H. stthtilis liAii.. 

 Hail. Nmv Sir-.'. |.. 10. f. 12. 



Porliaii.'^ only a t'onii of (lie iirccodiiii;' .-^pocu'.-;. 



Very rare: StaiiLsuiul r. Stoiio r. 



Distriliiitiuit: l'>cli;iuiii. Scotland. Finmark (('1..I. America. 



Asia. 



H. stelliger Bail. 

 Xew S|.ei-. p. 10. Van Heirck Synops, p. ■2\.i. pi. 84, fiijs. 1—2. 



Fiequent: Moskenstrommeii +, Stamsund r -|-, 8volv;er r, 

 l\at't.sund r. Brcttcsnes— iSkroven r. Gaukvivro r. Stene i'. 



Di.-<tnbitfio)i: Western Eurojie. Viipin Isles. Spitsbei'iicn 

 (uncertain, Cl.). 



I'odoKii'sl lioriuoides OIont.) Kutz. 



KCtz. Uacill. p. 'y>, pi. 29. f. 84. A. Schmidt Nonls. Diat. pi. 3, l'. 40. 



McloMr, h. .Most. F1. Boliv. 18.39. p. 2. 



Rare: ytamsund r, Svolvær r, Kaftsund r. 

 Dislnhut'wn: Coasts of tlio North Sea. Greenland. West 

 coast of Soutli America. Adriatic Sea. 



?. Enpodisceæ. 



Koporia tessellata (Rop.) Guux. 



Cf. above p. 98. 



Undoubtedly derived from the plankton. 



Rare: Stamsund r -(-, Stcne r r. 



Distribution: Western coasts of Europe and Africa. 



AnIi«>ons t^culptus (\V. Sji.) Ralfs. 



Ealfs in Peitch. Inf. p. 84.5, pi. li. f. 3. Enpodiscns s. \V. Sm. Brit. Diat. I, 



p. 25, pi. 4, f. 39. 



Common: Mosken.strømmen +, Svolvær c, Raftsund r, Bret- 

 tesnes— Skroven r, Ostnesfjord r, Gaukværø c, Steue c. 



Specimens occur -which are very similar to A. cælatug Bail. 

 (A. ScHM. Atlas pi. .32. figs. 14—15), but connected with A. 

 seul2}tus by intermediate forms: Gaukværø +, Stenc r. 



Distrihiition: Coasts of the North Sea. Western Europe. 

 Mediterranean. America. A. cwlutiis: Warmer coasts of the 

 Atlantic. Pacific and Indian Oceans. 



EnpodiNont^ argus W. 8m. 



W. Sm. Brit. Dial., p. 24. A. Schmidt Atlas, pi. 92, figs. 7- 

 Van Heurck Svuops. p. 209, pi. 117 



pi. 97, figs. 



^'ery rare: Moskenstronimen, rr, only one broken valve. 

 I Distrihiition: Frequent on the coasts of the North Sea and 



I Western Europe. America. 



Aii1a4>nflÉ!«4>n!ii Ehrb. 



A. Kittonii Arxott. 

 ÅRNOTT in Pritch. Inf. p. 844, pi. 8, f. 24. A. Schmidt Atlas pi. 3(5, figs. .5—7. 



Rare: Moskenstrommen ■\-, Raftsund r, Brettesnes — Skroven r, 

 Gaukværø i'. 



All specimens observed have 4 processus and no, or a very 

 small or inconspicuous, ,,central space'". 



It is very remarkable that this tropical species occurs in 



)ins. jf)C) 



Lofoten. Very likely fossil. \{ pivs.^iit I have no ojiportunity of 

 ascertaining- whether the cells have really all been empty. 



Distribution: Warmer coa.sts of the Pacific Ocean, especially 

 frequent on the coasts of California. 



^l. Johnsouii .Vh.nott. 



Abnott in rRiTCH. Int. p. 844. A. Schmidt Atlas pi. 36. figs. 1, 2. 



.1. Kitlonii rai: J. Uattu. Rev. of Aulacodisc. p. 376. 



Very rare: Raftsund r, Brettesnes— Skroven r. 



Diflers from the preceding especially in having- a conspicuous 

 central .space and processus of a different siiape. .4. Kittouii is. 

 however, said to vary considerably. 



Distribution: Tropical coa.sts of the Indian and Atlantic 

 Oceans. 



4. Astcrohimprcæ. 

 A<*tiiiO|t(> rliiiK Einiii. 



A. nndulatiis (Haii.-V) Kai.fs. 



Cfr. above p. 98. 



Frequent: Mosken.sfronuneii r +. Stamsund r -\-, Svolvær r. 

 Raftsund r, Brettesnes — Skroven r, Gaukværø r, Stene r. 



Distribution: Coasts of Western Europe and the North Sea. 

 Arctic regions. Cape of Good Hope. 



A. .splendens (Ehrb.v) Shadh. 



Shade, in Pritch. Inf. p. 840. Van Hbcrck Synojis. pi. 119, figs. 1—2, 4. 



HaUonyx splendcnn Ehrb. Abli. Berl. Ak. 1844? 



Very rare: Moskenstrommen r, Gaukværo r r. 

 Distribution: Coasts of the North Sea and the Baltic (Greifs- 

 wald). 



ANtoroniiihaliiK heptactis (Bkéb.) Rai.ks. 



Cf. above p. 98. 



Undoubtedly derived from the plankton. 

 Very rare: Moskenstrommen ri'. 

 Distribution: Cf. above p. 98. 



5. Biddulphieæ. 



Biddlllpllia (Jray. V. H. (indmling AmplnMyns Ehrb.. Tncnatiiim Kiirb.. 

 ('a-alanlus Ehrb.). 



B. pulchclla C.RAY. 



Gray Arrang, of Brit. Plants, 1. p. 294. Van Hf.ckck Synops, p. 204, pi. 97, 



figs. 1-3. 



Rare: Stamsund r. Raftsund r, Brettesnes— Skroven r, Stene r. 

 Distribution : Frequent on the western and southern coasts of 

 Europe. America. Africa. 



B. regina W. Sm. 



W. Sm. Brit. Diat. II, p. .50, pl. 46, f. 32.3. 



rar, 



B. regina A. Schm. Atlas pl. 1 IM. f. 18 (from Balearic Isles). 



The 3 median elevated parts of the valve hispid, not smooth 

 as statell by W. Sm. both in his discription and figure. 

 Very rare: Stene, a single valve. 



