218 



Aniphoi-a Ehkb. 

 Amphora Cl. s. s., Synops. Navic. Diat. II, p. 100. 



Valves with transverse rows of coarse puncta, forming longi- 

 tudinal lines, Ol' strong transverse costæ, crossed by longitudinal 

 ones. Connecting zone simple. 



Greg. Diat. of Cl\ 



A. proteus Geeg. 

 p. 518, pi. XIII. {. HI. A. SCHM, Atlas, pi 



f. 3. 



Very variable. 



Frequent: Stamsund -j-, Svolvær r, Raftsund r, Stene +, 

 Gaukværø + c. 



Distribidion : Coasts of the North Sea. Arctic regions. The 

 Mediterranean. Black Sea. The Atlantic, Indian and Pacific 

 Oceans. 



var. contigua Cl. 



Cl. 1. <•. p. 1(13. A. SCHM. Atlas, pl. 28. f. 4. 



Perhaps a separate species. 



Not unfrequent: Stamsund r, Svolvær r, the Ostnesfiord r. 

 Digtrihution (of var. contigua Cl.): North Sea. The Adriatic. 

 Labuan. New Caledonia. 



A. robusta (i reg. 

 Greg. Diat. .)f Clyde p. .il9, pl. XIII, f. 7(». 



Not uafi-e{|uent : Stamsund r, the Ostnesfiord +. 

 DidvlhiitluH: Coasts of the North Sea. Spitsbergen. The 

 Mediterranean. Macassar Strait. Pacific Ocean. 



A. ovalis KiJTZ. 



KUTZ. Synops., figs. 5—6. Van Heurck Synops, p. 59. pl. I, f. 1. 



Very rare: Stamsund, r. 



Distribution: Fresh or slightly brackish water. 

 Northern and Western Europe. Arctic regions. 



1). Diplainpbora Ci.. 1. c p. 107. 



Frequent in 



Connecting zone complex, with more or less numerous longi- 

 tudinal divisions and transverse striæ or costæ. Valves with trans- 

 verse costæ, or rows of puncta, on the dorsal side with one or two 

 longitudinal lines. 



A. crassa Gueo. 

 Greg. Min-. Jom-n. V, \,. 72, pi. I, f. 35; Diatoms of Clyde j), 524, pi. XIV, 



Atlas 



f. 30. 



Rare: Stamsund r, Svolvæ,r r. Stone r. 

 Distribution: Coasts of the North Sea. Arctic regions 

 Mediterranean. Indian Ocean. China. 



Tile 



Petit Diat. Cap IIl 



SO/.STI^It'/J.Sl.S I'ETIT. 



111. N, f. 15, II. p. A. ScHM. At 



48, f. 



Beautiful form. 



Very rare: Stamsund, r. Ul x 18 \i-; costæ 4'/;; on 10 i)., 

 lineate. Strong longitudinal line. The costæ answer to the fig. 18 

 in A. ScHM. Atlas, the margin of the ventral side to fig. 17 (tliese 

 figures thus correspond to different focussing). 



A. Graeffii Grus. 

 Gkcn. in A. ScHM. Atlas pi. 25, fig. 40. 



Very rare: Stamsund, r. 63 ^< 14 ]).; striæ 17 on 10 |)-, crossed 

 on the dorsal side by a blank line. Ends little protracted. Axial 

 area a little constricted in the middle. 



Not unfi'equent: Stamsund r -f, Stene +> Gaukværø r. 



Distribution: Naples. Indian Ocean. Pacific Ocean. 



A. Grevillcava Greg. 

 Greg. Micr. Journ. V, p. 73, pi. I. f. 3(i. Diat. of Clyde p. 522, pi. 13, f. 89. 

 A. ScHM. Atlas pi. 25. f. 41. .4. fasciata (imo. 1. c. pi. 13, f. 90 (cfr. Cl. 1. c). 



Rare: Stamsund r, Stene r. 



Distribution: Coasts of the North Sea and Western Europe. 

 Spitsbergen. The Mediterranean. Pacific Ocean. Central America. 



A. sulcata Breb. 



Bebb. Diat. Clieib. f. 8. Greg. Diat. of Clyde p. .523. pi. XIll, figs. 92, 92 b. 



Cl. 1. c. p. 112. 



Very rare: Stamsund r, the Ostnesfiord r. 1.5 striæ on 10 n. 

 74 iJ. long. Corresponds exactly to the figures and description 

 in Gregory 1. c. Also tolerably well answering to Cleve's species. 



Disfrihutiun: West coast of Europe. Balearic Islands. 



A. Miilleri A. Schm. 

 A. Schm. Atlas \,\. 26, f. 31. .4. moiiiU/era Greg. 

 pi. XII, f. 69. 



Diat. of Clyde, 



Very rare: Stamsund, r. Valve 73 x 11 |i, with 7V3 striæ 

 on 10 |)., obtuse. The ventral side as illustrated by A. Schm., 

 rather narrow, towards the ends broader, then again narrowing. 

 The raphe is not so distinctly bent as in the figure. On the 

 broader part of the ventral side, inside the marginal striæ, tiiere 

 is a band of short striæ, as in A. proteus, separated from tlic 

 marginal striæ by a blank line. Dorsal striæ, as in the figure 

 mentioned, crossed by a broad blank, longitudinal line. Another 

 sharp line is seen close to the dorsal margin. 



Distribution: West coast of Norwav (Hvidingso). 



A. alata Veuag. 



Peeag. Diat. de Villefr. p. 41. ],\. 11. f. 11. Van Heueck Traité d. Diat. 



pi. 24. f. 677. 



Very rare: Stamsund, r. 



Distribution: West coast of Norway. Morocco. The Medi- 

 terranean. Macassar Straits. America. 



.4. hinodis 



i KEG. Diat, of (^1 



X'cry rare; Stamsund, r. ;34 ;). k)iig. Completely answering 

 to the iilustnition in Gkkc I. c. 



Distribuiiou: Scotland, iiaiearic Islands. 



c. HaUiuiphoru ('i.. 1. c. \t. 117. 



Connecting zone complex. Raphe close to the ventral margin. 

 Transverse, punctate striæ, not crossed by any longitudinal line. 

 Ends of the valve usually I'ostrate or capitate. 



