Micruylduklon /rom /lie Finnish Waters during the Month of May l!>lï. 'i'.i 



The lengtli of the coverings was 94 — 110 u, the breadth of the opening was 35 — 

 4") ;/, the breadth of the lower widened part was 37 — 51 <<. 



Forma minor occurred at ail the stations with the maximum of 680 cells pr. litre 

 (station F 23, 20 mètres), while forma major was fourni at stations V 50, F (il, K 74, 

 F 30 and F 23 with the maximum of 200 cells pr. litre (station F 23, 10 mètres), 

 and forma lineata was scarce at stations F 41, F 50, F 01 and F 23. 



Tinlinnopsis sp. 



A few cells were not determined as they were lying unfavorably in the prépara- 

 tion; but they belonged no doubt to one or other of the species before mentioned. 



Undetermined Ciliata. 



Now and then some small round or oval ciliata, which could not be definitely deter- 

 mined appeared in the material. 



RHIZOPODA. 



Difflugia lobostoma Leid y. 

 1894 a Levander, p. 16," pi. 1, f. 10—13. 



Tins solitary representative of rhizopoda in the material was an amoeba with almost 

 globular covering, which contained small particles of sand. The pseudopod-opening was 

 narrow. 



It occurred very seldom (stations F 23, F 74 and F 50). 



SILICOFLAGELLATA. 



Ebria tripartita (Schum.) Lemm. 



(Fig. 29.) 



1908 Lemmermann, p. 32. 



This species occurred in small quantifies at ail the stations. Fig. 29. Ebria tripartita. 

 The maximum number was 1320 cells pr. litre (station F 50, l^oo. 



5 mètres). 



N:o 5. 



