VEGA-EXPEDITIONENS VETENSKAPLIGA ARBETEN. 465 
A specimen from Cape Deschnew (East Cape) has 21 strize 
in 0,01 mm. in the middle and 23 near the ends. Lenght 0,035 
mm. Br. 0,005 mm. 
N. latefasciata Grun. (A. Diat. Pl. I, fig. 21) Greenl., Mush- 
room Point, Kara, Cape Deschnew (East Cape). 
Specimens from Cape Deschnew (East Cape) have not so 
strongly interrupted strixe as specimens from Kara. 
N. grönlandica Cl. (K. Sv. Vet. Ak. Handl. 18 No 5, pag. 
7, BEI HsrkSDavisstranv 
Sectio: Palpebrales. 
N. palpebralis Bréb. var. Davis Strait. — Length 0,045 mm. 
Breadth 0,013 mm. Strie 10 in 0,01 mm. costate, scarcely 
punctate. 
var. minor Grun. (A. Diat. pag. 30, PI. I, fig. 23) Finm. 
A variety from Spitsbergen has 16 strizse in 0,01 mm. Length 
0,04 mm. Breadth 0,008 mm. N. minor Greg. 
N. semiplena (Grev.) Donk (Brit. Diat. Pl. IV, fig. 5) Finm., 
Spitsb. (Length 0,065 mm. Breadth 0,001 mm. Strie 10 in 
0,01 mm.) 
Ni solida CI. (AlDiat. pag: 13, Pl I, fig, 24) Finm. 
Sectio: Amplusbene. 
N. brevis Greg. (Diat. of CI. pag. 478, Pl. IX, fig. 4, A. 
Schm. N. Sea Diat. P1. II, fig. 15) Greenl., Davis Strait, Finm., 
Spitsb., Cape Deschnew (East Cape). 
var. vexans Grun. (A. Schm. N. Sea Diat. PI. II, fig. 14) 
Finm., Matotschkin, Kara. 
var. distoma Grun. (A. Diat. pag. 30, Pl. I fig. 25—26) Finm. 
N. amplusbena var. fuscata (Scehum) Grun. (A. Diat. pag. 
SLJPLuNN fo 200Kara 
N. subsalina Donk. (Brit. Diat. PI. IV, fig. 2, N. Fenzlii 
Grun. N. lacustris Grun.) Greenl., Spitsb., Finm. 
Sectio: Radiose. 
N. flanatica Grun. has been indicated in CI. Diat. of the A. 
S. pag. 17 as an arctic species. I have, however, not found 
this species in reexamining my old slides, so there may be a 
mistake in the determination. 
N. Gastrum (Ehb.?) Donk. (Van Heurck Syn. P1. VIII, fig. 
25 and 27) Kara, Cape Deschnew (East Cape) (Fresh-water 
species?). 
var. jemnisejensis Grun. (ÅA. Diat. pag. 31, P1. I, fig. 28) 
Cape Deschnew (East Cape). 
N. digito-radiata Greg. (A. Schm. N. Sea Diat. P1. III, fig. 
4) Greenl., Mushroom Point, Finm., Spitsb., Kara. 
Ba Il. | 30 
