1 92 1. No. 4. 



THE PHVTOPI.ANKTON OF SOME NORWEGIAN LAKES. 



47 



Chroococcus limneticus, 4, 5, 10, _'5- 

 Chydorus sphæricus, 8. 

 Clostcrium Kuetzingii, 7, 14. 



— Libellula, 14. 



— setaceum, 14. 



— - var. elongatum, 14, ag. 

 Coelosphærium Kuetzingianum 2, 7, 10. 

 Cosmarium abbreviatum, 41. 



— — var. planctonium, 5, 16, 29, 41. 



— Blyttii, 16. 



— Botrytis, 1 6. 



— connatum, 16. 



— contractum, 4, 16, 29. 



— — var. eUipsioideiim, 16, 29. 



— controversiim, 16, 30. 



— depressiim, 16. 



— — var. achondrum, 6, 16, 30. 



— impressulum, 16. 



— pachydermum var. Æthiopicuin, 7, 16, 



30. 4i- 



— subcrenatum, 16. 



— subtumidum var. Klebsii, 16. 

 - tctraophtalmum, 16. 



Criicigenia irregularis, 5, 20, 36. 



— rectangiilaris, 20, 36. 

 Cyclops scutifer, 8. 

 Cvclotella comta, 3, 4, 6, 12. 



-- Kuetzingiana, 6, 12. 

 Cymatopleura elliptica, 14. 

 Cymbella Ehrenbergii, 12. 



— parva, 12. 

 Daphnia galeata, 4. 



— lacustris, 8. 



Desmidium aptogonum, 7, 20, 35. 



— Pseudostreptonema, 7, 20, 35, 41. 

 Diaptomus laticeps, 4, 8. 

 Dictyosphæriiim pulchelliim, 20. 

 Dinobrvon cylindricum, 9, 12. 



di\iTgcns, 6, 12, 27. 



scrtiilaria, 3, 12. 



stipitatum, 7, 12. 



siibsp. eustipitatuni, 12. 

 Elakatothrix gclatinosa, 9, 20, 36. 

 Kuastrum crassum, 14. 



— denticulatum, 14. 



— verrucosum, 14. 

 Eunotia lunaris, 4, 6, 12. 

 Fragilaria virescens, 12. 

 Glaucocystis Nostochinearum, 10. 

 Gienodinium uliginosum, lo. 

 Gomphosphaeria lacustris, 10, 26. 



— , — var. compacta, 2, 10, 26. 



Gonatozygon aculcalum, 7, 14, 28. 41. 

 Gonatozygon Kinahani, 8, 14, 28. 



— monotænium, 8, 14. 

 pilosum, 7, 14, 28. 



Gyinnozyga monoliformis, 7, 8, 20. 



var. gracilescens, 20. 

 Heterocope saliens, 4, 8. 

 Holopedium gibberum, 4, 8. 

 Hyalotheca dissiliens, 8, 20, 35. 



— mucosa, 20, 35. 



— neglecta, 6, 20, 35. 

 Kirchneriella obesa, 7, 20, 36. 

 Lithocolla Apsteinii, 3, 22, 37. 

 Lyngbya sp. 10. 

 Mallomonas acaroides, 4, 12. 



— producta, 12, 27. 



— tonsurata, 12, 27. 

 Melosira granulata, 2, 3, 12. 



— varians, 7, 12. 

 Merismopedia glauca, 10. 

 Micrasterias conterla, 14. 



— Hardyi, 4 i . 



— Mahabuleshvvarcnsis. 4 1 . 



— Murray i , 41. 



— papillifera, 14. 



— radiata, 14, 29. 



— Sol, 7, 14, 29. 



— — var. ornata, 14, 29. 



— Thomasiana, 14. 

 .Microc\'stis flos-aquæ, 7, 10. 



— marginata, 10. 



— stagnalis, 10. 

 Microspora tumidula 22. 

 Mougeotia sp., 5, 8, 14, 28, 29. 

 Myxonema subsecundum, 22. 

 Nauplii, 3. 



Navicula placentula, 12. 



— (§ Pinnularia) major, 14. 



— — viridis, 14. 

 Notholca longispina, 3, 4, 8. 

 Ocdogonium sp., 22. 



- paludosum, 22, 37. 

 Oocystis crassa, 4, 20, 36. 



— Naegelii, 8, 20. 



— parva, 20, 37. 



— pusilla, 37. 

 Oscillatoria Agardhii, 10. 



— ter.uis, 7, 10, 26. 



Pcdiastrum Boryanum, 2, 3, 4, 5, 7, 20. 

 — var. perforatum, 20. 



— pertusum, 7, 20. 



— — var. clathratum, 20. 



