36 
S. crassa, Kuetz. Sterile cells with the ane truncate, equal 
or twice as long as broad. Chlorophyll- -bands 4 or more, making 
3-12 turns. Zygopores broadly aiid obtusely pal membrane re 
Sporiferous cells persistent, not swollen. . Size . Cells °12-15 m 
diam. (Rabh.), ‘15 mm. diam. (Petit) ; eygoepore Ae ‘15 diam. Cat, 
13 x12, “14x ‘12, 16 x ‘12 mm. (M.C.C.).—Cooke’s British Fre 
water Ape, 
long or pedis eb than the diameter. Those which have just 
eee shorter than the diameter, hardly perceptibly constrictes 
the partition-wall ; they possess 4-6 chlorophyll-ban nds with 1-14 3 
Sn as The membrane is thin, and the species 18 distinguished 
by this characteristic especially from Sp. setiforms with thick, stratified 
mbrane. It is, moreover, nearly related to Sp. maxima from which 
iti is distinguished by the zygotes not being em shaped, but egg- -shaped. 
Known from Europe, North and South America. 
Hab.: Port Curtis District, May and June, 1892, Dr. Thos. L. Bancroft. 
(Plate IX., Fig. 6. 
bellis (Hass), Cronan (?). Sterile cells with the ends trune® i 
and usually 14 times very 3 times) as long as broad; chloro rophy!! 
bands 5 to 6, making } or 1 turn, or nearly ak Spores orbiculat, 
depressed, with the membrane punctate or porose, chestnut, colow: 
_ Sporiferous cells persistent, swollen. Germinating plant ego 
radical cell short and subcylindrical. Size: Cells, ‘07-" art 
zygospores, ‘07-08 mm. diam., ‘-05--06 mm. thick.—Cooke’s "Bi 
hwater Algwe, 88 
The following is Prof. Moebius’ description : ere ee hoc 
terile. Vegetative cells 65-70 p thick and 3-4 times as long, ™ 
about 6 ae ee which are sometimes almost 8 atraig isnt 
other ti m any a revolutions. The filmer) 
uished by a thik gelatinous sac (as much as thet 
and this togethe the ment in dimensions errs 
acteristics ake ‘i t ain i 
I have not ob a ao pakke gpieuous 
= is known from oe and North America. 
: Port Curtis District, May and June, 1892, Dr. Thos. L. Baner‘f 
ease IX,, Fig. 7.) 
GONATOZYGON, De Bary sical, of 
Filament cylindrical ; joints elongated, aah cylin ate; 
without a cons tion ; em 
cate; 
1 arrow-fusiform triction or inflation ; as reacted : 
‘is ochrome a single central, longitudinal, undulatory, CP. | the 
u 
proces Z ore placed betwee 
seep feinta Aaohers “itih, De eae 
