282 



183. S. oxyrynchus Kiitz. var. undulata Grnn., V. H. Syn. tab. 

 XXXIX, fig. 2. 



Hvidenæs (S trom 6). 



184. S. Acus (KiUz.) V. H. Syn. tab. XXXIX, fig. 4. 

 Kirkebokamp (^S trom 6). 



185. S. delicatissima W. Sin. var. mesoleja Grun., V. H. Syn. 

 tab. XXXIX, fig. 6. 



Here and there. Rather comnion in a gatliering from Bosdalafos 

 (Vaago). Plankton. 



186. S. Gaillonii Ehr., V. H. Syn. tab. XXXIX, fig. 18. 

 Rare. Trangisvaag (Sy der 6). 



187. S. austriaca Grun., V. H. Syn. tab. XXXIX, fig. 16a and b. 

 Midvaag (Vaago). 



188. S. faliax Grun., V. H. Syn. tab. XXXIX, fig. 16 c. 

 Kirkebokamp (Stromo). 



189. S. pumpens Kiitz. var. fragilaroides Grun., V. H. Syn. tab. 

 XL, fig. 12. 



Tværaa (Sydero); Nolso; Thorshavn, Kirkebokamp (Stromo). 



These tliree species undoubtedly comes very near to Fragilaria 

 internu'dia Grun., V. H. Syn. tab. XLV, figs. 9-11. (Cfr. V. H. Syn. des- 

 criptions of tab. XXXIX, XL and XLV). 



ASTERIONELLA Hassafi 1855. V. H. Syn., p. 154. 



190. Asterionella formosa Hass., V. H. Syn. tab. LI, figs. 19-20. 

 Planlvton from Sorvaagsvatn (Vaago). 



NITZSCHIA Hassall 1845. Cl. & Grun. arc. Diat., p. 67. 

 Tryblioiiella (W. Sm.) Grun. Cl. & Grun. 1. c, p. 67. 



191. Nitzschia debilis Arn. & Ryl., Lgst. Spetsb. tab. II, fig. 3. 

 Midvaag (Vaago). 



192. N. Tryblionella Hantzsch var. Victoriæ Grun., V. H. Syn. 

 tab. LVII, fig. 14. 



Rare. Hesto. 



193. N. angustata (W. Sm.) Grun. var. hantzschioides m. 

 Fig. 48 660/1. 



L. 0,045 mm., B. 0,007 mm. Striæ 15 in 0,01 mm. 

 Hantzschia-formed, sometimes nearly linear. Striæ de- 

 Hcate, transversely lineate. 



Found disperscd in the material. 



