870 THE JOURNAL OF BOTANY 
in Aug. 1891. I saw no more specimens till last user when I 
received from Mrs. Robertson some specimens of R. nitida from the 
same locality, and on examining them I sand many pie s of 
his or a closely-allied species of Nostoc rs. Robertson’s plants 
thallus, 
CHLOROPHYCES. 
. Prastnocuapus Lusricus Kuckuck, Bemerk. zur mar. algen- 
veg. von Helgoland, i. p. 261, fig. 28, Feb. 1894. Euglenopsis 
subsalsa haat n Ann. Bot. vol. viii. no. Mg Ae Monge Dec. 1894. 
In the 
from the Sound were growing. ‘These specimens a 
the figures and description of Huglenopsis subsaisa given by Davis in 
the Annals of Botany, while the older films and those presumably 
grown under unfavourable conditions exactly resembled Kuckuck’s 
figures of Prasinocladus lubricus. There can be little or no doubt that 
the two rah ae refer to one and ete’ same organism, Kuckuck’s 
Prasinocladus having the priority of publication by a few months. 
I do not fee aatialty confident, however, that the organism in 
question is really an alga, and not rather one of the amreer: 
protozoa. 
9. CLADOPHORA vosmcarg aps CORYNARTHRA Kiitzing, Phye. germ. 
p. 210; Id., Tab. Phye. vol. iv. ¢. 72, fig. 2. 
Va ar. SPINESCENS, N. var. Filaments densely poe heck 
forming a dark green, spongy, thorny width ; 
branches numerous, stiff, irregularly BusGE Stippinite; ichotonious 
or three or more in a whorl—branchlets, secund, bluntly pointed ; 
cells 40-120 » in diameter, two i five times longer than br ro 
Lying loosely fixed amongst the roots of Zostera, on a rather 
muddy bottom in 3-4 fathom water. Roundstone Bay, Connemara, 
March, 1883, Dr. Painter; April, 1899, H. H. Hanna, Weymouth, 
April, 1890; E.. M. Holmes. 
ariety differs from the type in the shorter cells, bluntly 
pointed branchlets mire irregular branching, and somewhat mor 
robust filamen 
10. C. corymerrera Kiitzing, Spec. Alg. p. 397; Id., Tab. Phye- 
iv. tab. 8. In pools near low-water mark, Berwick, ‘Oct. 1882 ; 
FE. Perhaps only a form of C. hamosa Kiitz., as Havel 
. it to be, but in any case a very pretty plant. 
. C. Nzzstorum Kiitz. Spec. Alg. p. 896; Id., Tab. Phye. iv: 
tab. e Var. humilis = C. humilis Kiitzing, Spee. Alg. p. 896; Id., 
Tab. Phyc. iv. tab. 4. In omer sandy-bottomed, sunny pools 
between ‘ide-marks, ee Aug. 1884, Swanage, Aus: 
1894 ; okt S$ species is closely related to C. rupestris, for 
dwarf specimens of ity it might be mistaken, if not closely 
