289 



243. M. distans Kiitz. var. nivalis W.Sm., V. H. Syn. lal). LXXXVI, 

 ligs. 25—27. 



Kirkebokanip, Thorshavn (S I r 6 m 6) ; Midvaag (VaagoX 



244. M. crenulata Kiilz., V. H. Syn. lab. LXXXVIII, ligs. .3—5, 



W. Sm. Syn. lab. LUI, fig. 337. 



Not rare. Occiirs abundantly in ifalhcrings from Ilvidcnæs iStromo); 

 Trangisvaa}^ (Syd er 6) and Bord 6. 



245. M. (Paralia) sulcata (Kbr.) Kiilz., W. Sni. Syn. lal). LUI, 

 fig. 338. 



Midvaag (Vaago). 



Var. coronata, A. S. All. lab. CLXXVI, fig. 20. 



Rai^e. Trangisvaag (Sy de ro). 



CYCLOTELLA Kiitz. 1833. V. II. Syn., p. 213. 



246. Cyclotella comta (Ehr.) Kiilz. var. radiosa Grun., V. H. 

 Syn. lab. XCIII, fig. 2. 



Rare. Bosdalafos, Midvaag (Vaago). 



247. C. antiqva W. Sm., V. H. Syn. lab. XCII, fig. 1. 

 Plankton from Sorvaagsvatn (Vaago). 



BIDDULPHIA Greg. 1871. V. H. Syn., p. 203. 



248. Biddulphia aurita (Lyngb.) Bréb., V. H. Syn. tab. XCVIII, 

 ligs. 4—9. 



Rare. Trangisvaag (Sy der 6). 



From Lyaigbye's Herbarium in tlie Bolanical Gardens, 

 Copenhagen, I have had six sheets for examinalion and onlj?^ 

 three of Ihese sheets coillained frcshwater species and nmong these 

 Ihe following forms occurred: — 



Friistulia viih/aris Thw., V. H. Syn. tab. XVII, fig. 6. 

 Cymbella ventricosa Kiitz., V. H. Syn. tab. III, tig. 14. 



— cymbiformis (Ag.) Kiitz., V. H. Syn. tab. II, fig. 11. 

 Naviciila viridis Kiitz. var. slesvicencis Grun., V. H. Syn. tab. VII, lig. 26. 

 Gomphoncma (fciuinatiim Lyngb., \V. Sm. Syn. tab. XXVII, fig. 235. 

 Achnanlhcs iniiiiilissinui Kiitz. var. cvyploccphala Grun., V. II. Syn. tal). 



XXVII, ligs. 41 44. 

 Juiiiotid piwnipla Ehr. var. ciirla Grun., V. II. S\ n. lab. XXXIV, lig. 24. 

 Syiu'dra rimi (Nitzsch.) Ehr., V. H. Syn. lab. XXXVIII, lig. 7. 

 Diatoiua eloiiyaliini Ag., W.Sm. Syn. tab. XL and XLI, lig. 311. 

 , — hicmalc Lyngb.) Ilcib., V. II. Syn. lab. LI, ligs. 1 2. 



Botany of tlic l";iT()es 19 



