Diatoms from North-East Greenland. 209 



I quite agree with Dr. H. Heiden when lie says (in the explanation of 

 the Table in A. S. Atl. quoted above) : "Zu Stenoneis darf diese Species, wie 

 Cleve es tut, nicht gestellt werden." 



Navicula glacialis Gl., Gl. Syn., II, 40; Tab. I, fig. 28. 



Lo с. 01Г Cape Amélie (Algæ), Koldewey Isl. (Algæ). 

 A ret. Distr. W. Greenl., E. of Greenl., East Arct. S. 



Navicula glacialis, var. septentrionalis GL, A. S. Atl., Tab. VI, 

 fig. 37. 



Lo c. Koldewey Isl. (Algæ). 



Arct. Distr. Greenl., East Arct. S. 



Navicula punctulata W. Sm., var. finmarchica Grun., GL Syn., 

 II, 47; GL & Grun. A.D., Tab. II, fig. 49 & Øst. Mar. D. Østg., Tab. VI, 

 fig. 69. 



Loc. Off Cape Amelie (Algæ, 4 sampl.), Koldewej^ Isl. (Algæ, 2 sampl.). 



Arct. Distr. Greenl., East Arct. S. 



Naviculæ lyratæ GI., 1895. 



Navicula Lyra Ehr., var. arctica var. nova. Tab. nost XIII, fig. 9. 



Long. 46^. Lat. 21 ju. Str. 9 — 10 in 10 /i, delicatissime transverse 

 lineatis. 



Valva apices versus cuneata, media in parte marginibus fere 

 parallelis. Media parte sulcorum , Lyram effingentium , stria sicut 

 nebulosa instructa. 



Loc. Koldewey Isl. (Algæ). 



I think that this variety comes nearest to Nav. Lyra var. atlantica A. S. 



Navicula pygmæa Kutz, Gl. Syn., II, 65; V. H. Trt., Tab. IV, 164. 



Loc. Koldewey Isl. (Algæ, 2 sampl.), Marg. of the Pack-ice. 



Arct. Distr. East. Arct. S. 



Navicula spectabilis Greg., GL Syn., II, 60; A. S. AtL, Tab. Ill, 

 figs. 20—21. 



Loc. Koldewey Isl. (Algæ). 



Arct. Distr. Greenl. 



Navicula spectabilis Grey., var. densestriata Øst., Øst. Mar. D. 

 Østg., 436; Tab. VI, fig. 67. 



Loc. Off Cape Amelie (Algæ. 2 sampl.), Koldewej^ Isl. (Algæ). 



Arct. Distr. E. Greenl. 



Plnnularia Ehr., 1843. 



Marina' CL, 1895. 

 Pinnularia bistriata Leud. Fortm., Gl. Syn., II, 95; Perag. D. 

 mar. d. Fr., Tab. XI, fig. 14. 



Loc. Off Cape Amelie (Algæ), Koldewey Isl. (Algæ). 



Hitherto recorded only from the Mediterranean, Cej'lon, Labuan, Siam. 



Pinnularia qvadratarea A. Sch., Gl. Syn., II, 95; A. Sch. N. S. D., 

 Tab. Ill, fig. 26. 



XLin. 17 



