27 
e following note is given by Prof, Moebius:—“ The 
observed Volvoxr-sphere does not permit the particular cells to be seen 
_ with sufficient distinctness to render possible an exact determination. 
Itcontains several parthenogonidia, and has a diameter of 260 p. 
_ Since Volvoa globator, which is cited in Bailey’s list, has as a general 
tule larger colonies (680-800 ), and on the other hand the diameter 
of the colonies mentioned for V. awreus is 200-460 p, the alga observed, 
_ Perhaps, belongs to the latter species.” 
E. 
Vietoria Park, Brisbane. Since the publication of that Bulletin, Mr. W. J. Byram 
lus found that the ponds in Bowen Park perfectly teem with this beautiful alga 
fom about the month of November until June. As far as present observations go, 
PANDORINA, Ehrb. 
| Cenobium globose or subglobose, invested by a broad colourless 
hyaline tegument ; cells green, granulose, globose (16, 32, or 64), 
included within a single rather thick membrane, bearing two vibrating 
t a red spot, aggregated in a botryoid manner.— 
O) 
; tcillated, permanently active gonidia, arranged in several circles 
Petpendicular’ to the long axis of the frond. The dia os 
et : beak-like process, » red spot, and a pair of cilia 
_ Which project through the substance of the front to form locomotive 
oats upon its surface. Reproduction—I., by the conversion of each 
oe tum into a new frond within the parent, mass; IT., by a 
sities of the gonidia into encysted resting spores, which are se 
= ne! subsequently germinate to produce new fronds.” - 
P-morum, Lhrb. Ccenobium globose. Cells green, 16-32, arranged 
the sna periphery. In the forms which produce the resting spores 
hee lls are crowded together in the centre. Resting spores, after 
tone encysted, bright-red. Size: Canobium “2 mm.; ce 
Poe Th mm. diam.—Cooke’s British Freshwater Alge, 68. te oes 
Fred, € following notes are given verbatim from Cookes Dritis 
ois either 16, and then arranged in four circles of 4 or 32, and 
d8p ci 
i Y- ” 
gsheim, in his memoir “On the Pairing of Zoospores 
ticht, Royal Academy Sciences, Berlin, October, on 
mm “ Annals of Natural History,” vol. v., 1870, P. a 
*pecial reference to this species. He says that ie 
place in Pandorina, as in other multicellular 
