93 
médius Wittr. Cellulæ a latere apicibus rotundatis, zygo- 
sporæ ut in a, sed ut videtur aculeis numerosioribus. Diam. 
zygospor. sine acul. 18—20 ju, cum acul. 80—86 fl, long, 
acul. c. 8 fi. 
Norvegiæ arcticæ in fossa turfosa prope Tromsô 18 l / 6 94 
leg. G. Lagerheim. Determ. 0. Nordstedt. 
1892. Closterium maximum ( Wood j Schmidt e. Syn. 
Cl oster htm acerosum var. maximum Wood Freshwat. Alg. 
North Amer. p. 111, t. 11, f. 5 (exclus. Cl. tenue Bail.) 
Forma major et turgida. Crass. 60—80 fl, crass, apic. 
c. 8 u, long. 450—600 fl. 
Explicalio iconum: 1. Cellula (evacuata) a fronte. 2. 
Apex cellulæ. 
Asiæ minoris in stagno limoso ad Merzifoun prope Si- 
was 18 ^93 leg. J. Manissadjian. Determ. et connu, prof. 
W. Schmidle. 
1396. Penium Digitus (. Ehrenb.) Ealfs ß ventri- 
OSUm Lag er h. nov. var. A forma a differt celjulis medio 
inflatis, apicibus attenuatis (conf. fig.)', zygosporis ut in f. a 
(conf. J. Roy et J. P. Bisset , On Scott. Desm. p. 59.) 
v 
