202 



5. Jørge: 



b. Ardissonia (De Not.) V. H. 



S. crystallina (Ao.) KiJTz. 



KUTZ. Bacill, p. %i). pl. Ifi. f. I. Van Heurck Synops, pl. 42, f. 10. Diatoma c. 



Ag. Consp., p. .52. 



Not unfrequent: .Stamsund r, 8volvær +. Gaukvæi'0 r, 

 Steue r. 



Dishihuiion: Coasts of Western Europe. The Mediterranean. 

 Finmark. 



S. siiperba Kutz. 

 KfTZ. Bacill. p. t)9, pl. 15. f. 13. Van Hecrck Traité d. Diat., p. 316, pl. 30, f. 834. 



Very rare: Østnesfiord r, Stene r. 



Distribution: Coasts of Western Europe. Tlie Mediterranean. 

 Finmark (var. minor Gkun.). 



S. baculus Greg. 

 •Greg. Trans. Micr. Soc. 1867, p. 88, pl. 1, f. 54. Van Heurck Synopsis pl. 42, f. 9. 



Very rare: Svolvær r. 



Disfrihiition : Coasts of Scotland and Ireland. 



c. Toxarium (Bail.) V. H. 



S. undnlata (Bail.) W. Sm. 

 W. Sm. Brit Diat. II, p. 97. Van Heprck Synops, p. 154, pl. 42, f. 2. Tox- 

 arium imdulatum Bail. Notes on new sp. and loe. of Micr. Org. p. 15, figs. 24—25. 



Not unfrequent: Stam.sund r, Svolvær -|-, Østnesfiord y-\-, 

 ■Gaukværø r. 



Distribnfio» : Coasts of Europe and North America. Red Sea. 



S. Hennedyana. Greg. 

 -Greg. Diat. of Clyde p. 532, pl. XIV, f. 108. Van Heurck Synops, pl. 42, f. 3. 



Very rare: Stamsund r. 400 ]). long. 



D'lstrihittion: Coasts of Scotland and Belgium. The Mediter- 

 ranean. 



S. (hrperhorea rar.?) rostellata Grun. 

 Grun. Diat. Franz Jos. Land p. .54, pi. II, figs. 6 a— b. 



A specimen very similar to the tigui'e referred to was found: 

 ■Gaukværø. 38 \>. x 3 |).. Stria^ very fine. 

 Di.strilnitio» : Franz Jo.sef's Land. 



Tlialassiodii-ix nitzschioides Grun. 



Cf. above p. 102. 



Derived from the ]ilankton. 



Very rare: Stamsund r, (jlaukvæi'0 r. 



Distvihiition: Cf. above p. 102. 



Sc4>ptrwiu>iK EnRii. 



S. marina (Greg.) Grdn. 



Grun. in Van Heuuck Synops., pl. 37, f. 2. Meridion marinum Greg. Diat. of 



Clyde p. 497, pl. X, f. 41. 



Not unfrequent: Stamsund r -j-, Raftsund r, Østnesfiord r, 

 Gaukværø r, Stene r. 



Disfrilnition : Coasts of the North Sea. Finmark. Balearic 

 Isles. 



S. katntschatica Grun.? 

 Grun. in Van Heurck Synops, pl. 37, f. 6. 



A species very similar to the figure mentioned occurred in the 

 sample from Stene, r (several specimens). Usually broader than 

 the preceding, somewhat variable in shape, at the broader end 

 sometimes rounded, sometimes only obtuse. Valve distinctly costate 

 with linear pseudoraphe; costæ somewhat radiating, 6— 6V2 on 10 |i. 

 Length 38—40 [x, breadth 7—8 {>.. Also similar to Opephora pad- 

 fica Geun. in V.H. Synops, pl. 44, f. 22. 



Distrihution : Kamtschatka. Opephora pacifica, perhaps the 

 same species, in the North Pacific. 



Rliaplionois Ehrb. 



R. nitida (Greg.) Grun. 

 Cocconeis n. Greg. Diat. of Clyde, p. 492, pi. IX, f. 26. Grun. Alg. Novara p. 99. 



Rare : Stamsund r +• 



Distrihution: Coasts of the North Sea. The Mediterranean. 

 Auckland. 



S. PJagiogrammeæ. 



riajfioiiraiiinia stanrophorttm (Greq.) Heib. 



Heib. Consp. Diat. Dan. p. 55. P. Gregorianum Grev., Van Heurck Synops. 



p. 145, pi. 36, f. 2. DeiiHciila slaurophora Greg. Diat. of Clyde p. 496, 



pi. X, f. 37. 



Frequent: Stamsund r, Svolvær r. Raftsund r, Østnesfiord r, 

 Gaukværø -f, Stene +. 



Distrihution: Coasts of the North Sea and Western Europe. 

 Finmark; Greenland. South America. Cevlon. 



Dinieregi-amina Bales. 



D. minus (Greg.) Bales. 



Bales in Pkitch. Inf. p. 79U. Van Heurck Synops, pl. 36, f. 10, 1 1 a. 



Daitiada m. Greg. Diat. of Clyde p. 496, pi. X, f. 35. 



Somewhat rare: Stamsund r, Svolvær r, Gaukværø r, Stene r -f. 



var. nana (Greg.) V.H. 

 Van Heueck Traité p. 336, pl. 10. f. 393. Dentiada nana Greg. 1. c f, 34. 



Rare : Gaukværø r. Seems to be only a smaller form of the 

 preceding species. 



Distrihution: Coasts of Western Europe. The Mediterranean. 



D. iulTUm (Greg.) Ealfs. 



Bales 1. c, Dentiada fulra Greg. Diat. of Clyde, p. 496, jd. X, f. 38. Van 



Hei^rck Synops, pl. 36, f. 28. 



Somewhat rare: Stamsund +, Gaukværø -f, Stene r. 

 Distribution: Coasts of AVe.stern Ein'oi)e. Sweden. The Me- 

 diterranean. 



4»l,> |>li«Ml«>siiiiN Grev. 



(i. Williamsonii (<!reg.) Grun. 



Cf. above p. 1(»2. 



Rather fretiuent: Moskcnstioniiiicn r. Stamsund + c- Gauk- 

 værø r, Stene r. 



