VEGA- EXPEDITION ENS VET ENS K A PL I G A A RUE TEN. 479 



Sectlo : Apiculatce. 



N. marginiilafa Grun. a. (jenuma Grun. (A. Dial. pag. 72, 

 PL V, fig. 93) Kara (Matotschkin). 



var. minuta Grun. (1. c.) Cape Deschnew (East Cape) (length 

 0,045 mm. puncta 12 and striae 24 in 0,oi mm.) Greenl. (Musliroom 

 Point). 



N. apicidata (Greg.) Grun. (A. Diat. pag. 73) Greenl., Finm. 



SecHo: Buhice. 



N. duhia W. Sm. (Grun. A. D. pag. 77) Kara, Cape Desch- 

 new (East Cape). 



In the East Cape gathering occurs a small form, only 0,065 

 mm. in length, with 8 puncta and 29 stria3 in 0,oi mm. 



N. Wanharemce CI. N. Sp. — Keel not very eccentric; carinal 

 puncta 5—7 in 0,oi mm. absent in the middle, where there is an 

 indication of a central nodule. Stria) very fine, about 30 in 0,oi 

 mm. Length 0,i5 — 0,1? mm. — PL 38, fig. 71 . — Cape Wankarema. 



Sedio : Bllohatce. 



N. hyhrkJa Grun. (A. Diat. pag. 79) Spitsb., Finm., Kara. 



var. kryohonites CI. — Length 0,i3. Carinal puncta 9 in 0,oi 

 mm. Stride very fine, about 30 in 0,oi mm. Keel not very 

 eccentric. Valve slightly constricted in the middle. — PL 38, 

 — fig. 65. Cape Wankarema. 



var.? xjelhicida Grun. (A. Diat. pag. 80, PL V, fig. 9G) Finm. 



N. Mitclielliana Greenl. (Grun. A. Diat. pag. 80, PL V, fig. 

 97) Finm., Spitsb., Kara. 



Sedio : Pseiido-ampMprora. 



N. Amphiprora Grun. (A. Diat. pag. 8L Amphipr. Nitz- 

 schioides CI. D. of A. S. pag. 20, PL IV, fig. 18) Greenl., 

 Spitsb., Cape Deschnew (East Cape). 



Sedio : Insignes. 



N. insignes var. ardica Grun. (A. D. pag. 84) Greenl., Finm., 

 Spitsb., Kara (Matotschkin). 



var.? marginifera Grun. (A. Diat. pag. 84. PL VI, fig. 105) Finm. 



Sedio : BaciUaria. 



N. sociaUs Greg. (Van Heurck Syn. PL LXI, fig. 8) Greenl., 

 Finm., Kara (Matotschkin). 



var. harlana Grun. (iV. Diat. pag. 85, PL VI, fig. 108) Greenl. 

 (Davis strait), Kara. 



var. haltica Grun. (1. c. fig. 107) Kara, Cape Wankarema. 



N. paradoxa (Gmel) Grun. (Van Heurck Syn. PL LXI, fig. 

 6) Kara. 



Sedio : Vivaces. 



N. (vivax var.?) hyperhorea Grun. (A. D. pag. 86, PL V. fig. 

 104) Kara. 



