VEGA-EXPEDITIONENS VETES 8KAPLJGA AliBETEN. 



4:11 



D. minuta (Donk.) Ralfs (Donkin 1. c f. 8) Finm. 

 JRhoicosigma arcticmn 01. (D. of the A. S. pag. 18, PI. Ill, 



fig. 16) Greenl., Finra., Spitsb., Kara (Matotschkin). 



Specimens from Hackluyts, Spitsbergen, have 21 — 22 striae 

 in 0,01 mm. 



E. EeichJiardii Grun. (M. J. 1877, pag. 181, PI. CXCV, fig. 

 19) Kara, Cape Wankarema. 



R. compacium (Grev.) Grun. (Pleuros. comp. Grev. M. J. 

 V. pag. 12, PI. IV, fig. 9) Kara. 



Amphiprora (Plagiotropis) scaligera Grun. (A. D. pag. 66, 

 PI. V, fig. 90) Finm. 



A. longa CI. (Diat. A. S. pag. 20, PI. Ill, fig. 15) Finm., 

 Spitsb., Kara (Matotschkin). 



A. maxima var. duhia CI. & Grun. (A. Diat. pag. 65, PI. V, 

 fig. 89) Finm. 



A. plicata v. subplicata Grun. (A. Diat. pag. 65, PI. Y, 

 fig. 88) Kara, Cape Wankarema. 



A. (ampMtropis) palvdosa W. Sm. — Greenl. (Discovery Bay) 

 Finm. 



var. Polcornyana Grun. (Verb. 1860, pag. 569, PL IV, fig. 

 9) Kara. 



vao\? hyperdorea Grun. (A. Diat. pag. 62, PI. V, fig. 86) 

 Kara. 



var.? polaris Grun. Mpt. — F. J. L. 



var. punctulaia Grun. (A. Diat. pag. 62, PI. IV, fig. 84) 

 Kara, Cape Wankarema. 



var.? borealis Grun. (1. c. PI. IV, fig, 85) Kara, Cape Wan- 

 karema. 



var.? duplex Donk. (Van Heurck Syn. PI. XXII, fig. 15—16) 

 Greenl. (Discovery Bay), Spitsb. 



A. (AmpMtropis) Kjellmani CI. (A. Diat. pag. 15, PL IV, 

 fig. 83). Kara, Cape Wankarema. 



A. (Amphitropis) Icryopliila CI. — Large, median line strongly 

 sigmoid. Junction-line between the keel and the carina wavj*. 

 Strife on the carina ending in small puncta, 13 — 17 in 0,oi 

 mm. closer than on the valve, 10 — 14 in 0,oi mm. Length 0,i3 

 — 0,16 mm. Breadth of valve 0,oi7 mm. of frustle 0,o48 — 0,o45 

 mm., at the constriction 0,028 — 0,03 mm. — PL 35, fig. 11. — 

 Cape Wankarema. 



A. (Amphitropis?) glacialis CI. — Frustle almost linear, very 

 little constricted in the middle; junction-line between the carina 

 and the valve wavy. Striae on the keel 14 in 0,oi mm. more 

 distant than on the valve, 19 in 0,oi mm. PL 35, fig. 12. 



