NOTES ON FRESHWATER ALG 75 
granulo distincto ad medium utrobique et granulo singulo ad laterem 
unumquemque polorum ; a latere vise subglobose granulo singulo 
ad medium utrobique; pyrenoidibus singulis. ine 23-24 uw; lat. 
. ; ° 1 . 5p 
This Cosmarium was abundant from several of the collections 
in the above neighbourhood, and we have never observed it from 
any other i of the British Islands, 
46, C. appreviatum Racib. Hab, Lilyn-y-ewm-ffynon, Llyn 
Ogwen, N. Wales ; near Crowan, Cornwall. 
47. C, pyemmum Arch. Hab, Lilyn-y-cwm-ffynon, N. Wales. 
48. C, Spuacnicotum West. & G.8. West. Hab. Llyn Bochlwyd, 
N. Wales. 
49. C. synruisomenum West. Hab. Llyn Idwal, N. Wales. 
50. C. cycricum Lund. Hab. Llyn Idwal, N. Wales. 
2 C. susunputatum Wille, Hab. Llyn Idwal, N. Wales. 
. C, Exc cae a Roy et Biss. Hab. Moel Siabod, Llyn 
lawal, Llyn Cwlyd, N. Wales. 
58. C. cosratum Nordst. Hab. Llyn Idwal, N. Wales. 
54, C. commissuraLe Bréb. Long. 29-5-83 p; lat. 42-45 p; 
lat. isthm. 9-6-12 p; Seg 24-25 4; diam. zygosp. sine a 
40-42°5 pw, cum spin. 75-83 pz 
Hs Pools near gt Tuer ‘Cornwall ; abundant with rd Mee 
e never met with this species in abundance from 
part of ihe British Islands except Cornwall. It seems pa 
distributed in the western districts of that county. 
55. C. tracnypLeurum Lund. Hab. Llyn-y-cwm-ffynon, N. 
Wales. 
56. C. ortHosticnum Lund. Hab. Llyn-y-cwm-ffynon, N.Wales, 
57. C. oo Wolle. Hab. Llyn-y-cwm-ffynon, Capel 
Curig, N. Wal 
58. C. annunatum (Nig.) De “ad var. ELEGANS Nordst. 
Hab. Moel Siabod, N. Wales 
. oi CosmocLaDIum Haseastiias: De Bary. Hab, Capel Curig, 
60. ectecud paPILLosum West & G. 8. West. Hab. Llyn- 
y-cwm-ffynon, N. Wales. 
61. SraurastRuM anistirervM Ralfs. Hab. Llyn-y-cwm-ffynon, 
N. Wales. 
62. S. tonerspinum (Bail.) Arch. Hab, Llyn-y-cwm-ffynon, 
N. Wales. 
63. S. Suzavicuta West & G.S. West. Hab. Glyder Fawr, 
N. Wales. 
64, 8. aversum Lund. Hab. Lilyn-y-cwm-ffynon, N. Wales. _ 
65. S. Ksettmanno Wille. Hab. Glyder eens N. Wales, 
at 2700 ft. 
