265 



41. C. Cesatii Rbh., V. H. Syn. tab. VIII, fig. 35. 

 Rare. Kirkebokamp, Thorshavn (vStromo). 



42. C. angustata W. Sm., Lgst. Spetsb. tab. II, Hg. 10. 



Rare. Orneljæld (.Sydero). Plankton. 



Fig. 32 ("^^"/i) shows a Cymbella angustata W. Sni. which 

 difTers from tlie typical form in having a distinct central area. 

 It was found in a gathering from Kirkebokamp (S trom 6). 



Fig. 32. 



43. C. alpina Grun. var., Ost. Danske Diat. All. tab. II, fig. 18. 

 Rare. Kirkebokamp (Stromo), between Ornefjæld and Trangisvaag 



(Sydero). 



44. C. austpiaca Grun.? var. densestriata Ost., Ost. Danske Diat. 

 Afl. tab. II, fig. 6. 



Kirkebokamp Stromo). 



45. C. amphicephala Naegeli, A. S. Atl. tab. IX, fig. 65. 

 Ornefjæld (Sydero); Midvaag (Vaago). 



46. C. naviculiformis Auersw., V. H. Syn. tab. II, fig. 5. 

 Ornefjæld, Trangisvaag (Sydero); Nol so. 



47. C. cuspidata Kiitz., V. H. Syn. tab. II, fig. 3. 

 Rare. Sand S and 6). 



48. C. turgida Greg., V. H. Syn. tab. III, fig. 12. 

 Kirkebokamp (Stromo). 



49. C. ventricosa Kiitz., V. H. Syn. tab. III, figs. 13, 15 and 18. 

 Rather common. Plankton. 



50. C. hebridica Grun., Cl. Diat. Fini. tab. II, figs. 16—17. 

 Hojvig (Stromo. 



51. C. gracilis Rbh., V. H. Syn. tab. III, fig. 23. 

 Thorshavn (Stromo); Hojefjæld (Bor do). 



52. C. incerta Grun. var. naviculacea Grun., Cl. Gronl. & Argent. 

 tab. VI, fig. 11. 



Here and there. 



53. C. æqvalis W. Sm., V. H. Syn. tab. III, fig. 2. 

 Here and there. 



54. C. sinuata Greg., V. H. Syn. tab. III, fig. 8. 



Rather rare. Kirkebokamp Stromo); Trangisvaag (Sydero). 

 Var. antiqva Grun.?, Ost. Danske Diat. Afl. tab. II, fig. 10. 

 Thorshavn (Stromo). 



