MARINE DIATOMS FROM THE COASTS OF ICELAND 351 



Diploneis bomboides A. S. var. media Grun. Gl. & Gr. A D., 41, 

 Tab. Ill, fig. 54. 



Steinaklettar X S.W.) H.Js. 

 Area: Eur., Grl., A. S. 



Diploneis chersonensis (Grun.) Cl. Gl. Syn., I, 91 ; V. H. Trt., Tab. 

 XXVI, fig. 738. (Navicula chers.). 



8 samples (S. 1, S.W. 5, N.W. 1, N. 1). 

 Area: Ubiquist. 



In a sample Broddanes (N.) H. Js.) I have found a form, which 

 agrees well with Navicula apis (see Per. Diat. mar., 121, tab. XIX, fig. 38) 

 which b}' Cleve 1. c. is referred to Dipl. cherson. 



Diploneis coffaeiformis (A. S.) Cl. Cl. Syn., F, 81; A. S. N. S. D., 

 Tab. I, fig. 22. 



Grjotnes (N.), C. H. O. 

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



Diploneis constricta (Grim.) Cl. Cl. Syn., I, 83; Donk. Br. D., Tab. 

 VII, fig. 6. (Navicula Musca). 



IsafjorSur (N. W.), H.Js. 



Area: Eur., As., Am., Grl., A. S. 



Diploneis contigua (A. S.) Cl. var. Eadoxia A. S. Cl. Syn. , 1,83; 

 Per. D. mar., Tab. XVII, fig. 6. (Navicula E.) Tab. nost., fig. 2. 



Vestmannaeyjar (S.), H. Js. 

 Area: Eur., Afr., As., Am., A. S. 



I have given a drawing of this species, as the form found by me 

 is somewhat more contracted in the middle than the figure shown 

 by Peragallo. The other figures quoted by Cleve 1. c. have all approx- 

 imately rectilinear sides. 



Diploneis Crabro (Ehr.) Cl. var. minuta Cl. Cl. Syn., 1,102: Per. 

 D. mar., Tab. XV, fig. 7. 



Vestmannaeyjar (S.), H.Js., Reykjavik (S.W. , H.Js. 

 Area: Eur., Aust. 



Diploneis didyma (Ehr.) Cl. Cl. Syn., 1,90; V. H. Trt., Tab. Ill, 

 fig. 147. 



HofSi (N.), H.Js. 



Area: Ubiquist, Grl., A. S. 



Diploneis elliptica (Ktz.) Cl. var. grandis Grun. Cl. Syn., I, 92; 

 Pant. Ung. Ill, Tab. XI, fig. 182 (Nav. praeclara). 



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

 Area: Eur. 



Diploneis fusca (Greg.) Cl. var. subrectangularis Cl. Cl. Syn., 1,93; 

 A. S. At!., Tab. VII, fig. 4. 



Brokey (S.W.), H.Js., DyrafjorSur (N.W.), C. H. O. 

 Area: Eur., As. 



