42 
M. Mahabulesl 3. Hobs. Prof. Moebius says: —“ Ihave 
only found one empty half-cell ‘ito which some filaments of Nostoc 
had pa astciated aay es. In sige i it corresponds to Nordstedt’s 
58; breadth at the constriction below the end lobe, 23 p eos 
from Europe, North America, India, Burmah, Bengal, Java il 
Zea . . 
Dalby, Darling Downs ; collection, May, 1893, Dr. Thos. L. Bancroft. 
(Pate X i eho: —This desmid has also been found in ponds at Herston road, 
Brisbane, ind at Blackstone, near Ipswich. 
STAURASTRUM, Meyen. 
muticum, Br¢éb. Cooke's British Desmids, i 
smooth, elliptic; end view showing slightly concave ae an 
or five rounded angles. Zygospore orbicular, spiny ; spines TO 
cleft ¥ — apices. Size: Length, 35 to 40 p; diam. 33 to 88 A~ 
Cooke | ‘ 19-20 » 
mer lowing is Prof. Moebius’ description :— Cells oi 
iad a from abo ove, er a with sides slightly ae Dest, | 
angles, corresponding to the figure in Ralfs' B oa 
Tab. 21, Fig. 4a and 4c. Per haps generally distributed; know" 
Australia (Raciborski).” 
Hab. : Swamp in Victoria Park, Brisbane, 3rd September, 1892, 
Bancroft 
(Plate X., Fig. 10). 
.dilatatum, Zhr. Cooke’s British Desmids, 162. a 
rough, fusiform, equal; end view with as r short, broad : 
entire ge Size : Diam. 20 to 28 p.— Coe 
Dr. Thos. I. 
neaclags Il | 
angles and — —_ ; the membrane covered with sma att 
which are arranged in transverse rows. Know n from Burope, § 
— Bibsria, Burmah, New Zealand.” raft 
os Mountains, September, 1892, Dr. Thos. L. Bane 
(Plate. Fig. 21.) Fe 
GLEOTRICHIA, Ag: prods 
richomes pseudo-ramose, distinctly vaginake} ; 
often aceite at the base, transversely plicate. Spores origins 
the lower part of ihe trichome.—Cooke’s British eames” . 
G. natans, Rabenh. Gibcws or angular, tabercuiot cht, ‘onl 
size and form, green, becoming brownish ; trichomes 7 
Sheath broad, here and there constricted, colourless = nome 
cee oblong, eae heterocysts subglobose. See, Oe 
at base, with sheath; 03 mm. diam . Brit fre 
a upward one. several times as seach Cooke’ i 
water Alge, 28 
