MARINE DIATOMS FROM THE COASTS OF ICELAND 355 



Navicula Libellus Greg. Cl. Syn., I, 153; Donk. Br. D., Tab. IX, fig. 1. 



OndverSarnes (S.W.), H. Js., Flatey (S. W.), H. Js. 

 Area: Eur., As. 



Navicula rhombica Greg. Cl. Syn., 1,152; Greg. T. M. S. IV, Tab. 

 Y, fig. 1. 



31 samples (S. 5, S.W. 20, N. 3, E. 3). 

 Area: Eur., As., Grl. 



Navicula (Libellus) complanata Grun. var.? cnfr. Cl. Syn., 1, 153. 7. 

 Tab. nost., fig. 7. 



Long: 56 /<, lat: 10 /*. 



Vah 7 a lanceolata, apicibus rotundatis. Raphe area hyalina an- 

 gusta, in medio in areolam rotundatam dilatata, cincta. Striis me- 

 dia in parte valvse segre modo perspiciendis, ibiqve 17 in 10/t, apices 

 versus densioribus. 



BuSir (S.W.), H. Js. 



I consider this Navicula belonging to the form-series of N. complanata, 

 perhaps most closely allied to N. compl. var. hyperborea Grun. (see Gr. 

 Fz. J. L, tab. I, flg. 10) of which, as far as I know, no figure exists viewed 

 from the valve-surface. 



Stauroneis Ehr. 1843. Cl. Syn., I, 144151 (sub. Nav. Microst.). 



Stauroneis constricta (Ehr.?) W. Sm. CL Syn., 1,145; A. S. All., 

 Tab. XXVI, figs. 3539 (St. amphoroides). 



4 samples (S.W. 1, N.W. 1, E. 2). 

 Area: Eur., Am. 



Stauroneis Gregorii Balfs. Cl. Syn., I, 145; V. H. Trt., Tab. I, fig. 52. 



Bii5ir (S.W.), H. Js, Dyrafjor5ur (N.W.), C. H. O. 



Area: Eur., Am. 



Stauroneis salina W. Sm. Cl. Syn., I, 145; V. H. Trt., Tab. I, fig. 54. 



Olafsvik (S.W.), H. Js., Skalanes (E.), H. Js. 

 Area: Eur., Afr., Am., Aust., Grl., A. S. 



Gomphonema Ag. 1824. Cl. Syn., I, 178. 



Gomphonema exiguum Ktz. Cl. Syn., 1,188; Heib. D. D., Tab. V, 



fig. 18. 



91 samples (S. 15, S.W. 40, N.W. 10, N. 16, E. 10). 



Area: Eur, As, Grl. 



Gomphonema kamtschaticum Grun. Cl. Syn., I, 188; V. H. Syn., 

 Tab. XXV, fig. 29. 



28 samples (S. 4, S.W. 9, X.W. 3, N. 5, E. 7). 



Area : Grl, A. S. 



