32 
290. 
291. 
292. 
293. 
294. 
bo 
we) 
te) | 
302. 
TRANSACTIONS AND PROCEEDINGS OF THE [Szss. LXIX. 
Genus INEFFIGIATA, W. and G. S. West. 
I. neglecta, W. and G. S. West. O.—Kirkwall; Finstown. S.— 
Near Lerwick; Neugles Water. Plankton of Lochs Asta and 
Clickhimin. Bressay, in ditches, and also in the plankton of 
Loch Beosetter. 
Genus SCHIZOCHLAMYS, A. Br. 
S. gelatinosa, A. Br. O.—Kirkwall. S—Neugles Water. 
S. delicatula, West. O.—W. of Kirkwall. 
Genus sPH#ROCYSTIS, Chodat. 
Sph. Schroeteri, Chodat. S.—Plankton of Neugles Water, and of 
Lochs Asta, Sandy and Brindister. 
Genus GL@ocystis, Nag. 
G. gigas (Kiitz), Lagerh. O.—Near Kirkwall. Plankton of Loch 
Kirbister. S—Near Lerwick; near Scalloway ; plankton of 
Lochs Asta and Clickhimin. Bressay, in ditches, and also in 
the plankton of Loch Beosetter. 
. G. vesiculosa, Nag. O.—Kirkwall; Finstown. S.—Near Scallo- 
way ; Neugles Water. 
Clas HETEROKONT ZZ 
Order CONFERVALES. 
Family TRIBONEMACEZ. 
Genus CHLOROBOTRYS, Bohlin. 
. Chi. reqularis (West), Bohlin. O.—Near Kirkwall ; Finstown ; 
Hoy. S.—Near Lerwick; near Scalloway; Neugles Water; 
Bressay. 
Genus opHiocyTium, Nag. 
. O. Arbuscula (A. Br.), Rabenh. O.—Near Kirkwall. &.—Bressay 
. O. graciliceps (A. Br.), Rabenh. S.—Near Lerwick. 
. 0. majus, Nag. O—Kirkwall ; Finstown ; Strommness. 
. 0. bicuspidatum (Borge), Lemm. O.—Near Kirkwall. 
. 0. parvulum (Perty), A. Br. O.—Kirkwall; Finstown. 
Genus TRIBONEMA, Derbes and Solier. 
T. bombycinum (Ag.), Derb. and Sol. [Conferva bombycina, Ag.] 
0.—Near Kirkwall; Hoy. S.—Near Lerwick ; Scalloway. 
Forma minor (Wille), G.S. West. [Conferva bombycina, forma 
minor, Wille.] S.—Lerwick ; Bressay. 
Clas BACILLARIE A 
Order CENTRICZ. 
Family MELOsIRACEZ. 
Genus MELOSIRA, Ag. 
303. M. granulata (Ehrenb.), Ralfs. S.—Near Lerwick. Plankton of 
Neugles Water, Lochs Brindister, Clickhimin and Sandy, and 
also of Loch Beosetter, Bressay. 
