PENNATÆ. 



Diraphideæ. 



Caloneis Cl., 1894. 

 Caloneis Clevei (Lgst.) CL, Cl. Syn., I, 51; Lgst., Spb., Tab. I, 

 fig. 10 (Nav. Clevei). 

 Lo c. Vester Elv. 

 Ar et. Distr. E. Greenl., Spb., J. M. 



Caloneis fasciata (Lgst.) Cl., Cl. Syn., I, 50; V. H. Syn., Tab. XII, 

 fig. 34 (Nav. fasciata). 



Lo c. Off Cape Amélie (Algæ), Danmarks Havn (Algæ). 



Arct. Distr. Spb., J. M. 



In a sample from Thermometerfjeld I found a form agreeing with 

 Navicula fonticola Grun (V H. Syn., Tab. XII, fig. 32) which Cleve (1. c.) refers 

 to Caloneis fasciata. 



Caloneis lepidula (Grun.) CI., CI. Syn., I, 50; V. H. Trt., Tab. V, 



fig. 236 (Nav. lepid.). 



Loc. Vester Elv. 



Not before recorded from Arctic regions. 



Caloneis septentrionalis sp. nova. Tab. nost. XIV, fig. 1. 



Long. 70//. Lat. 8//, Str. 14 in 10//, delicatissime punctatis. 



Valva lineari, apicibus rotundatis. Raphe area satis lata hyalina 

 cincta. Striis parallelis, sub apices convergentibus media in valva 

 deficientibus ibiqve fasciam transapicalem angustam relinqventibus. 

 Linea inframarginali ditficulter perspicienda. Nodulis terminalibus 

 figuram sicut flammulæ præbentibus. 



Loc. Hvalrosodde, Vester Elv. 



Possibly this species, in spite of its coarse striation, may be most nearly 

 allied to the group l)elonging to Caloneis fasciala. 



Caloneis Silicula (Ehr.) Cl. var. alpina Cl., Cl. Syn., I, 51; 

 Lgst., Spb., Tab. I, fig. 6 (Nav. limosa). 

 Loc. Hvalrosodde, Vester Elv (2 sampl.). 

 Arct. Distr. E. Greenl., Spb., J. M. 



