154 KAARE MÜNSTER STRØM, 



Genus Äphanocapsa. Nägeli 1849. 



6. Äphanocapsa Grevülei. (Hass.) Rabh. Flor. Europ. Algar. 

 Coccochloris Grevillei. Hass. Biit. Freshw. Algæ. 



Sometimes in quantity, but never very frequent. Size: diam. 

 cell. 4—5 ,«. 



Genus Merismopedia. Meyen 1839. 



7. Merismopedia glauca. (Ehrbg.) Näg. Gatt. einz. Algen. 

 Gonium glaucum. Ehrbg. Infus. 



Frequent. Up to 4100 feet. Size : diam. cell. 3,5—5 fx. 



8. Merismopedia tenussima. Lemmermann in Bot. 

 Centralbl. 76. 



In quantity in a single sample from 4100 feet. Size: diam. 

 cell. 1,8— 1,5 /^ 



Genus Microcystis. Kiitz. 1833. 



9. Microcystis sp. (juv.) 



Juvenile stages of a Microcystis occurred in some samples. 

 Size: diam. cell. 4 u. 



10. Microcystis parasitica. Kütz. Phyc. Germ. 



This species occurred in one or two samples. Size: diam. 

 cell. 2 /.i. 



11. ? Microcystis holsatica. Lemmermann: Kryptogamen- 

 flora. 



Only one specimen, which agreed very well with Lemmer- 

 mann's description. 



Order Horiïiogonese. 



Family Oscillât or i siceæ. 



Genus Oscillatoria. Vaucher 1803. 



12. Oscillatoria sp. 



Very short filaments of an Oscillatoria occurred in a few 

 samples, but never in any quantity. Size: lat. fil. 7,5 — 8,b /,i. 



