Diatoms from North-East Greenland. ■ 217 



Campylodiscus Ehr., 1841. 

 Campylodiscus angularis Greg., V. H. Tit., 378, Tab. XXXV, 

 fig. 909. 



Loc. Off Cape Amélie (Algæ, 3 sampl.). 

 A г ct. Distr. Greenl., East Arct. S. 



Tropidoraphideæ. 



Hantzschia Grün., 1877. 

 Hantzschia Weyprechtii Grün., Fz. Js. Ld., 55, Tab. I, fig. 60. 

 Loc. Koldewey Isl. (Algæ), Pack-ice. 

 Arct. Distr. E. of Greenl., East Arct. S. 



Nitzschia (Hass., 1845), Grün., 1880. 

 Tnjblionella Grün., 1880. 

 Nitzschia Tryblionella Hantsch var. leuidensis W. Sm., V. H. Trt. 

 385, Tab. XV, fig. 494. 



Loc. Off Cape Amélie (Algæ). 



Arct. Distr. E. Greenl. (in freshwater). East Arct. S. 



Apiculatœ Grün., 1880. 



Nitzschia marginulata Grün. var. genuina Grün, forma minutai 

 Cl. & Grün., A. D., 72. Tab. nost. XIII, fig. 20. 



Long. 35//. Lat. 7// & 6^. Punct. carinal. 16 in 10//, striis deli- 

 catis, minime 23 in 10/^. 



Loc. Off Cape Amélie (5 sampl.). 



This form may be the forma minuta (from Esquimault harbour) of Nitz. 

 marg. gen., of which Grunow has not given a figure. 



Bilobatce Grun., 1880. 

 Nitzschia bilobata W. Sm., V. H. Trt. 389, Tab. XV, fig. 512. 

 Loc. Danmarks Havn (Algæ). 

 Arct. Distr. W. Greenl. 



Nitzschia hybrida Grun., CI. & Grun. A.D., 79, V. H. Syn., Tab. 

 LX, figs. 4 — 5. 



Loc. Off Cape Amélie (Algæ). 



Arct. Distr. E. of Greenl., East Arct. S. 



Insignes Grun., 1880. 

 Nitzschia insignis W. Sm., var. arctica Grun., CI. & Grun. A. D., 

 84; 0sL Mar. D. Østg., Tab. VII, fig. 81. 

 Loc. Off Cape Amélie (Algæ). 

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



