BIHANG TILL K. SV. VET.-AKAD. IIANDL. BAND 21. AFD. III. N:0 2. 35 



S. minnscula Gr. — V. H. XXXIX, 18. 



Striae l(i to 18 in 0,oi mm., delicate. 



Kv. 9, 32, Nu. 18, Km. 30, Tr. 38. — Not rare. 



S. amphicephala KiJTZ. — V. H. XXXIX, 14. 



Striae 10 to 12 in (),oi mm. 

 Nu. 17, 25. — Rare. 



Var. pusilla A. Cl. S. ampliicepliala var.? .striis teniori- 

 bus V. H. XXXIX, 15. Striae 13 to 14 in 0,oi mm. 

 Km. 10, S.-K. 7, Ke. 49. — Somewhat rare. 



Fragilaria LynoxB. 



F. Tirescens Ralfs. — V. H. XLIV, 1. 

 Nu. 2, Jm. 6. — Rare. 

 Var. prodncta GrRUN. — V. H. XLIV, 8. 

 Nu. 2, 17, 25, Kv. 32, Gl. D. 44. — Somewhat frequent. 



F. imdata W. Sm. — V. H. XLIV, 9. 



Nu. 5, 19, 41, Kv. 2S, S.-K. 22, Na. 35, Gl. D. 45. - 

 Rather frequent. 

 f. stricta. 

 Valve sliorter than the typical form, not constricted in 

 the middle. 



Nu. 19, Na. 35. — Somewhat rare. 



f. tetranodis. 

 Valve elongated, tricon.stricted, 0,o6 mm. in length. 

 Nu. 5, 19, Gl. D. 45. — Rare. 



F. capucina Desm. — V. H. XLV, 4. 



Striae 20 in 0,oi mm. 



Tr. 38, Gl. D. 44. - Rare. 



F. construens Ehb. var. bigibba A. Cl. n. var. — Pl. I, 28. 



Striae 17 in 0,oi mm. Valve strongly bigibbous, O,oii 

 mm. in length. 



Ke. 49. — Rare. 



F. lancettula Schum. — V. H. XLV, 20. 



Valve 0,0 15 mm. in length, 0,ooc mm. in breadth. Striae 

 9 in 0,01 mm. Area narrow, distinct. 

 Tr. 38. — Rare. 



