.) Bréb. Cooke’s British Freshwater 
Alge, 34. Cells oblong-eylindrical, each extremity obtusely rounded, 
2-48, narrowly united, either in a sing] double series, all straight, 
the outer cell at each end (and rarely some of the intermediate ones) 
ed at ea h extremi th ‘a recurved spine. Size: Cells, 
0085-01 mm. diam. to 022 mm long.—Cooke, l.e 
Prof. Moebius’ note merely contains the remark :—‘ In isolated 
jerome" Very generally distributed, but not yet assigned 
ralia. 
Pig 18: Cells magnified 400 diameters. 
ab. : Burpengary, Thos. L. Bancroft. Ponds, Victoria Park; Thomps! 
Estate, Brisbane; and Zillmere, W. J. Byram. Also in Europe, America, Asia, and 
New Zealand. 
CCELASTRUM, Neg. } 
De Toni gives the following general description :—“ Ccenobium 
globose, hollow within, formed of a single stratum of cells with spaces 
and perforations between them like a net, Zoogonidia first 188 all 
from the mother-cell, then forming a daughter colony within that ¥ 
itself, and finaly by the rupture of the mother-cell a free colony: 
, 
i 
q 
