VEOA-EXFBDiriONEKS V ETBN SKAPLIG A ARBETEN. 



489 



mm.) Centre with some small, scattered puncta. Margin with 

 small spines (6 in 0,oi mm.). 



G. (Odontodisctts) gramdosus Grun. (A. D. pag. 113, PI. VII, 

 fig. 130) Finm., Kara. 



C. (Odontodiscus) laciistris Grun. (A. D. pag. 114) Matotschkin 

 Schar, Kara. 



var. marinus Grun. (in CI. & Moll. Diat. No 172) Davis Strait. 



var. hyperlorens Grun. (CI. & Moll. Diat. No 315—18) with 

 coarser puncta. — Cape Wankarema. 



G. hathyomphalns CI. N. Sp. — Disc 0,02— 0,o3 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, 

 PL VII, fig. 132, Van Heurck Syn. PI. XCV, fig. 11) Finmark. 



Thalassiosira Nordensldoldii CI. (Van Heurck Syn. PI. 

 LXXXIII, fig. 9) Greenl., Northern Atlantic Ocean, Finmarken, 

 Spitsbergen, Kara, Cape Wankarema. 



Hyalodiscus scoHcus (Kg.) Grun. (A. D. pag. 116) Greenl. 

 (Bessel's Bay, Mushroom Point) Finm., Spitsb.„ East Cape. 



Podosira hormoides Mont. (Van Heurck. Syn. PI. XXXIV) 

 Greenl. (Mushroom Point). 



var. ^adriatica (Kiitz.) Grun. — Finm. 



P. maxima (Kiitz.) Grun. (Casp. Sea Alg. pag. 33. A. D. 

 pag. 118, Hyal. arcticus CI. & Moll. Diat. No 1. H. stelliger 

 D. of A. S. pag. 4) Greenl., Finm., Spitsb., Matotschkin Schar, 

 Cape Deschnew (Easl Cape). 



Skeletonema miraUle Grun. (CI. & M511. Diat. No 318) Cape 

 Wankarema. 



I have seen of this species only a sketch, sent by Mr. 

 Grunow. It has the appearance of a chain of auxospores of 

 some Chsetoceros, but not having seen a specimen I cannot 

 say anything about it. 



Melosira nummuloides (Lyngb.) Ktitz. — Greenl., Finm., 

 Spitsb., Kara. 



var. hyperborea Grun. (M. arctica Dickie) Van Heurck. Syn. 

 PI. LXXXV, fig. 3—4) Discovery Bay, Novaia Zemlia. 



M. sulcata (Ehb.) Kiitz. (Paralia sulcata CI.) Finm., Kara. 



var. siberica Grun. (Van Heurck Syn. PI. XCI, fig. 22) 

 F. J. L. 



var. biseriafa Grun. (Van Heurck Syn. 1. c. fig. 23—24) 

 F. J. L. 



