KONGL. SV. VKT. AKADKiMIKNS II ANDLINOAH. UANl) 27. N:(i 3. 27 



,50. N. (llrectJl W. Sm (1«o3). -- V. narrow, gradually tapering tiom tlir iriiddh- to 

 the acute ends, about 10 times longer than l)roa(l. Central jjores of tli(! median line a]»])i()xi- 

 mate. Axial area indistinct; central area small. Strije 4 to 11 in 0,01 mm., di.stinctly transversely 

 lineate. 



Var. mhtilis Greg. (1857). — L. 0,o-) to 0,oia; B. 0,008 mm. Strife 10 to 11 in 0,01 mm., 

 finely lineate. — Finn, suhtilh GiiEO. D. of Clyde p. 488 PI. IX f. 19. N. directa var. subt. Cl. 

 Vega p. 467. Finniil. acutiuscula Greg. T. M. S. IV p. 48 PL V f. 21 (1856)? 



Marine: Iceland! Scotland (Greg.), Sea of Kara! Cape Wankarema! 



Var. genuina Cl. — L. 0,o7 to 0,125; B. 0,008 to 0,012 mm. Striu; about .S in 0,(ii mm., 

 finely lineate. — N. directa W. Sm. B. D. I p. 56 PI. XVIU f. 172. A. S. Atl. XLVll f. 4, 5. 

 N. dir. r. mujusia Grun. A. D. p. o9. 



Marine: Spitsbergen! Finmark! Sea of Kara! Cape Deschnetf! North Sea! Yokohama! Arctic 

 America! Greenland! 



Var. rcmofa Grun. (18S()). L. 0,i6 to 0,2; B. 0,015 mm. Striae 4 to 5 in 0,oi mm., coarsely 

 lineate; lineolte 17 to 21 in 0,..i mm. - A. S. N. S. 1). Ill f. 2. Atl. XLVII f. I, 2, 8, 9. Finn, 

 longa Greg. T. M. S. IV p. 47 PI. V f. 18 (1856)? 



Marine: Spitsbergen! Finmark! Sea of Kara! Mediterranean Sea! Hed Sea! Gulf of Mexico 

 (Atl.), Colon! Campeachy Bay (Atl.). 



Var. Incus A. S. (1876). — L. 0, 13 to 0,15; B. 0,01 8 mm. Central area on one side of the 

 central nodixle dilated to a short longitudinal space. Stri;e 4 to 4,5 in 0,01 mm. Lineolai about 

 24 in 0,01 mm. - N. Incus A. S. Atl. XLVll f. 7. 



Marine: Mediterranean Sea (Atl.), Sumbava (Kinker Coll.)! Colon! 



Var. jarunka Cl. — L. 0,15; B. 0,oi mm. Stria* 5 in 0,oi mm. finely lineate. 



Marine: Sumbava (Kinker Coll.)! 



N. directa is a very variable species, of which 1 have seen strictly typical specimens only 

 from the Arctic Sea and the North Sea. Specimens from other localities are suspicious. As to 

 N. longa Greg. I have not seen any form accurately agreeing with the fig. of Gregory, which has 

 radiate strite. Finnul. triophila Castrac. (Challenger Voyage D. p. 26 PI. XV f. 2) is probably a 

 form of N. directa. 



51. N. Kepesii Grun. (1884). — V. linear, narrow. L. 0,o85 to 0,0115; B. O.008 mm. Areas 

 indistinct. Stria' 12 to 18 in O.oi mm. transverse, finely lineate, forming oblique stria;. — Franz 

 Jos. Land D. p. 103 PI. I f. 37. 



Marine: Franz Josefs-Land (Grun.). 



52. N. jejuna A. S. (1876). — V. narrow, linear, with rounded or somewhat cuneate ends. 

 L. 0,1 to 0,12; B. 0,01 mm. Axial area indistinct. Central area small, elongated. StrifE 5 in 

 0,01 mm., parallel, or slightly radiate throughout, distinctly lineate. — Atl. XL VI f. 76. Castr. 

 Challenger Voy. p. 33 PI. XX f. 12, XXVIU f. 11. 



Marine: Java (Atl.), Sumatra (Grove Coll.)! Singapore! Macassar Straits! Japan! 



53. N. trigonocephala Cl. (1883). — V. linear, with cuneate ends. L. 0,o5 to0,o65; B. 0,oi 

 to 0,012 mm. Axial area indistinct. Central area small. Sti'itE 10 to 12 in 0,oi mm., almost 

 parallel, transversely lineate, crossed by several undulating, narrow longitudinal bands. — Vega 

 p. 468 PI. XXXVI f. 29. 



Marine: Cape Wankarema! 



54. N. transitans Cl. (1883). — V. lanceolate, 4 to 6 times longer than broad. L. 0,o65 

 to 0,oy; B. 0,0 16 to 0,02 mm. Axial area indistinct. Central area small, orbicular. Stria 7 to 9 

 in 0,01 mm. parallel, distinctly lineate. — Vega p. 467 PI. XXXVI f. 31. 



Marine: Cape Wankarema! 



