56 
Prof. Moebius says :-— llarviaf tai nthe various 
collections very much rese ombled oy other, and may, fees to the 
sitblenowe of the threads (4-5 «) and the shortness of the joints, belong 
tothe kindred group of O. tenuis, which is known in Europe and North 
America. Probably, however, it is ee distributed.”’ 
Fig. 52: Portions of trichomes x 400.—Cooke, Lc. 
Hab.: Victoria Park, Burpengary, a L. Bancroft. Also in Europe. 
Order VI. COCCOGONEA, Thur. 
Fanny XII.—CHROOCOCCACE®, Neg. 
~Thallus mucous or gelatinous, amorphous, enclosing cells and 
ores irregularly disposed.— Cooke’s British Freshwater Alge, 
SYNECHOCOCCUS, Neg. 
Cells oblong, usually single, sometimes 2-4, connected in a series 
constituting a family. Cell-membrane thin ; cell-contents blue-green, 
now and then yellow or pale orange. Tegument absent. Division m 
one direction only.—Cooke’s British Frestwater Alge, 2 
eruginosus, Vay. Prof. Moebius’ note is as follows :—* Cells 
generally in pairs, more rarely single or arranged in groups of several, 
ca. fea 15-18 p» lon 
: Nines Waterhol M rtl : ; E col 
oy peeks erhole, Myrtle, Thos. L. Bancroft. Also in Europe 
MERISMOPEDIUM, Meyen. 
Cells globose, at the time of division oblong, rather thick, tegu 
moos continent re -8-16-32-64-128 associated in tubular fam grat of 8 
single stratum, forming a quadrate, pl f ne thallus— 
Cooke’s British Pacchwaler Alga, 21 1 = ane, free-swimming 
Cooke, | 
M. a » Neg. Cooke’s British ele Alge, 214 
Thallus more or ap ee limited, glaucous green, margin slightly satel 
crenate, families composed of 1 16-48-64 (rarely more) oval or gen 
cells; cell-contents pale blue-green. Size: Cells, ‘003-005 mm: 
families, ‘04-'05 mm.—Cooke, l.c 
Prof. Moebius gives the following note :—* Cellus 8p thieks 
families generally consisting of 64 cells. Seems to occur universal 
oe a Bow coke ed to Europe, North America, Brazil, Hawaii, 
ew 
ig. 58: Families magnified 400 diam.—Cooke, l.c. 
Hab.: Burpengary, Thos. L. Bancroft. 
CLATHROCYSTIS, Henfrey. 
Frond, a microscopic Belannens body, at first solid, then sacea 
ultimately clathrate (fragments of the broken fronds occurtl rring 
irregularly-lobed forms), Sih of a colourless matrix, in whieh me 
embedded innumerable minute cells, which ouape by bey 
rond as it increases in size. —Quar . Journ. Mier. 1885 a 
Cooke’s British Hecaleenter Alge, 21 
nes has observed the mere of zoospores in this genus — 
eG ae Peet, 
a. 
Ee 
