* 
76 THE JOURNAL OF BOTANY 
66. S. pmeotatum Bréb. var. Brasitiense (Bérg.) Lutkem. 
[S. amenum Hilse var. brasiliense Bérg.] Hab. Glyder Fach, N. 
Wales, at 2200 ft. 
67. 8. scasrum Bréb. Hab. Moel Siabod, Llyn-y-cwm-ffynon, 
Llyn Bochlwyd, N. Wales 
68. S. enasum Bréb. Hab. Glyder Fach, N. Wales, at 2200 ft. 
69. S. echinodermum, sp.n. (Pl. 446, fig. 13.) S. parvum, 
paullo longius quam latum, profunde constrictum, sinu aperto 
acutangulo; semicellule angulato- elliptice, | angulis subtruncatis, 
dorso valde convexo, angu ulis et dorso spinis brevibus geminatis 
circiter 8 2 hate seriebus ‘tabas transversis spinarum trans semi- 
cellulam unamquamque ; a vertice vise quadrangulares vel penta- 
gone, isteribas savin aiceavin angulis acute rotundatis, mar- 
ginibus spinis brevibus obsessis, intra marginem unumquemque 
spinis geminatis 2. Long. s. spin. 81:5 »; lat. s. spin, 27 », cum 
spin. 30°8 »; lat. isthm. 10°5 p. 
Hab. Glyder Fawr, N. Wales, at 2700 ft. 
70. 8. Meson ieai (Bérg.) West & G. S. West. 8. rostellum 
Roy e 
Pier Capel Curig, N. Wales. 
71. S. GRanuLosum trans. ey Ralfs Brit. Desm. 1848, p. 217; 
West & G. 8. West in Trans . Irish Acad. 1902, f. 45, tit, 
f. 24; Desmidium granulosum rahe. 1889 ; Phycastrum granulosum 
Kiitz. Spec. Algar. 1849, p. 180. S. lunatum Ralfs var. subarmatum 
West in Journ. Roy. Micr. Soc. 1894, p.10, t. ii. f.47. Zygosporse 
globose, spinis fagia delicatulis obsess@, apicibus spinarum latis- 
sime bifureatis. Diam. naan sine spin. 82°5-34°5 », cum spin. 
62-65 uw; long. _ 13°4 
ab. Near Crowan, bee or 
Roy and Bissett have figured the zygospore of S. granulosum 
from Scotland; but the figure is very indistinct, and specifically 
unrecognizable. 
72. S. pracnycerum Bréb. Hab. Llyn Idwal, N. Wales; near 
Senens, Cornwall. 
78. 8. Anattnum Cooke & Wills. Hab. Llyn-y-ewn-ffynon, 
N. ae 8. 
. 8. vestirum Ralfs. Hab. Llyn-y-cwm-ffynon, N. Wales ; 
St. That Cornwall. 
75. 8. Knorinots (HbccaiG Lund. Hab. Llyn Ogwen, N. Wales. 
76. 8. Opuiura Lund. Hab, Llyn Ogwen, N. Wales 
The specimens were almost typical. S. Ophiura var. cambricum 
-is known to occur abundantly at Capel Curig. 
77. 8. Anacune Ralfs. Hab. Lilyn-y-cwm-ffynon, N. Wales. 
“78. Conrerva a C. in cespitibus, densissimis, flavo- 
brunneis; filis angustis; cellulis diametro 9-14-plo longioribus, 
cy. lindricis ; itiitiehephiceis 1-8, parietalibus et irregularibus, sine 
pyrentidibass membrana cellularum tenui sed firma. Crass. fil. 
5-5-4 p. (Pl. hg wee 14-17.) 
_ Hab. South of Helston, Cornwall; St. Mary’s, Scilly Islands. 
