— ;^G — 



Solitary in a sample from Lem Dan. 



Area: the main species, Europe, America, Java. xm. producta: according,' 

 to de Toni (Syll. p. 786) „afm specie hinc et incle". 



Eunotia Ehr. (1837). V. H. Traite p. 298. 



44. E. major (W. Sm.) Rabh. var. octoiindulata Grun, Grun. Banka, 



tab. 1, fig. 8. 



Lem Dan (two samples). 

 Area: Banca. 



45. E. parallela Ehr. Grun. Banka tab. I, fig. 3 a. 

 Lem Dan. 



forma angiistior V. H. Syn. tab. XXXIV, fig. 16. 



Lem Dan. 



Area: Greenland, Europe, America, Banca. 



40. E. pectinalis (Ktz.) Rabh. var. stricta Rabh. V. H. Syn. tab. 



XXXIII, fig. 18. 



Lem Dan (3 samples). 



var.? minor (Ktz.) Rabh. V. H. I.e. figs. 20 — 21. 



Klong Son, Lem Dan (5 samples). 



. forma furta. V. H. 1. c. fig. 15. 



Lem Dan. 



Area: Europe, America. 



var. uiuliiiata (Ralfs) Rabh. in Grun. Banka, p. 4, tab. I, figs. 5 a— e. 

 Lem Dan (11 sample.s). 



I found forms agreeing with the figures by Grunow quoted above 

 and with W. Sm. Syn. tab. XXXIII, fig. 281 a, but not with V. H. Syn. 

 tab. XXXIII, fig. 17. 



Area: England, Banca. 



47. E. pra;rui)ta Ehr. var. bidens Grun. cnfr. V. H. Syn. tab. XXXIV, 

 fig. 20. 



Lem Ngob. 



Only one small specimen observed (L. 0,04 mm.), in its shape quite 

 agreeing with the quoted fig. by V. H., but I was not able to see any 

 sculpture on its striae. 



Area: Type arctic and alpine. 



48. E. robiista Ralfs var. bigibba Ost. var. nov. tab. nost., fig. 13. 



L. 0,or) mm., strias along the ventral margin 10 in number in 

 0,01 mm., towards the apices closer, finely transversely lineated. 

 Terminal nodi somewhat removed from the apices. 



