FRESH-WATER DIATOMS FROM ICELAND 53 



Var. uncinata Grun. V. H. Trt. 299, Tab. IX, fig. 364. 

 Alftatjörn (E.) B. P. 

 Area : Eur. 



Eunotia bidentula W. Sm. V. H. Trt. 302, Tab. XXX, fig. 828. 

 Mosfellsheiôi (S.W.) C. H. O., Seyöisfjord (E.) B. P. 

 Area: Eur. 



Eunotia diodon Ehr. V. H. Trt. 303, Tab. XXX, figs. 829-830. 

 8 samples (S.W. 3, N.W. 1, N. 1, E. 3). 

 Area: Eur., Af., As., Am., Grl., Spb. 



Var. diminuta Grun. A. Cl. Lul. Lappm. 28. V. H. Syn., Tab. 

 XXXIII, fig. 7. 



West Iceland St., Seyöisfjord (E.) B. P. 



Eunotia elegans Øst. Øst. D. D. 172, Tab. V, fig. 105. 



Staôasta<W (S.W.) H. Js. 



Area: Eur. 



Eunotia exigua Bréb. V. H. Trt. 300, Tab. IX, fig. 369. 

 West Iceland St. 

 Area: Eur., Am. 



Eunotia Faba (Ehr.) Grun. var. densestriata Øst. Øst. D. D. 173, 

 Tab. V, fig. 107. 



Beykjavik (S.W.) C. H. 0., Grimstaöir (N.) B. P., Vallanes E.) H. Js. 

 Hot spring: 1. 



Area: Eur., Grl. 



Eunotia flexuosa Ktz. V. H. Trt. 304, Tab. IX, fig. 387. 

 Ulfsbær (N.) B. P. 

 Area: Eur. 



*Eunotia gracilis (Ehr.) Rbh. V. H. Trt. 300, Tab. IX, fig. 368. 

 48 samples (S.W. 25, N. 7, E. 16). Hot spring: 1. 

 Area: Eur., Afr., Am., Grl., J. M., B. E., Spb., Fz. J. 



Eunotia impressa Ehr. var. angusta Grun. A. CI. Lul. Lappm. 31. 

 V. H. Syn., Tab. XXXV, fig. 1. 



30 samples S.W. 14, N.W. 3, N. 3, E. 10;. Hot springs: 2. 

 Area: Eur. 



Eunotia islandica sp. nov. Tab. nost. V, fig. 75. 

 Long: 68//, lat: 10//, str. 16 in 10//, subti liter punctatis. 

 Valva arcuata, margine dorsali bigibba. Apicibus recurvatis. 

 Seyöisfjord (E.) B. P. 



Not having been able to refer this form to any known species of 

 Eunotia, I have thought it proper describing it as a new species. 



Eunotia lunaris (Ehr.)Grun. V. H. Trt. 303, Tab. IX, fig. 384. 



94 samples (S. 4, S.W. 30, N.W. ;}, N. 9, E. 41, s. 1. 1 . Hot springs: 2. 

 Area: Eur, As., Am. 



