The Botany of Iceland - 01.12.1916, Page 16

360
ERNST 0STRUP
Navicula Hennedyi W. Sm. var. circumsecta Grun. Cl. Syn., II. 58;
A. S. N. S. D., Tab. I, fig. 42. (N. polysticta var. circ.)
Vestmannaeyjar (S.), H. Js.
Area: Eur., Afr., As., Am., A. S.
Navicula Lyra Ehr. var. atlantica A. S. Cl. Syn., II, 63; A. S. N. S. D.,
Tab. I, íig. 34.
Isafjörður (N.W.), H. Js.
Area: Eur.
Navicula Lyra Ehr. var. Ehrenbergi Cl. Cl. Syn., 1. c.; V. H. Syn.,
Tab. X, íig. 1.
Isafjörður (N.W.), H. Js., Dyrafjörður (N. W.) C. H. O.
Area: Ubiquist, Grl., A. S.
Navicula Lyra Ehr. var. islandica var. nov. Tab. nost., fig. 10.
Long: 43^, lat: 21 /r, str. 11 in 10 fi, subtiliter punctatis.
Valva lineare-elliptica apicibus rotundatis. Areis lateralibus an-
gustis, usqve ad apices pertinentibus ibiqve convergentibus.
Aðalvik (N.W.), Lb.
This form does not correspond completely with any of the numerous
previously described variations of Nav. lyra. It ditfers from var. elliptica
bv being more finely striated; from var. atlantica by the lateral areas
almost reaching the apices, and from var. Ehrenbergi by the lateral
areas converging at the apices. Perhaps it is most closely allied to Nav.
lyra var. granulata Per. from »la Manche«, delineated, but not described
in Per. D. mar., tab. XXIII, fig. 5.
Naviculæ Lævistriatæ Cleve 1895. Cl. Syn., 11,66.
Navicula elegans W. Sm. Cl. Syn., 11,68; Per. D. mar., Tab. X,
fig. 25.
4 samples (S. W. 3, E. 1).
Area: Eur., Afr., As., Am.
Navicula palpebralis Bréb. Cl. Syn., 11,70; V. H. Trt., Tab. IV,
fig. 175.
7 samples (S. 4, S.W. 2, N.W. 1).
Area: Eur. Afr., As., Am., A. S.
Navicula palpebralis Bréb. var. angulosa Greg. Cl. Syn., 1. c.;
Per. D. mar., Tab. X, fig. 22.
Hvammsfjörður (S. W.), H. Js.
Area: Eur.
Pinnularia Ehr. 1843. Cl. Syn., 11,71.
Pinnularia qvadratarea A. S. Cl. Syn., II, 95; V. H. Trt., Tab. XXV,
íig. 704 (Navicula qv.).