33 
Prof. Moebius gives the fohaine description :—“ Cells, 27- 7 
thick and 13-2 times as long. The filaments are surrounded wi 
thick gelatinous sheath, with Which they are AGnKe as thick as without 
ie Calas ores spherical, 27-30 » thick. The dimensions agree wit 
ia 
own from Europe and North America. 
Hab.: Port Curtis district, May and June, 1892, Dr. Thos. L. Baneroft. 
4. cruciatum (Vauch.), Ag. Sterile rd aon o twice as long 
road. Zygospore deapcy. formed in one "Ea of two 
conjoined cells. Membra own and acabtioaties: Cells, 
028 mm. broad ; sypbapots. ‘04 mm. diam.—Cooke’s British Fresh- 
water, Algw, 79. 
Prof. Moebius gives the following description :-—“ Vegetative 
tells, 33-40 » thick and about as long, sometimes somewhat shorter, 
sometimes somewhat longer than the Siamate Pyaar spherical, 
aieaiat filling the cells. 
Known from aes North and South America. 
Hab.: Dalby, Darling Downs, Dr. Thos. L. Bancroft. 
Z, Rhynchonema, (Hansy.), De Toni. The following is Prof. 
Moebius’ description :—* The cells are 17 » thick and 3-5 times as 
long, with thin smooth lane The conjugation poe pe 
j 0 
place laterally, and ¢ ygospore lies directly over, in fron he 
septim of both the conjugeting cells. In the unripe zygospore (ripe 
®s were not observ e four chromatophores t 
clearly recognised spores are 33 p th k, which 
dimensions of the filaments.” 
ore perhaps only Pica from Bohemia. 
eet Dr. Thos. L, Bancroft. 
11.) 
Pats IX,, Fig | 
2 SPIROGYRA, L 
‘ 8. longata Saget -)s Kuetz. (?) als cells with the ends 
Gant 8-8 times long as_ broad, fee bands single or 
Tarely two, making 14-6 turns of a Jes Spores 14-2 time ng 
and ran: . . 
: usually longer than the s spore. Biss “Cells, ‘024-03 mm. a 
“*Bspore, “04-07 x ‘03 mm.—Cooke’s British Freshwater Algae, 92 
ius says:—‘‘ In this species the cells: in fructification 
‘pra 1¢ is at any rate nee ne this than any othe ies, 
ey which account T provisionally place it here. Vegetative cells 24-26 
: # long to 10 re as rtd ae a chlorphl band of 4-5 ssa age 
eeg-aha ing cells shorter, ores in somewhat swollen 
‘ long,” ped, somewhat ger 9 eit rounded ends 34 » thick, 60 i 
= species is known from Europe, North America, and Argentina. 
-* Glasshouse eter cox September, 1892, Dr. Thos. L. Bancroft. 
‘IX, Big. 10.) 
