K0NGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. NIO 8. 23 



Gen. 2. Ophiocytium NiEG. 



1. O. cochleare (Eichw.) A. Br. Alg. Unic. p. 54; Spirodesmus cochlearis Eichw. 



Nachtr. z. Infus. p. 301, tab. 8, f. 4 sec. auct. 



Blueskinbay (35, 40); Hutt Valley (59); Kohukohu (104); Taupo (162). 



2. O. parvulum (Perty) A. Br. 1. c. p. 55; Brochidium parvulum Perty Kleinst, Leb. 



p. 215, tab. 16, % 6. 



Waimakariri River (5); Teremakau et Arahura (22); Bluff (51; Ohaeawahi (64). 



3. O. majns NiEG. Einz. Alg. p. 89, tab. 4 A., fig. 2. 



Hutt Valley (59). 



Cohor. 6. Coiljllgatfe De Bar. 



Ord. 1. MESOCARPEJ] De Bar. 



Gen. 1. Mougeotia Ag.; Wittr. 



1. M. capucina (Bory) Ag.; Leda capucina Bory in Moug. et Nestl. Stirp. Crypt. 

 Vogeso-rhen. N:o 793 see. auct.; Staurosperinum capucinuin Kutz. 



Omatangi (253, 260), cum sporis maturis vinosis (Cfr. Wittr. et Nordst. Alg. 

 exsicc. N:o 60). 



Ord 2. ZYGNEMEiE Menegii. 

 Gen. 1. Spirogyra Link. 



1. »S. tenuissima (Hass.) Kutz. Spec. Alg. p. 437; Petit Spirog. Par. tab. 1, fig. 2!; 



Zygnema tenuissimura Hass. Obs. on Zygn. p. 41. 



Copulatio lateralis. Crass. cell. veg. 12 ,u; crass. cell. sporif. 34 ii, long. 140 jlc, 

 crass. zygospor. 26 /u, long. 60 ,m. 

 Waimakariri (2). 



2. S. singularis Nordst. in Wittr. et Nordst. Alg. exs. N:o 361. 



»Cellulär apicibus interdum replicatis vegetativa 1 longitudinaliter lineolata? ut in Sp. 

 lineata Suring., juniores fascia ehlorophyllacea spirali anfractibus 3 — 4, diametro (30 — 36 m) 

 4 — 5- rarius 7plo longiores, fertiles diametro suba^cpiales 4plo longiores non tumida?; 

 zygosporas ovales (diam. 25 — 30 u, long. 46 — 64 ,u) membrana fuscescente glabra. 



Dunedin (32 sterilas); Warrington (36); Kororareka (97). > 



This species belongs to the section, that hals the cells not replicated at the enris. 

 (Formely I had seen extremly seldom cells with replicated ends, hut now I think the cells 



