Distribution: Coasts of the Xoitli yea and Western Europe. 

 Tlie Moditerranoan. 



G'. (ItStHIIS (V.nEO.) (ilUN. 



Orl-n. in Van Hkihi k Syn(ip<. pi. 'Mi. Il^s. lo~-1(i. Dentiaila d. Oreg. Dial. 

 i.f Civile II. 4H.i, pi. X, f. m. 



Very rare: iStene r; ytamsuiid r. 



Disinhution: Coasts of Western Kurope. Sweden. The Me- 

 ditenaneaii. 



g. Eunotieæ. 



Ennotia Khhii. 

 Frcsli water speeies. 



E. (Iir-its Eh KB. 

 V.\x Hei-rck Syii.ps. p. 141, pi. 34, f, 2. 



Very rare: Steue r. 



Distribidion : Common fresli water species. 



E. major (W. .S.m.I K.\benh. 

 Van Hccrck Synops, p. 14-2. pi. 34, f. 14. 



Very rare: Ostnesfiord r. 



D'lstribidion : Fresh water species from Western Europe. 



E. pectinalis (Dillw.?) Rabenh. 



V.\N Hedrok Synops, p. 142, pi. 33, figs. 15—16. 



Very rar»: Svolvær r, Gaukværø r. 

 Distribution: Common fresh water species. 



E. præriipta Ehrb. 

 Van Hecrok Synops, p. 143. pi. 34, f. U). 



Very rare: Ostnesfiord r, Stene r. 

 Distribution: Northern Europe. America. 



E. hklriitidn W. Sm. 



W. S.M. Brit. Dint. II, p. 83. 



Very rare: Gaukværo r r; Stamsund r r. 

 Distribution: Great Britain and Ireland. 



E. triodon Ehrb. 

 w. Sm. Brit. Diat. I, p. 10, i)l. 2. f. IS. Van Hei-rck Synops, pl. 33. f. 9. 



Very rare: Gaukværø r; Stene r. 



Distribution: Northern Europe. Switzerland. Cayenne. 



Ceratoneis arcits (Ehrb.) Kutz. 

 Van Heurck Tr.iité d. Diat., p. 30.5, f. 69. 



Fresh water species. 

 Very rare: Gaukværø, r. 



Distribution: Common fresli water species, especially in alpine 

 localities. 



lo. Meridioneæ. 



Merldion cb-cnlnre (Grev.) Ag. 

 Van HEtTRCK Synops, p. 161, pl. 51, figs. 10—12. 



Fresh water species. 



Very rare: Svolvæi-. Only two cells of a chain. 



Distribution: Common fresh water species in temperate regions. 



//. Tabellarieæ. 



Tahclliiriu /lorcuhsa (Roth) KOtz. 

 llURCK Synops, p. 162, pi. 52, ligs. 10- 



Fresli water species. 



Rare: Svolvær r, Gaukværø r, Stene r 



Distribution: Common fresh watei 



Sli'iiifflla uniptmctata ([.vN(in.) Ag. 



Cf. above p. 103. 

 Very rare: Gaukværo r. 



Distribution: Frequent on the coasts of Europe. Finmark. 

 The Red Sea. Cape Horn. 



KlialMloiK'iiia Kltz. 

 jR. minututn Kutz. 



p. 126, pi. 



f. II, 4. Van Hel'RCK Synops, p. 166, pi. 54, 

 figs. 17—21. 



Frequent: Stamsund i-, Svolvær c, Raftsund r, Gaukværo r, 

 Stene +. 



Distribution: Frequent on the coasts of Europe, especially 

 on the western and nortliei-n ones. Arctic regions. Cape of (jood 

 Hope. 



R. arcuatum (Lyngb.) Kltz. 



KiJTZ. 1. c. p. 126. pi. 18, f. VI. Van Hburck Synops, p. 166, pi. 54, figs. 14—16. 



Diafoma a. Lyngb. Hydroph. p. 180, pi. 62. 



Frequent: Svolvær + c, Raftsund r, Gaukværo r, ^teue r -f. 

 Distribution: Frequent on the coasts of Europe and North 

 America. Ai'ctic regions. 



R. adriaticum Kutz. 



Kutz. Bacill. p. 126, pi. 18, f. 7. Van Heurck Synops, p. 166, pi. 54, figs. 11 — 



13. Tessella catena Ehrb. Mikrogeol. pi. 22. t'. 65. 



Rare: Svolvær r, Raftsund r r, Stene r r. 



Distribution: Frequent on the coasts of Europe and America. 

 Finmark (r r Cleve who remarks (Vegaexped. p. 484) that tliis 

 species else is wanting in the arctic regions). Africa. Pacific 

 Ocean. 



<>raiiiiiiato|>liora Ehrb. 



G. islandica Ehrb. 

 Van Heurck Synops, pl. 53. f. 7. 



Not unfreqnent: Stamsund r, Svolvær r, Raftsund r, Brettesnes — 

 Skroven r, Stene r +. 



Distribution: Nortliern and western coasts of Europe. North 

 Pacific. Cape Horn. 



G. serpentina Rai.fs. 

 Ralps in Ami. and Mag. XI, pl. IX f. 5. Van Heurck Synops, pl. 53, figs. 1—3. 



Frequent: Moskenstrommen r +, Stamsund r, Svolvær r, Raft- 

 sund r+, Brettesnes— Skroven r, Gaukværø r, Stene r. 



Distribidion: Frequent on the coasts of Europe. Ceylon. 

 Cape Horn. Antarctic regions. 



