i > tal nes 
| fonds with Fig. 8, tab. xiv., Ralfs’ Brit. Desm., which 
49 
the a are three times as long as broad. Moreover, this var. seen 
fro e shows only one prominence, whilst the typical form is 
vibe ‘with four of them.’ 
.44: a, living frond ; b, empty none c, end yiew—Cooke, Le. 
Hab.: Burpengary, Thos. L. Baner voft. Also found in pe. ° 
E. sinuosum, (Lenor) Ralfs. Cooke’s British Desmids. Frond 
‘about hg as long as broad; segments three-lobed, basal portion 
emarginate at the sides; end lobe somewhat dilated, its notch linear. 
ay 45 ooke, lv 
4 bis.: a, ¢, living fronds; 4, d, empty fronds ; e, end 
view.—Cooke, l.e 
Hab.: Still’ water , Victoria Park, W. J. Byram. panies Habitats : West- 
thoreland, Hants Wales, France, Sweden, Norway, an 
E.ansatum, (Ei.) Ralfs. Cooke's British Deamids, 70. Frond 
about twice as long as broad; segments inflated at the base, tapering 
upwards without sinuations into a neck, and not dilated; r rounded, 
its notch linear. Empty frond punctate, turgid in the middle. Size: 
surface of each half-cell, The membrane is finely punctate.” 
ig. 45, : ot living frond ; 4, c, empty fronds; d, side view; ¢, end 
nnew.—Cooke 
b. : Burpen ay y, Thos. L. Bancroft. Also found in Europe, Seat 
America, Greenland, ‘Siberia, Burma, Brazil, Japan, and New Zealand; 
: sequently very oe eae 
Hey Cooke’s British Desmids, 75. Frond 
: ty, minute, ac ne Ned Ee as long as broad, oblong; segments with 
re — basal portion bahier satire or bicrenate at the sides, slightly con- 
3 d beneath the ends; ends dilated, not protuberant beyond a 
with two 
es 5 its central notch acute, broad; transverse vie ews 
.. a Y — ends truncate, angles rounded. Size: Diam., 15-25 p 
as )3 diam., 24 1 (D.).—C 
a) 
rof, Mobis remarks :—‘ The Australian form completely corres- 
eg tibt oe 
p broad. Of this species, to 
frous varieties are assi igned, amongst — however, var. B 
a ot to be found in De Toni’s Sylloge (P (p- - A 
Z a, C, @, ea fronds ; 8, d, f, empty troncs. 
Byr am. Very ge somaite distributed — Europ’ Jamaica, No mericay 
1 Barns, Siberia, Hawaii, and Africa, 
