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parallel, verv fine, about 30 in 0,oi mm. — Pl. 37, fig. 47. —
Cape Wankarema.
N. Bacidus Cl. — Linear, elongate, with rounded ends.
Median line broad. Central nodule small. Striae parallel, 19 in
0,oi mm., absent from the middle of the valve, generally
in-terrupted or as erased towards the middle. Length 0,065 mm.
Breadth 0,oo7 mm. — Pl. 37, fig. 51. — Cape Wankarema.
This species seems to come near K. Fistula A. Schm. N.
Sea Diat. Pl. II, lig. 29, which perhaps may be X.
inconspicua Greg. Diat. of Cl. pag. 478, Pl. IX, fig. 3.
I do not know these two species. In some mediterranean
gatherings I have seen a Navicula closely resembling N.
Baculus, but with finer stria?, 26 in 0,oi mm., obsolete or absent
from the middle of the valve, but not interrupted as in N.
Baculus. Length 0,053, breadth 0,oo< mm. It may perhaps be
N. Fistula.
N. inornata Grun. (A. Diat. pag. 46, Pl. III, fig. 56. N.
Acus Cl. 1. c. pag. 14, Pl. III, fig. 55) Finm.
Sectio: Vanhenrckia.
N. (Schizonerna) vulgaris Thwaites — Kara
(Fresh-water-species?).
Sectio: Vegce.
K. Vegce Cl. (Pleurosigma Kjélhnanii Cl. A. D. pag. 14, Pl.
IV, fig. 80) — Kara, Cape Wankarema.
var. suhconstricta Grun. (in litt. c. icone) linear with
parallel margins, constricted in the middle. Transverse striae 15 1 3.
Longitudinal striae 14 1 3 in 0,oi mm. — Cape Wankarema.
Sectio: Decussat ce.
N. Placentci (Ehb.?) Lewis (Grun. A. Diat. pag. 47, Pl. III,
fig. 60) Finm.
Nav. Incertce sedis.
N. perlepida Grun. F. J. L. (unknown to me).
Stauroneis aspera Ehb. (St. pulchella W. Sm.), var.
intermedia Grun. Greenl. (BessePs Bay, Mushroom Point), Finm.,
Spitsb., Kara (Matotschkin), Cape Deshnew (East Cape).
St. finmarchica Cl. & Grun. (A. Diat. pag. 47, Pl. III, fig.
63) Finm., Kara, Cape Deschnew (East Cape).
St. scandinavica Ldt. (Bih. t. K. Sv. Vet. Ak. Handl. III,
No 15, pag. 47. Navic. lacusfris A. Schm. N. Sea Diat. Pl. 1,
fig. 29) Kara.
St. Spicula Dickie (Van Heurck Syn. Pl. IV, fig. 9) Greenl.
(Discovery Bay), Spitsb., Cape Wankarema.
St. desiderata Cl. (A. Diat. pag. 14, Pl. III, fig. 58) Kara.
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