38 
410. 
411, 
412, 
413. 
414, 
415. 
416. 
417. 
418. 
419, 
422, 
TRANSACTIONS AND PROCEEDINGS OF THE [ Szss. LXIX. 
Var. angusta (Kiitz.), V. H. O.—W. of Kirkwall; Hoy. 
S.—Lerwick ; near Scalloway. 
Var. pinnata (W. Sm.), V. H. S.—Near Lerwick. 
S. spiralis, Kitz. O.—Near Kirkwall. 
Genus CAMPYLODIscUS, Ehrenb. 
C. Hibernicus, Ehrenb. S,—Plankton of Loch Asta. 
Clas MYXOPHYCEZ. 
Sub-class GLAUCOCYSTIDE&. 
Family GLAUCOCYSTACE. 
Genus GLAucocystis, Itzigsohn. 
G, Nostochinearwm, Itzigsohn. S.—Near Scalloway. 
Sub-class ARCHIPLASTIDE. 
Order HORMOGONEA,. 
Family STIGONEMACEA, 
Genus HAPALOSIPHON, Nig. 
H., intricatus, West. S.—Neugles Water. 
Genus STIGONEMA, Ag. 
St. ocellatum (Dillw.), Thur. O.—Kirkwall. S.—Near Scalloway. 
St. turfaceum (Eng. Bot.), Cooke. $.—Near Scalloway. 
St. munutwm, Hass. S.—Loch Beosetter, Bressay. 
Family ScyToNEMACE. 
Genus TOLYPOTHRIX, Kiitz. 
T. lanata (Desy.), Wartm. S.—Near Scalloway. 
T. tenwis, Kiitz. O.—Kirkwall. S.—Lerwick. 
Family Nostocace&. 
Genus Nostoc, Vauch. 
N. microscopicum, Carm. O.—Near Kirkwall. S.—Near Scallo- 
way ; Neugles Water. 
Genus ANABHNA, Bory. 
. A, oscillarioides, Bory. O.—In pond near Kirkwall, among 
Rhizocloniwm hieroglyphicum. 
. A. cirevnalis, Rabenh. S.—Plankton of Neugles Water, Lochs Asta, 
Brindister and Clickhimin. 
Family OscILLATORIACE. 
Genus SCHIZOTHRIX, Kiitz. 
S. penicillata (Kiitz.),Gom. Crass. fil. 26-36u ; crass. trich. 4°3- 
4"7u. S.—Near Scalloway. 
