BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 21. AFD. III. N:0 2. 37 



Var. maxima A. Cl. n. var. — Pl. I, o9. 



Valve 0,0 8 mm. iii length, 0,0 2 4 mm. in breadth, bicon- 

 stricted, broadest in the middle. 



Ks. 15. — Rare. 



This variety comes near to T. tripartita Br. it Pér. in 

 Hér. Anv. VI, 5, but the middle of the valve is relatively 

 broader and the ends are more rounded. 



Disitoiuella Gtrev. 



D. Balfouriana Grev. — W. Sm. B. D. II, LXI, 303. 

 Kk. 48. — Rare. 



Tabellaria Ehb. 



T. flocculosa KiJTZ. — V. H. VII, 10. 



Kv. 9, K), 2S, 32, 34, Nu. 3, 5, 17, 18, 19, 25, 37, 39, 41, 

 S.-K. 7, 22, 33, Ks. 15, 20, Km. 10, 30, Jm. 6, 31, Tr. 38, 

 Na. 35, Tj. 42, Gl. 43, 47, Gl. D. 44, Ke. 49. — Very frequent. 



T. fenestrata Grun. — V. H. LII, 6. 



Kv. 16, 32, 34, Jm. O, 31, Ks. 15, 20, S.-K. 7, 33, Km. 10, 

 Tr. 38, Tj. 42, Gl. 43, 47, Ke. 49. — Frequent. 



III. Cryptoraphideae. 



Stephanodiscus (Ehb.) Grun. 



S. astraea var. minutiila Grun. — V. H. XCV, 7. 



Ke. 49. — One specimen only fonnd. 



Cyclotella Kutz. 



C. Kiitzin^iana Chauv. var. Schumaimi Grun. — V. H. XCIV, 2, 3. 



Jm. 6, Km. 30, Ll. 21, Ke. 49. — Somewhat rare. 



C. comta Ehb. var. radiosa KtJTZ. — V. H. XCIII, 1. 

 Jm. 6, Kv. 32, Ke. 49. — Rather rare. 



