KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 8. 21 



Gen. 3. Oocystis NiEG. 

 1. 0. Naegelii A. Br. Alg. unicell. p. 94. 



Forma. Cellula' (bime aut quaterna?) elliptica 1 vel fere eirculari-elliptica > , membrana 

 in utroque fine tuberculo instructa (ut in omnibus speciebus hujus genens plus minus 

 evidenter?). 



Long. cell. 30, 32 I 32, 28 35, 31, 34, 32 I 28, 22, 22, 22 18, 20 — 16 - 

 Lat. » 22, 25 ! 24, 26 i 18, 19, 18, 18 | 14, 13, 14, 12 12 — 10 — 



Arthur Pass (17); Omatangi (240). 



Having, in the same gathering, niet with specimens of different length, breadth, 

 and size, I hesitate in approving of the numerous species described lately. 



Gen. 4. Raphidium Kutz. 



1. R. polyinorphum Fresen. Äbh. d. Senckenb. naturf. Ges. 2, p. 199. 



Forma? et fusiformes et falcata?, a me non accuratius examinata?. 



Arthur Pass (17); Teremakau et Arahura (22); Dunedin (27); Hutt Valley (60); 

 Tokano (209). 



Gen. 5. Gloeocystis N^eg. 



Species non examinatai in stagnis ad Waikato river (236, 237), Omatangi (253), 

 Tauranga (304); et in aqua plus minus calida ad Tokano (213), Rotomahana (317, 318). 



Gen. 6. Pleurococcus Menegh. 

 P. sp. inter lila Ulothricis crassiuscula' e Dunedin (31). 



Cohors 3. Volvocilieae Ehrenb.; Cohn. 



Ord. l. VOLVOCEjE. 

 Gen. 1. Eudorina Ehrenb. 

 1. E. elegans Ehrenb.; Pringsh. Paar. d. Sclrwärnisp. lig. 8. 

 Maungaroa (61); Taupo (162). 



Gen. 2. Pandorina Bohy; Pringsh. 

 1. P. Womui (Mull) Bory; Pringsh. Paar. d. Schwärmsp. fig. 1 — 7. 

 Teremakau et Arahura (22); Dunedin (25); Wellington (67). 



