** Stem without rings.
Vi-ococcus A llm a n n i. Hass. t. 80, f. 3.
Cells elliptical, blood-red; stem short, rather club-shaped,
colourless, smooth.
Rabh. Alg. iii. p. 322.
Hmmatococcus Allmanni, Hass. Alg. p. 322.
In springs a t Knares borough.
Plate IV . fig . 3. a, cells considerably magnified, after Hassall; h,
cells further magnified.
Urococcus c ryp tcp h ilu s. Hass. t. 80, f. 1.
Cells small, oval, rarely globose ; tegument very large, confluent
with the short ringless stem.
Eabh. Alg. iii. p. 82.
Hcematococcus cryptophila, Hass. Alg. p. 324.
Hcematococcus sanguineus, Harv. Man. p. 181.
Palmella cryptophila, Carm. in litt.
On stalactites lining a cavern in a quartz rock.
“ Forms wide patches externally of a brick-red colour, but within
whitish, breaking up easily into the numerous separate portions of
which each mass is formed. The colour resides alone in the granules ;
these terminate the superior extremity of the mucous prolongations,
which are colourless, and arranged almost entirely side by side. The
granules or cells are several times smaller than in U. A llmanniy—
Hassall
Plate IV . Jig. 4. «, cells considerably magnified, after Hassall;
cells further magnified.
\
Genus 5. SCHIZOCHLAIKIYS. .gr. (1849.)
Cells globose (or ovate), either single, or 2-4 associated in
families; tegument lamellose, as age advances dividing regularly
in 2-4 equal parts, some time adhering by means of a hyaline
colourless mucous. Division in one or two directions. Zoogonidia
produced by a repeated division of the cell contents.
At present represented in Europe by a single species.
“ The globular cells of this little Alga produce a hyaline oell-mem-
brane, which becomes removed to some distance from the green body
of the cell by subsequent secretion of fluidish jelly ; soon, however
(probably from endosinose), becoming unable to withstand the expansion
of the jelly, it splits in the direction of an equatorial circle, by a
clean line, into two similar halves, or if the dehiscence takes place by
two circular lines, cutting at right angles, into four similar pieces.
This splitting and peeling of the membrane either coincides with a
division of the internal cell-mass, or it oconrs without any such division.
By frequent repetition of this process the cell gradually becomes
surrounded by an accumulation of old fragments of the membranous
shell, which are held together by the extremely transparent jelly set
free. The division of the cell may be either a simple halving, in which
case each part is immediately clothed again with a hyaline oell-mem-
brane, or double, through the cells produced by the first division separating
immediately into two cells, without previously acquiring a coat
of cell-membrane, and therefore without skinning.”—B raun Bejuvenes-
cence,p. 181.
S chizo ch lamy s g e la tin o sa . B r .inK u tz . Sp. p. 891.
Cells globose ; contents green, granulose.
S i z e . -Ol-'OISS mm. (Rabh.).
Kutz. Tab. vol. vi. t. 70. Braan Rejuvenescence t. 2, f. 43-
50. Eabh. Alg. iii. 32. Eabh. Exs. No. 103.
In peaty swamps, moor pools, and boggy ditches.
Plate I I I . jig . 6. Cells magnified 400 diam.
Genus 6. PAIiBIELIiA. Hyngh. (1819.)
Cells globose, oval, or oblong, surrounded with a more or less
thick integument, generally very soon confluent into a firm or
soft jelly. Thallus shapeless. Division of the cells alternately
in all directions.
* Mostly green.
P a lm e lla muco sa . Kutz. PJiyc. Gen. p . 172.
Thallus expanded, gelatinous, deformed, olivaceous-green ;
cells large, nearly equal, pale green, delicately g ra n u la r; tegument
very thin, soon diffluent.
S i z e . Cells '015 mm. (Rabh.), 'OOI-'OII mm. (Kirch.).
Eabh. Alg. iii. 33. Kirch. Alg. Schl. p. 110.
Merettia mucosa, Trevis. Alg. p. 46.
On stones in streams.
Plate V. fig . 1. Portion of thallus with cells magnified 400 diam.
P a lm e lla h y a lin a . Breh. Alg. Fal. p . 39.
Thallus gelatinous, irregularly expanded, g re e n ; cells very
minute, crowded ; tegument almost homogenous with the gelatinous
thallus, very soon diffluent.
S i z e . Cells ’OOOS-'OOl mm. (Rabh.), -00075-'001 mm.
(Kirch.).
Eabh. Alg. iii. 33. Rabh. Exs. 1525. Kirch. Alg. Schl.
p. 110.
Coccochloris hyalina, Meneg. Nost. p. 66.
In stagnant water, and bogs.
The species called Coccochloris hyalina by Hassall (p. 315) is Bomalo-
COCCUS HassalUi, Kutz., one of the Phycochromophycecd, and not the
present. Perhaps the two may have been mixed up.
Plate V.Jig. 3. a, part of thallus, X 400; &, portion X 800 diam.