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Length 0,07 mm. Breadth 0,oi5 mm. — Cape Wankarema.
Perhaps a variety of the following.
A. (Amphitropis?) striolata Grun. (A. Diat. pag. (32, Pl. IV,
fig. 81) Kara.
A. (Amphitropis?) Icariana Grun. (A. Diat. pag. 61, Pl. IV,
fig. 82) Kara.
A. (Amphitropis) decussata Grun. var. septentrionalis Grun.
(A. Diat. pag. 63, Pl. V, fig. 87) Finm., Cape Wankarema.
Specimens from Wankarema are very large, 0,i4—0,is mm. in
length, and have 20—22 striae on the valve. Median Jine sigmoid.
7. Amphipleureae.
Berlceleya Dillwynii Grun. (Van Heurck Syn. Pl. XVI, fig
15) Spitsb., Kara, Cape Deschnew (East Cape) (strias 24 in 0,oi mm)
8. Nitzschieae.
Sectio: Tryblionella.
N. Tryblionella Hantzsch. (Grun. A. Diat. pag. 69) var.
Victoria Grun. — Kara.
var. levidensis W. Sm. — Finm., Kara.
— I have indicated this species in the D. of the A. S. as an
inhabitant of the Arctic Sea, but not having afterwards found
it, I am uncertain as to the’exactness of the determination.
N. (?) seriata Cl. N. Sp. — Fusiförm with gradually
attenua-ted ends. Puncta indistinct. Strise 16—18 in 0,oi mm.
per-vious. Frustules coherent in long bands. Length 0,o9—0,n
mm. Breadth 0,oo8 mm. — Pl. 38, fig. 75. — Greenland,
Tindin-gen (N. O. Holst).
I am very uncertain as to the exact position of this
dia-tom, whose nearest allies seem to be N. ? (Homoeoeladia) pungens
Grun. Mpt. (Cl. & Möll. Diat. No 307) from Japan, also the
Fragilaria (?) Cylindrus Grun. Mpt.
Sectio: Panduriformes.
N. pandiiriformis Greg. var. délicatula Grun. (A. Diat. pag.
71, Pl. V, fig 92) Finm., Spitsb.
N. constricta Kiitz. In the Diat. of the Arctic Sea I
have indicated this species as occurring near Spitsbergen, but
I cannot be sure of the correctness of the determination, not
having found it afterwards.
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