VEG A-EXPEDITIONENS VETENSKAPLIGA ARBETEN. 481 
in the middle. Strie very fine. Length 0,075 mm. Breadth 
0,006 mm. — Pl. 38, fig. 72. — F. J. L., Cape Wankarema. 
N. Ulinearis var. temwuis Grun. (A. D. pag. 93) Kara, Cape 
Wankarema. (Specimen from the latter locality have 11—12 
puncta and 28—530 strize in 0,01 mm. Length 0,13 mm. Breadth 
0,009 mm.). 
N. vitrea Norm. (Van Heurck Syn. Pl. LX VII, fig. 10) Spitsb. 
var. finmarchica Grun. (A. D. pag. 94, Pl. VI, fig. 106) Finm. 
In the Wankarema gathering occurs a variety of N. vitrea 
0,12 mm. in length 0,0o6 mm. in breadth with 8—10 puncta 
in 0,01 mm. and very fine strie. In the Discovery Bay gather- 
ing occurs another variety with 8—9 puncta and 25 strize in 
0,01 mm. : 
N. frigida Grun. (A. Diat. pag. 94, Pl. V, fig. 101) Greenl. 
(Discovery Bay), Kara. 
Sectio: Lamceolate. 
N. lanceolata var. pygmea Cl. — Lanceolate, length 0,045 mm. 
Breadth 0,006 mm. Puncta 12 in 0,01 mm. Strie very fine. — 
Cape Wankarema. 
Seems to connect N. lanceolata with N. acicularis. 2 
N. ovalis Arn. (Grun. A. Diat. pag. 95, Pl. V, fig. 103) Kara. 
Sectio : Niteschella. 
N. Closteriwm (Ehb.) W. Sm. (Van Heurck Syn. Pl. LXX fig. 
5) Finm., Spitsb., Kara. 
N. aeicularis W. Sm. (Van Heurck Syn. 1. c. fig. 6) Kara, 
Cape Wankarema: 
Hanteschia amphioxys (Ehb.) Grun. — Kara (Fresh-water 
species). var. vivar Grun. (A. Diat. pag. 103) Kara. 
H. Weiprechtii Grun. (A. Diat. pag. 104, Nitzschia Weipr. 
Grunt in: Van FHeurck Syn. Pl LX fic: 16) El JIE 
H. virgata Roper var.? borealis Grun. (A. Diat. pag. 104, 
BEVIS: MORA 
var.? kariana Cl. & Grun. (1. ce. fig. 109) Kara. 
H. marina (Donk.) Grun. (Van Heurck Syn. Pl. LVT, fig. 14 
—L15) Greenl. (Davis Strait). 
9. Surirelle. 
Surirella Smithii RBalfs (S. constriceta W. Sm. Syn. I, pag. 
Sr PIA VILL. Sex 50) 
S. fastuosa var. lepida A. Schm. (Atl. Pl. IV, fig. 7) Finm. 
S. Gemma Ehb. (Van Heurck Syn. Pl. LXXIV, fig. 1) Spitsb. 
Bå III. dl 
