Diatoms from North-East Greenland. 207 



Loc. Marg. of the Pack-ice (2 sampl.). 



A ret. Distr. Davis Strait, E. of Greenl., East Arct. 



Navicula peregrina Ehr., Cl. Syn,, II, 18; V. H. Trt., Tab. III, 

 fig. 101. 



Loc. Otr Cape Amélie (Algæ, 2 sampl.). 

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



Navicula peregrina Ehr., var. kefuingensis Ehr., A. S. Atl., Tab. 

 XLVII, fig. 62. 



Loc. Yderbugten. 



Hitherto recorded only from Firth of Tay and Franzensbad (fossil) 

 (CI. 1. c). 



Navicula peregrina Ehr., var.? oblonga var. nova. Tab. nost XIII, 

 fig. 4. 



Long. 43 fjt. Lat. 10 pt. Str. 11 in 10 /г transverse lineatis. 



Valva lineare-elliptica, apicibus rotundatis. Raphe area augusta 

 hyalina, media in parte valvæ in aream transapicalem curiam 

 dilatata, cincta. Striis radiantibus, sub apices fere parallelis. 



Loc. Marg. of the Pack-ice. 



I am uncertain as to the S3'stematic jîosition of this form. I think it 

 may be related to the group belonging to Navicula peregrina, perhaps it is 

 nearest to Nav. peregr. Meniscus. 



Navicula (Schizonema) ramosissima Ag. , forma genuina, CI. 

 Syn., II, 26; V. H. Trt., Tab. V, fig. 244. 



Loc. Off Cape Amélie (Algae), Danmarks Havn (Algæ, 2 sampl.), Kolde- 

 wey Isl. (Algæ, 2 sampl.). 

 Arct. Distr. Greenl. 



Navicula sibirica Grun., Cl. Syn., II, 29; Cl. Vega Exp., Tab. 

 XXXVII, fig. 38 (Rhoikoneis Bolleana var.? sib.). 

 Loc. Marg. of the Pack-ice (2 sampl.). 

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



Navicula subcuneata sp. nova. Tab. nost XIII, fig. 6. 



Long. 32^. Lat. 10 /i. Str. 10 in 10«, distincte punctatis. 



Valva sublineari, apicibus subcuneatis. Raphe area distincta 

 hyalina cincta. Striis parallelis sub apices leniter radiantibus. No- 

 dulis terminalibus extremis in apicibus situatis. 



Loc. Danmarks Havn (Algæ). 



This form may be akin to an undescribed Navicula in A. S. Atl., Tab. 

 XLVI, fig. 9 (from Quarnero), but it has parallel striæ; the Navicula, delineated 

 by A. Schmidt, has the striæ slightly radiate. 



Navicula superba CI., CI. Syn., II, 29; Cl. Vega Exp., Tab. XXXVI, 

 fig. 23. 



Loc. Danmarks Havn (Algæ), Koldewey Isl. (Algæ), Marg. of the Pack- 

 Ice (3 sampl.). 



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



