Microplankton from the Finnisli. Waters during the Month of May 1913. 25 



Laboea conicu Lohm. 



1908 Lohmann, p. 171 (299), pl. 17, f. 18—20. 



1910 Conocylis striata Meunier, p. 148, pl. 11, f. 22, pl. 23, f. L3. 



Occurrence: Station F 23, 30 mètres and station P 30, 40 mètres. 



Laboea delicatissima Leeg. 

 Occurrence: Stations F 50, F 61, F 74 and F 23. 



Laboea vestita Leeg. 

 Occurrence: At ail the stations. 



Lohmanniella oviformis Leeg. 



(Fig. 23.) 



1915 Leegaard, p. 28. 



This species occurred hère and there at stations F 23, F 74, F 61, F 50 and 

 somewhat more numerously at station F 41 in the upper water-layers, where the maximum 

 was 3600 cells pr. litre in the depth of 5 mètres. 



Lohmanniella stellaris n. sp. 



(Fig. 24.) 



This infusoria is a somewhat rîattened globule with the peristome at one of the flat 

 sides. On the margin of the peristome, which lias the form of an hexaster, a small 

 number of short thick cilia could be seen, and outside thèse cilia a 

 broad border of fine cilia or cilia-lamellas was found. The front half 

 of the cell with the peristome and the cilia is more globular than 

 the back half, which bas the form of a truncated cône. The cell 

 bas no covering, it is not tinged with the chloroïodide of zinc. 



The material examined was constantly turned black by the pre- 

 serving-fluid and was rather indistinct. On that account the descrip- 

 tion given above is incomplète, and the species will only be better 

 known after doser study. It was difficult to détermine the real pro- Lo hmannSla oviformis. 

 portions of the cilia as well as the détails of the peristouie. nm . 



The species bas been placed under the genus Lohmanniella 

 on account of the form of the cells and because the covering is missing. Gloser 

 examination will prove, whether this name of genus ought to be kept or not. 



The breadth of the cell-body was 37 — 47 ii. 



N:o :>. 4 



