FRESHWATER ALGÆ FROM TUDDAL IN TELEMARK. 147 



I have figured: the urosome, first antenna and fifth pair of 

 legs of Heterocope saltens. (Lilljeb.) G. 0. S. PI. Ill, Figs. 15—18. 



Plankton table. 







1 



iß 







Kovstulvatn 







S > 





:z; 





lÔ 



ei 



M 



4) 



>^ 



>., 



>^ 



1 — 1 



S 



"9 



>— > 



A 



+ 



-h 



+ 



C 



C 



c 



C 



+ 



r 



r 



r 



r 



rr 



r 



rr 



r 



+ 



+ 



+ 



r 



c 



c 



c 



c 



r 



r 



+ 



+ 



c 



+ 



-h 



c 



r 



r 



c 



c 



c 



c 



+ 



+ 



— 



— 



rrr 



— 







rr 



r 



r 







rr 



_ 





+ 



CC 



CC 



+ 



+ 



— 



— 



— 



— 



rr 



rr 



— 



— 



r 



+ 



r 



— 



rr 



— 



— 



— 



— 



rrr 



— 



4- 



-h 



+ 



r 



rr 



— 



— 



— 



.%, c 



Crustaceæ- 

 Holopedium gibherum. Zaddach. 

 Daphnia hyalina. Ley dig. sîibsp. 

 Bosmina ohtusir ostris. G. O S. . 

 Bythoirephes longimanus. Leydig. 

 Heterocope saliens. (Lilljeb.) G. O. S 

 Cyclops scutifer. G. O. S. . . . 

 Nauplieœ 



Rotatoria. 

 Conochilus volvox. Ehrbg. . . 

 Polyarthra platyptera. Ehrbg. 

 Notholca longispina. Kellicott. 

 Anurœa aculeata. Ehrbg. . . 

 — cochlearis. Goss. . . 



Chlorophyceæ. 



Botryococcus Braunii. Ktitz 



Sphœrocystis Schroeteri. Chod. . . . 

 Elakatothrix gelatinosa. Wille. . . . 

 Nephrocytium Agardhianum. Näg. . 

 Crucigenia rectangularis. (iSäg.) Gay. 

 Mougeotia sp 



Peridineæ. 

 Ceratium hirundinella. (0. F. M.) Schrank. 



Flagellatæ. 



Mallomonas acaroides. Perty 



Dinohryon sertularia. Ehrbg 



+ 

 + 



r 



c 

 + 



-h 

 c 

 c 



4- 



