The Botany of Iceland - 01.12.1916, Qupperneq 15

MARINE DIATOMS FROM THE COASTS OF ICELAND
359
Navicula humerosa Bréb. Cl. Syn., II, 43; V. H. Trt., Tab. IV,
flg. 182.
6 samples (S. 1, S.W. 2, N.W. 1. N. 2).
Area: Eur., Afr., As., Am., A. S.
Navicula humerosa Bréb. var. constricta Cl. Cl. Syn., 1. c.; Per.
D. mar., Tab. XXVII, fig. 21.
Hafnarfjörður (S.W.), H. Js.
Area: Eur., As.
Navicula latissima Grun. Cl. Syn., 11,43; V. H. Trt., Tab. XXVII,
fig. 762.
Vestmannaeyjar (S.), H. Js.
Area: Eur., As., A. S.
Navicula pusilla Greg. Cl. Syn., II, 41: V. H. Trt., Tab. IV, fig. 186.
6 samples (S. 1, S. W. 5).
Area: Ubiquist, A. S.
Naviculæ Lyratæ Cleve 1895. Cl. Syn., II, 52.
Navicula abrupta Greg. Cl. Syn., II, 61; V. H. Trt., Tab. IV, fig. 162.
Dyrafjörður (N.W.), C. H. O., Aðalvik (N.W., two samples), Lb.
Area: Eur., Afr., As., A. S.
Navicula abrupta Greg. var. densestriata var. nov. Tab. nost., fig. 9.
Long: 32/i, lat: 11 str. 16 in 10,«.
Valva lineari, apicibus cuneatis. Areis lateralibus angustis, mo-
dice procul ab apicibus terminantibus.
Aðalvik (N.W.), Lb.
In spite of its small size and close striation this peculiar species
shall probably be placed under the form-series of Nav. abrupta, as its
short iateral areas especially seem to indicate its place there.
Navicula forcipata Grev. Cl. Syn.. 11,65; Per. D. mar., Tab. XXI,
fig. 28.
4 samples (S. 1, S.W. 2, N.W. 1).
Area: Eur., Afr., Am., Grl.
Navicula forcipata Grev. var. densestriata A. S. CI. Syn., 11,66;
Per. D. mar. 1. c., figs. 29—30.
Isafjörður (N.W.), H. Js., Aðalvik (N.W.), Lb., Skagafjörður (N.), Grld.
Area: Eur., Afr., As., Am., Grl.
Navicula Hennedyi W. Sm. Cl. Syn., 11,57; V. H.Trt., Tab. IV,
fig. 160.
Vestmannaeyjar (S.), H. Js., Búðir (S.W.), H. Js.
Area: Eur., Afr., As., Am., Grl., A. S.