oo 
VEG A-EXPEDITIONENS FETENSKAPLIGA ARBETEN. = 
N. kryophila Cl. — Elliptie oblong or elliptic with parallel 
sides. Strix coarse, costate, about 8 in 0,01 mm., interrupted 
by large areas on both sides of the median line, over which 
areas the faint continuations of the strie are visible. Length 
0,05. Br. 0,018 mm. — P1. 37, fig. 43. — Cape Wankarema. 
N. (kryophila var.?) gelida Ol. — Elliptie. Strie short, 
marginal, 9 in 0,01 mm., costate, separated from very short strize 
on both sides of the median line by large areas, over which 
traces of the strie are visible. Central nodule surrounded by 
a circular area. Length 0,08 mm. Breadth 0,04 mm. — Pl. 37, 
fig. 42. — Cape Wankarema. 
vectio: Pseudo-ampluprora. 
N. "arctica Ol: (Ki Sv. Vet. Ak. Handl. XVII, No 5); pag. 
3) Finm., Kara (Matotschkin). 
Sectio: Complexe. 
N. (Schizonema) Grevillei Ag. (Grun. A. Diat. pag. 42. Nav. 
Libellus Greg. N. rhombica Greg. Libellus Grevillei Cl. D. of 
the A. S. pag. 18) Greenl. (Bessel's Bay), Finm., Spitsb. 
The largest specimen I have seen from Greenland measures 
0,125 mm. in length and 0,024 mm. in breadth and has in 
the middle 13 strize in 0,01 min. 
N. (Schizonema) comoides Grev. (Van Heurck Syn. Pl. XVI, 
fig. 3) Cape Deschnew (East Cape). 
N. complanata Grun. (Amph. complanata Grun. A. Schm. 
Atl. PI: XXVI, fig. 45) Finm., Kara. 
Sectio: Minutule. 
N: crassirostris Grum. (A. Diat. pag. 45, Pl. III, fig. 57) 
Kara. 
var. maasöensis Grun. (1. ce.) Finm. 
N. kryokonites Ol. Elliptic, with obtuse ends. Strie paral- 
lel, 22 in 0,01 mm., absent or obsolete in the middle of the 
valve. Length 0084 mm. Breadth 0,011 mm. — Pl. 37, fig. 44. 
— Cape Wankarema. 
var. subprotracta Cl. Rhombic with produced, subeapitate 
ends, strie& 22 in 0,01 mm. Length 0,033 mm. Breadth 0,007 
mm. — Pl. 32, fig. 46. — Cape Wankarema. 
var. semiperfeeta CM. Strie 24 in 0,01 mm., covering one 
half of the valve, where they are of equal strength, and the 
other half, except in the middle, where they are obsolete. 
— Pl. 37, fig. 45. — Cape Wankarema. 
N. (kryokonites var.?) wankareme Ol. Elongate lanceolate. 
Median line straight, central nodule small, terminal nodules 
near the ends. Strie absent from the middle of the valve, 
