PLEUROTAENIUM, Neg. 
P. Ehrenbergii (Ralfs), Delp. Prof. Moebius says :—‘‘ Also on 
this occasion again observed in specimens as much as 600 x long ; 
many show some ring-shaped constrictions on both sides of the 
isthmus, as Delponte figures it (Desmids Subalp., Tab. XX, Fig. 3). 
See Botany Bulletin No. VI., p. 46. 
(Plate X., Fig. 12.) 
cells smaller, 270 » lon 
y W.¢. Byram 
in Victoria Park, Brisbane. (See Botany Bulletin No. VL, p. 45, 
Fig. 39 bis.) He figures it according to the figure given by Nordstedt, 
and gives also the dimensions assigned by the same author. I have 
° 
i=] 
es L 
tward, very probably to the limit of the not very, clearly eg 4 
gelatinous envelope. The cells are 270 p long, at the isthmus 43-49, 
: the typical P. ovatum ; the membrane 
also is finely punctate. P. eee also known from Brazil, New 
Cape.” 
Hab. : Dalby, Darling Downs, Dr. Thos. L. Bancroft. 
(Plate X., Fig. 5.) tiie 
anslator’s Note——A reference to the drawing made from the specim 
Fe ie ee eats MN a ee een a Oe re te SMe ro age Be 
colle Vic ivéoend'-4 ese were furnished with the teeth-like 
Projections at the ends of the cell characteristic of the typical perma rege d 
rage and the dimensions so nearly agreed with his that : also occurs 
opted. ‘At will, therefore, probably be found that the typical form also 
‘ PLEUROTENIOPSIS, Lund. i lidally 
©. turgida (Bréb. Prof, Moebius says :—“ Alread’ 
Noticed ro x Botny Bulletin No. VL., p- 45, Fig. 39) ; on A 
°eeasion, moreover, found in somewhat larger specimens 10 lo e 
‘sto be observed that every half-cell contains several plate-shaped 
chromatophores with several pyrenoids.”’ 
Hab.: Port Curtis District, May and June, 1892, Dr. Thos. L. Bancroft. 
P. javani pius’ note is as fol- 
Ca (Nordst.), De Toni. Prof. Moebius, non a 
lows:—* Found with dhe foceuoig: from which it differs 4 acy 
oy and their somewhat different shape. _ In shape a =. ag ed 
coe le in all respects Cosmarium Jee): they are 125-130 » 
e Alg. nonn. mus. Lugd. Batavi, f. 107 ) ‘ 
Pooks 60 » broad, with an isthmus 85 m in preadth. Hitherto only 
ie own from Java.” 
: preceding. 
(Plate X., Fig. 9.) 
