Diatoms from North-East Greenland. 239 



Gomphonema Ag., 1824. 



Gomphonema boréale sp. nova. Tab. nost. 11, fig. 5. 



Long. 60 ;^. Lat. 5,5 /J. Str. 8 in 10//, punctatis; punct. 10 — 11 

 in 10;/. 



Valva clavata, apicibus rotundatis. Raphe area hyalina satis 

 lata cincta. Striis subradiantibus, media in valva deficientibus 

 ibiqve fasciam transapicalem latam relinqventibus. Nodulis termi- 

 nalibus inconspicuis. Punctum unilaterale non perspicere potui. 



Lo с. Off Cape Amelie (Algæ). Only a single specimen met with. 



Judging from its appearance as a whole this form may be a freshwater- 

 species, although it occurred in a sample of marine Algæ. 



Naviculæ minusculæ Cl., 1895. 



Navicula Atomus Nægeli var. circularis Øst., Øst., Kossog., 84, 

 Tab. I, fig. 10. 



Lo с. Vester Elv. 



Not before recorded from Arctic regions. Other record, Kossogol. 



Navicula lucidula Grun., CI. Syn., II, 4; V. H. Syn., Tab. XIV, 

 fig. 40. 



Lo с. Hvalrosodde. 



Not before recorded from Arctic regions. Other records, Denmark, 

 Kossogol. 



Anomoeoneis Pfitz., 1871. 



Anomoeoneis exilis (Kiitz.), Grun., CI. Syn., II, 8; V. H. Trt., 

 Tab. IV, fig. 198 (Nav. exil.). 



Lo с. Hvalrosodde. 



А ret. Di st г. W. Greenl., E. Greenl. 



Anomoeoneis Zellensis Grun., Cl. Syn., II, 7; V. H. Syn., Tab. 

 XII, fig. 14 (Nav. Zell.). 



Lo с. Hvalrosodde. 



А ret. Di st г. W. (ireenl., E. Greenl. 



Anomoeoneis Zellensis var. linearis Øst., var. nova. Tab. XIV, 

 fig. 6. 



Long. 22 pi. Lat. 4u. Striis inconspicuis. 



Valva lineari, apicibus leniter attenuatis. Raphe area hyalina 

 angusta media in valva in aream transapicalem parvam rotundatam 

 dilatata, cincta. Structura valvæ sicut scabrosa, an elevationes 

 apicales laterales ostendente? Nodulis terminalibus inconspicuis. 



Loc. Hvalrosodde (2 sampl.). 



This small form recalls in its structure that of Anomoeoii. Zell., but in 

 outline it recalls Navicula difficilis Grun. (V. H. Syn., Tab. XII, fig. 17) a species 

 which perhaps may belong to the genus Anomoeoneis. 



