484 CLEVE, DIATOMS. 



A. S. is somewhat incorrect. The striae are pervious as in 

 Grunow's delineation. 



F. islandica Grun. (Van Heurck Syn. PI. XLV, fig. 37) 

 Jan May en. 



var. Jiyperborea CI. — Area longer, strise 12 in 0,oi mm. — 

 Greenl., Bessel's Bay. 



F. ? Cylindrus Grun. Mpt. — Small, linear with parallel sides 

 and broadly rounded ends. Strise pervious 14 — 21 in 0,oi mm. 

 Length 0,o35 — 0,o6 mm. Breadth 0,oo2 — 0,oa4 mm. — PI. 37, fig. 

 64 a. b. c. — Greenl., Tindingen, F. J. L., Cape Wankerema. 



Gramrrionema striatulum Ag. (Sm. Syn. II, pag. 23, PI. XXXV, 

 fig. 298) Greenl., Finm., Spitsb. 



13. Meridioneae. 



Asterionella .hariana Grun. (A. Diat. pag. 110, PI. VI, fig. 

 121) Kara. 



14. Tabellarieae. 



Grammatophora oceanica (Ehb.) Grun. (G. macilenta W. Sm.) 

 Greenl. 



G. arctica CI. (Sfvers. K. Sv. V. Ak. FSrh. 1867, pag. 664, 

 PI. XXIII, fig. 1. Van Heurck Syn. LIII B., fig. 3) Greenl. 

 (Bessel's Bay, Assistance Bay etc.), Finm., Spitsb., Kara (Ma- 

 totschkin). 



G. arcuata Ehb. (Grun. Verb. 1862, pag. 420, PI. XI, fig. 

 7) var. arctica Grun. (Bot. Centr. Bl. 1881, Bd VII, pag. 3) 

 Greenl., Spitsb., Kara (Malotschkin), East Cape. 



G. angulosa var. islandica (Ehb.) Grun. (Van Heurck Syn. PI. 

 LIII, fig. 7) Greenl. (Bessel's Bay), Finm., Spitsb., Kara (Ma- 

 totschkin). 



Rhabdonema Torellii CI. (D. of the A. Sea pag. 24, PI. TV, 

 fig. 20) Greenl. (Bessel's Bay), Spitsb. 



B. arcuatum (Lyngb.) (W. Sm. Syn. II, pag. 34, PI. XXXVIII, 

 fig. 305) Greenl. (Bessel's Bay), Finm., Spitsb., Kara (Matot- 

 schkin), Cape Deschnew (East Cape). 



R. minutum (Kg.) (Sm. Syn. II, pag. 35, PI. XXXVIII, fig. 

 306) Greenl., Finm., Spitsb., Kara (Matotschkin). 



The Bh. adiaticum (Kg.) has been found once in a sample 

 from GrOtsund in Finmarken, but in no other arctic gathering. 



