55 1 



156. R. arcuatum (Ag.) Kl/., V. II. Syn. [ah. LIV., flg. 21. 

 Common, Found in 15 gatherings from Videro; Bordd; Osterd; 



Stromd; Nolsd; Store Di mon: and Sydero. In a l'ew of the ga 

 therings. e. g. from Aaerne Bordd ; Kalbakfjord Stromd ; and Ordevig 

 (Syd erd) abundantly. 



157. Rh. Crozieri Klir.. A. S. AU. tab. CCXX., figs. 5— 6. 



Not rare. Found in 9 gatherings Ironi Bordd; Osterd; Stromd; 

 and Sydero. 



The Rh. Crozieri (Klir. Grun., which I have recorded in niv paper 

 Kyst-Diatomeer fra Grenland (p. 340), and referred to Rab. Diat. Hond., 

 tab. III., fig. 19, is an error; it ought to have been : R. Crozieri Halls: 

 Rabenhorst's figure belongs to the latter. Moreover, the strongly bulg- 

 ing form of R. arcuatum which I mention in the same place p. 3 1 1 

 ought to have been referred to Rh. Crozieri Klir. A. S.. AU. 1. e. . 



158. R. minutum Kt/.., V. H. Syn. tab. KIV., figs. 17— 21. 

 Common. Found in 42 gatherings from Bordd; Osterd; Stromd: 



Nolsd; and Sydero. In a lew of the gatherings, e. g. from Klaksvig 

 Bordd); Gjdv Osterd); and Kvivig Stromd), abundantly. 



STRIATELLA Ag. KS.T2, V. II. Syn., p. Kil. 



159. Striatella delicatula (Ktz.) Grun., V. H. Syn. tab. KIV., 



figs. 1 — 6. 



Not rare. Found in 9 gatherings from Vaagd; S tro nid; and 

 Sydero. In two gatherings from Vaags Kjde (Sydero), abundantly. 



160. S. unipunctata Ag., V. H. Syn. tab. KIV., lig. 0. 



Not rare. Kvannesund (Videro . Vaags Kjde. Tværaa and Trangis- 

 vaag (Sydero). Found in large quantities in the gathering from Kvan- 

 n e s u d d. 



TETRACYCKUS (Ralfs) Grun., V. H. Syn., p. 166. 



*161. Tetracyclus lacustris (A. Braun) Grun., V. H. Tr. d. Diat., 

 p. 358, fig. 108. 



Found singly in a gathering from Kalkakfjord (Stromd). 



RHIZOSOKENIA Ehr. 1843, V. H. Syn., p. Hil 



162. Rhizosolenia setigera Brigth., V. H. Syn. tab. LXXVIIL, 



figs. 6—8. 



Thorshavn (Stromd); Sdrvaag (Vaagd). 



Only a few examples occurred in each of the two gatherings. 



CIKETOCEROS Ehr. 1844, V. II. Syn., p. 195. 



1611 Chætoceros boreale Bail., Cl. Diat. f. arct. S. tab. II., fig. 7 a. 



Betwecn Thorsvig and Kvalvig, Kirkebd (Stromd ; Tværaa Sydero). 



