VEGA-EXPEDITIONENS VETENSKAPLIGA ARBETEN. 489 
mm.) Centre with some small, scattered puncta. Margin with 
small spines (6 in 0,01 mm.) 
C. (Odontodiscus) gramdosus Grun. (A. D. pag. 113, P1. VII, 
fig. 130) Finm., Kara. 
C. (Odontodiscus) lacustris Grun. (A. D. pag. 114) Matotschkin 
Schar, Kara. 
var. marimus Grun. (in Cl. & Möll. Diat. No 172) Davis Strait. 
var. hyperboreus Grun. (Cl. & Möll. Diat. No 315—18) with 
coarser puncta. — Cape Wankarema. 
C. bathyomphalus C1. N. Sp. — Disc 0,02—0,03 mm. in diame- 
ter, with funnel-shaped centre. Puncta arranged in lines, radia- 
ting from the centre to the margin, where they become smal- 
ler. — PI. 38, fig. 81, — Spitsb., Cape Wankarema. 
Stephanodiscus Hantzschii Grun. var. pusilla (A. D. pag. 115, 
PI. VII, fig. 132, Van Heurck Syn. Pl: XCV, fig. 11) Finmark. 
Thalassiosira Nordenskiöldii Cl. (Van Heurck Syn. PI. 
LXXXIIT, fig. 9) Greenl., Northern Atlantic Ocean, Finnmarken, 
Spitsbergen, Kara, Cape Wankarema. 
Hyalodiscus scoticus (Kg.) Grun. (ÅA. D. pag. 116) Greenl. 
(Bessel's Bay, Mushroom Point) Finm., Spitsb., East Cape. 
Podosira hormoides Mont. (Van Heurck. Syn. Pl. XXXIV) 
Greenl. (Mushroom Point). 
var. adriatica (Kätz.) Grun. — Finm. 
P. maxima (Kätz.) Grun. (Casp. Sea Alg. pag. 33. A. D. 
pag. 118, Hyal. arcticus Cl. & Möll. Diat. No 1. H. stelliger 
D. of A. S. pag. 4) Greenl., Finm., Spitsb., Matotschkin Schar, 
Cape Deschnew (East Cape). 
Skeletonema mirabile Grun. (Cl. & Möll. Diat. No 318) Cape 
Wankarema. 
I häve seen of this species only a sketch, sent by Mr. 
Grunow. It has the appearance of a chain of auxospores of 
some Cheetoceros, but not Having seen a specimen I cannot 
say anything about it. 
Melosira mummuloides (Lyngb.) Kätz. — Greenl., Finm., 
Spitsb., Kara. 
var. hyperborea Grun. (M. aretica Dickie) Van Heurck. Syn. 
Pl. LXXXV, fig. 3—4) Discovery Bay, Novaia Zemlia. 
M. sulecata (Ehb.) Kätz. (Paralia suleata Cl.) Finm., Kara. 
var. siberica Grun. (Van Heurck Syn. PI. XCI, fig. 22) 
12 SR 
var. biseriata Grun. (Van Heurck Syn. 1. c. fig. 23—24) 
IR TA 
