The Botany of Iceland - 01.12.1916, Qupperneq 50

394 ERNST 0STRUP; MARINE DIATOMS FROM THE COASTS OF ICELAND
Rattray, J. A revision of the genus Actinocyclus Ehr. Journ. Quek. Micr. Club II, 4.
London 1890. (Ratt. Actinoc.)
Schmidt, Adolph. Die in den Grundproben der Nordseefahrt . . . enthaltenen Diato-
maceen. II. Jahresber. d. Komm. z. Unters. d. deut. Meere in Kiel, Berlin 1874.
(A. S. N. S. D.)
Schmidt, Adolph. Atlas der Diatomaceenkunde, Aschersleben 1874 — not yet com-
pleted. (A. S. Atl.)
Smith, William. A Synopsis 'of the British Iliatomaceæ I—II, London 1853—1856.
(W. Sm. Syn.)
van Heurck, Henri. Synopsis des Diatomées de Belgique I—IV, Anvers 1880—85.
(V. H. Syn.)
van Heurck, Henri. Traité des Diatomées. Anvers 1899. (V. H.Trt.)
0strup, E. Marine Diatoméer fra 0stgr0nland. Medd. om Grónl. XVIII, Kjobenh.
1896. (0st. 0stg. mar.)
0strup, E. Kyst-Diatoméer fra Gronland. Medd. om Grl. XV, Kjobenh. 1898. (0st.
Kyst. D)
EXPLANATION OF PLATE
Page
1. Caloneis brevis (Greg.) Cl. var. vexans Grun.................. 350
2. Diploneis contigua (A. S.) CI. var. Eudoxia A. S. . ........... 351
3. Diploneis notata sp. nov. .................................... 352
4. Diploneis? inæqvalis sp. nov................................... 353
5. Navicula glabra sp. nov........’ .............,................ 353
6. Navicula Kryokonites Cl.var. ? islandica var. nov.............. 354
7. Navicula (Libellus) complanata Grun. var.?................... 355
8. Gomphonema kamtschaticum Grun.var. islandicum var. nov......... 356
9. Navicula abrupta Greg. var. densestriata var. nov.............. 359
10. Navicula Lyra Ehr. var. islandica var. nov.............. . 360
11. Cocconeis levis sp. nov.................................... 363
12. Achnanthes islandica sp. nov.................................. 365
13. Nitzschia islandica sp. nov................................... 368
14. Synedra curvata sp. nov.................................. 370
15. Grammatophora oceanica Ehr. var. macilenta W. Sm. forma arcuata 373