484 CLEVE, DIATOMS. 
A. S. is somewhat incorrect. The strig& are pervious as in 
Grunow's delineation. 
F. islandica Grun. (Van Heurck Syn. Pl. XLV, fig. 37) 
Jan Mayen. 
var. hyperborea Cl. — Area longer, strige 12 in 0,01 mm. — 
Greenl., Bessel's Bay. 
F.? Cylindrus Grun. Mpt. — Small, linear with parallel sides 
and broadly rounded ends. Strie pervious 14—21 in 0,01 mm. 
Length 0,035—0,06 mm. Breadth 0,002—0,004 mm. — P1. 37, fig. 
64 a. b. c. — Greenl., Tindingen, F. J. L., Cape Wankerema. 
Grammonema striatulum Ag. (Sm. Syn. II, pag. 23, P1. XXXV, 
fig. 298) Greenl., Finm., Spitsb. 
13. Meridionee. 
Asterionella kariana Grun. (A. Diat. pag. 110, Pl. VI, fig. 
121) Kara. 
14. Tabellarie2. 
Grammatophora oceanica (Ehb.) Grun. (G. macilenta W. Sm.) 
Greenl. : 
G. arctica Cl. (öfvers. K. Sv. V. Ak. Förh. 1867, pag. 664, 
PI: XXI, fig. 1. Van Heurck Syn. LI B3 fs: 3) Green. 
(Bessel's Bay, Assistance Bay etc.), Finm., Spitsb., Kara (Ma- 
totsechkin). 
G. arcuata Ehb. (Grun. Verh: 1862, pag. 420, P1. XI, fig. 
7) var. arctica Grun. (Bot. Centr. Bl. 1881, Bd VII, pag. 3) 
Greenl., Spitsb., Kara (Matotschkin), East Cape. 
G. angulosa var. islandica (Ehb.) Grun. (Van Heurck Syn. Pl. 
LIII, fig. 7) Greenl. (Bessel's Bay), Finm., Spitsb., Kara (Ma- 
totschkin). 
Rhabdonema Torellii C1. (D. of the A. Sea pag. 24, Pl. IV, 
fig. 20) Greenl. (Bessel's Bay), Spitsb. 
RB. arcuatum (Lyngb.) (W. Sm. Syn. II, pag. 34, P1. XXXVIII, 
fig. 305) Greenl. (Bessel's Bay), Finm., Spitsb., Kara (Matot- 
schkin), Cape Deschnew (East Cape). 
BR. minutum. (Kg) (Sm. Syn. II, pag. 35, Pl: XXXVII, fig. 
306) Greenl., Finm., Spitsb., Kara (Matotschkin). 
The Eh. adiaticum (Kg.) has been found once in a sample 
from Grötsund in Finmarken, but in no other arctic gathering. 
