278 



154. A. coarctata Bréb., Lgst. Spetsb. tab. I, fig. 16. 



Here and there, but in the gatlierings in wliich they occur, gene- 

 rally occurring in a few examples only. Plankton. 



155. A. brevipes Ag. var. intermedia Kiitz., V.H. Syn. tab. XXVI, 

 figs. 21—22. 



Rare. Midvaag (Vaago). 



EPITHEMIA Bréb. 1838. V.H. Syn., p. 138. 



156. Epithemia tupgida (Ehr.) Kiitz., V. H. Syn. tab. XXXI, 

 figs. 1—2. 



Here and there. 



Var. Westermannii Kiitz., V. H. 1. c, fig. 8. 



Var. granulata Grun., V. H. I. c, figs. 5—6. 



Both the varieties interniingled with the main species. 



157. E. Sorex Kiitz., V. H. Syn. tab. XXXII, figs. 7—8. 



Trangisvaag (Sydero); Nordreoer. In a gathering from the latter 

 locality this species occurs in considerable quantity. Plankton. 



158. E. Apgus Kutz., V.H. Syn. tab. XXXI, figs. 15— 17. 

 Here and there. 



159. E. Zebra (Ehr.) Kiitz., V. H. Syn. tab. XXXI, figs. 9, 11—14. 

 Not rare in manj'^ of the gatherings. 



Var. proboscidea Grun., V. H. 1. c, fig. 10. 

 Trangisvaag (Sydero). 



Var. longicornis M. Per. et. F. Herib., Herib. Diat. d'Auv. tab. 

 III, fig. 13. 



Selletræ (Ostero). 



Var. longissima M. Per. et. F. Herib., Herib. 1. c, fig. 14. 



Nordreoer. 



160. E. sp. Fig. 45 660/^. 



L. 0,06 mm., B. 0,012 mm. Costæ 11—12 in 0,01 mm. 

 Dorsal side of valve irregularly undulated. Costæ 



slightly radiant alternating with a — as far as I can see 

 — double row of exceedingly small puncta. As I have 

 seen one example only, and have not seen this form from 

 the pleura-side I have not felt justified in introducing it 

 as a new species. 



Grothusvatn near Sand (Sando). Fig. 45. 



