VEGA-EXPEDITIOKEXS V ET ENS K A PLI G A ARBETEX. 



461 



The fig. previously published by myself is taken from 

 balsam-mounted specimens and not sufficiently exact, for which 

 reason I have drawn a new sketch of the upper and lower 

 valves PL 35, fig. 3 a, lower valve, h, upper valve. 



A. (hungarica Grun. var.?) jamalinensis Grun. (A. Diat. 

 pag. 20, Pi. I, fig. 4) Kara. 



A. (?) tceniata Grun. (Arct. Diat. p. 22, PI. I, fig. 5) Kara. 



var. ? hyperhorea Grun. F. J. L. 



A. (Micatida (Kg.) Grun. (Van Heurck Syn. PL XXVII, fig. 

 3 — 4) GreenL, Bessel's Bay. 



4. Amphoreae. 



Amphora Jcevis Greg. (Grun. Arct. Diat. pag. 24, PL I, fig. 

 8) Kara. 



A. Jcei'issima Greg. (D. of 01. pag. 513, PL XII, fig. 72) 

 Kara, Finm. 



A. ostrearia Breb. (A. Schm. Atl. PL XXVI, fig. 23) Finm. 



var. nova caleclonica Grun.? (A. Schm. Atl. PL XXVI, fig. 

 24) Davis Strait. 



var. vitrea CI. (Ofvers. af K. Sv. V. Ak. Forh. 1868, pag. 

 237, PL IV, fig. 5 — 6) Spitsb. — Length 0,o85 mm. Br. 0,068 mm. 

 Striae, composed of distinct puncta, 9 in 0,oi mm., on the con- 

 nect, membrane 11 in 0,oi mm. 



A. oceUata Donk. var. jamaUnensis CI. & Grun. (A. Diat. 

 pag. 24, PL I, fig. 6) Kara. 



A. Weissflogii A. Schm. (Atl. PL 25, fig. 59) Davis Strait. 

 Length 0,06 mm. Strife costate, 10 in 0,oi mm. 



A. acuta Greg. (D. of Clyde, pag. 524, PL XIV, fig. 93 and 

 93 b.) GreenL, Spitsb., Finm. 



A. liyaUna Kiitz. (A. Schm. Atl. PL XXVI, fig. 52—55) Spitsb. 



A. UneoJata Ehb. Kara (sec. Grun.) Small form with 20 — 

 21 strise in 0,oi mm. 



A. lineata Greg. (A. Schm. Atl. PL XXVI, fig. 59, A. granu- 

 lata Greg.?) GreenL, BesseLs Bay, Spitsb., Finm., Kara. 



A. tenera W. Sm. (Syn. I, pag. 20, PL XXX, fig. 252)? Finm. 



A. coffecpformis Kiitz'. (A. S. Atl. PL XXVI, fig. 56—58) Kara. 



A. lanceolafa CI. (Ofvers. K. Sv. Vet. Ak. Forh. 1867, pag. 

 667, PL XXIII, fig. 2) GreenL, Finm., Spitsb., Kara. 



Valve acute, median line straight, strioe costate, parallel 

 in the exterior, more or less radiant in the interior part of the 

 valve not reaching the median line. Stria) in typical speci- 



