The Botany of Iceland - 01.12.1916, Blaðsíða 11

MARINE DIATOMS FROM THE COASTS OF ICELAND
355
lMavicula Libellus Greg. Cl. Syn., 1,153; Donk. Br. D., Tab. IX, fig. 1.
Öndverðarnes (S.W.), H. Js., Flatey (S. W.), H. Js.
Area: Eur., As.
IMavicula rhombica Greg. Cl. Syn., 1,152; Greg. T. M. S. IV, Tab.
V, íig. 1.
31 samples (S. 5, S.W. 20, N. 3, E. 3).
Area: Eur., As., Grl.
IMavicula (Libellus) complanata Grun. var.? cnfr. Cl. Syn., 1,153. 7.
Tab. nost., fig. 7.
Long: 56 /u,, lat: 10 /.i.
Valva lanceolata, apicibus rotundatis. Raphe area hyalina an-
gusta, in medio in areolam rotundatam dilatata, cincta. Striis me-
dia in parte valvæ ægre modo perspiciendis, ibiqve 17 in 10 /u, apices
versus densioribus.
Búðir (S.W.), H.Js.
I consider this Navicula belonging to tlie foriu-series of N. complanata,
perhaps most closely allied to N. compl. var. hyperborea Grun. (see Gr.
Fz. J. L., tab. I, flg. 10) of which, as far as I know, no flgure exists viewed
from the valve-surface.
Stauroneis Ehr. 1843. Cl. Syn., I, 144—151 (sub. Nav. Microst.).
Stauroneis constricta (Ehr.?) W. Sm. Cl. Syn., 1,145; A. S. Atl.,
Tab. XXVI, figs. 35—39 (St. amphoroides).
4 samples (S.W. 1, N.W. 1, E. 2).
Area: Eur., Am.
Stauroneis Gregorii Ralfs. Cl. Syn., I, 145; V. H. Trt., Tab. I, fig. 52.
Búðir (S.W.), H. Js., Dyrafjörður (N.W.), C. H. 0.
Area: Eur., Am.
Stauroneis salina W. Sm. Cl. Syn., I, 145; V. H. Trt., Tab. I, fig. 54.
Olafsvik (S.W.), H.Js., Skálanes (E.), H. Js.
Area: Eur., Afr., Am., Aust., Grl., A. S.
Gomphonema Ag. 1824. Cl. Syn., I, 178.
Gomphonema exiguum Ktz. Cl. Syn., 1,188; Heib. D. D., Tab. V,
fig. 18.
91 samples (S. 15, S.W. 40, N.W. 10, N. 16, E. 10).
Area: Eur., As., Grl.
Gomphonema kamtschaticum Grun. Cl. Syn., I, 188; V. H. Syn.,
Tab. XXV, íig. 29.
28 samples (S. 4, S.W. 9, N.W. 3, N. 5, E. 7).
Area: Grl., A. S.