| Novi, 
4 fo a trifle thicker. Diameter in the 
37 ' 
G. Ralfsii, De Bary. Cooke’s British Desmids, 2. Joints cylindrical 
with the ends somewhat ciate 10 to 20 times as jong as bro 
rough on the surface with numerous minute scattered granules ; 
endochrome sometimes bifid at the extremities, usually with a pale 
space at the centre, and with a longitudinal series of Lehter-oolared 
dense corpuscles down the middle ; zygospore orbicular, smooth, plac 
si Ue conjugating joints, which are bent in an angular manner. 
Prof. Moebius gives the following note :—“ Cells 8-9 » broad, 
10-15 times as long, not attenuated at the ends, always more or less 
bent at an angle, not united in a series, membrane ners verrucose. 
o to oecur in Europe, Siberia, the Sandwich Islands 
Port ey District, May and June, 1892; Dr. Thos. L. Bancroft. 
Phe X., Fi 
HYALOTHECA, Ehrb. 
H. dissiliens (Smith), Bréb. Prof. Moebius says :—‘ This 
species is oranged noticed in my — ier work (see Botany Bulletin 
plerumque nudis.’ The visictatia observed on this oceasion pont in 
dimensions with the earlier; they pris however, in par 
gelatinous envelope which is about 42 aH thic 
alby, Darling Downs; collection, May, oe 8, Dr. Thos. L. nay riage 
Gymnozyga en —As before, aia : Botany Bulletin No. VL. p. 3 
ig. 3 
Nines X., Fi 
D. Bail DESM seem Ag. am sib 
eyi (Ralfs), De pinay isin atley 
Filaments triangular, twisted, jit Se unieod by each end of the _— 
margins only, excavated between the angles, the late 
Straight, not bicrenate—a chien teriees: which separates “it from the 
«TUS. 
other species. Diameter 25 yu, more or less.—Wolle’s Desmids of the 
| Amer., 27. 
x Prof. Moebiu us’ note :—“ Cells about 20, broad. Known from 
orth ‘Ga ati Brazil, Java, Senegal.” 
Bancroft. 
Pints mae Wovadbee, 1892, Dr. Thos. L. Bancroft 
DIDYMOIDE a Hansg. 
ebius Says : -—“*OF the species already noticed in my 
Prof. Mo 
: tarlier work the following were again observed: aide gracile, mre 
lineatum, Ehrb.; ©. Diane, Ehrb.; ©. parvulum, N®8-; 
“renbergii, Menegh.” ” | 
(Pla Fie dba , Fig. 18; C. lineatum, Fig: 18; C. Diana, former Bulletin 
consti eeu ,Ehrb. Cells, 500 long, of which the middle — 
tutes 200,” The thin ends very long, slightly curved, and a iid | 
middle 13 +. Wide y 
Alge =H Ss so already noticed by Raciborski amongst the Australian 
Burpengary, Noyember 1892, Dr. Thos. L. Bancroft. 
Ccioact Belcan Ng we) 
