KONGL, SV. VET. AKADEMIENS HANDLINGAR. BAND 27. N:0 3. 45 



somewhat transverse. Striae 12 (middle) to 13 (ends) in 0,oi mm. radiate throughout, coarsely 

 punctate; puncta 14 in 0,oi mm. — Diatomiste II p. 12 PI. I f. 2. 



Slightly brackish water: Amatitlan, Guatemala, fossil! 



Var. rectilineata Cl. (1893). - L. 0,032; B. Ooi4 mm. Strife 16 in 0,oi mm. composed of 

 puncta, 17 in 0,oi mm., arranged in straight, longitudinal rows. — Diatomiste Vol. II p. 12 PI. I f. 1. 



Brackish water: Cameroon, Africa! 



27. N. araphibola Cl. (1891). — V. elliptic-lanceolate, with rostrate, truncate ends. L. 0,037 

 to 0,07; B. 0,02 mm. Axial area narrow, but distinct. Central area rectangular, transversely 

 dilated, broader outwards. Striae 9 to 10 in 0,oi mm. radiate throughout, punctate; puncta 12 to 

 15 in 0,0 1 mm. — N. punctata v. asymmetrica Lagst. Spitsb. D. p. 29 PI. II f. 7 (1873). N. Gastrum 

 V. styriaca Grun. Foss. D. Ost. Ung. p. 144 PI. XXX f. 50 (1882). Franz Jos. Land D. p. 98 PI. I 

 f. 35. N. ampUhola Cl. D. of Finl. p. 33 (1891). N. styriaca Pant. HI PL VI f. 102; PI. XII 

 f. 194; PI. XX f. 298 (1893). 



Fresh water: Franz Josefs-Land (Grrun.) Spitsbergen! Beeren Eiland (Lagerst.), Sweden, 

 Alnarp, Skane! Finland! Hungary, fossil (Grrun.), S:ta Rosa, Calif.! Chicago foss.! 



28. N. Oiilikii Pant. (1889). — V. elliptic-lanceolate, rostrate. L. 0,034; B. 0,oi5 mm. 

 Axial area narrow. Central area transversely dilated. Striae 7,5 to 8 in 0,oi mm., radiate 

 throughout. Puncta 10 in 0,oi mm. — N. (Gastrum var.?) Gdlikii Pant. II p. 46 PI. XI f. 192. 



Brackish water: Hungary, fossil (Pant.). 

 Probably the same as N. amphibola. 



29. N. Grovei Cl. (1893). — V. broadly lanceolate, with obtuse ends. L. 0,o6; B. 0,o3 mm. 

 Axial area narrow. Central area large, transversely dilated, and widened outwards. Terminal 

 fissures in the same direction. Striae 16 in 0,oi mm., radiate throughout. Puncta equidistant, 

 15 in 0,01 mm. Among the median striae a few shorter are intermixed. — Diatomiste II p. 15 

 PI. I f. 14. 



Marine: Oamaru, N. Zealand, fossil! 



This species seems to be akin to N. transfuga var. Neupaueri. 



30. N. baccata Temp. a. Bktjn (1889). — V. broad, with parallel or slightly convex margins 

 and cuneate or rostrate, obtuse or truncate ends. L. 0,05 to 0,055; B. 0,o25 to 0,027 mm. Ter- 

 minal fissures in the same direction. Axial area linear. Central area large, orbicular. Striae 

 5,5 in 0,01 mm., radiate throughout. Puncta 6 in 0,oi mm. forming somewhat curved, longitudinal 

 rows. — D. foss. du Japon p. 42 PI. V f. 10. 



Marine: Japan, fossil! Colon (Deby Coll.)! 



31. N. Schulzii Kain (1889). — V. elliptical with rounded, obtuse ends. L. 0,12; B. 0,o4 

 mm. Axial area distinct, narrowed towards the central and terminal nodules. Central area 

 large, somewhat transverse. Terminal fissures turned in the same direction. Striae 7 in 0, 01 mm., 

 radiate throughout. Puncta 6 in O.oi mm., forming somewhat curved, longitudinal rows. — Bull. 

 Tor. Bot. Cl. March 1889 p. 75 PI. 89 f. 2 (according to Wolle Am. D. PL XXIV f. 5). N. con- 

 foederata Pant. Ill PL XXXIV f. 481 (1893). 



Marine: Atlantic City, N. Jersey, fossil (Deby Coll.)! 



Var. californica Cl. — V. elliptical, with subacute ends. L. 0,o9 6; B. 0,o42 mm. Striae 5, 

 puncta 5 in 0,oi mm. — PL I f. 26. 



Marine: San Pedro, Calif, fossil (Kinker Coll.)! 



Var. marylandica Cl. — V. broadly elliptic-lanceolate, with obtuse ends. L. 0,09; B. 0,o5 

 mm. Striae 6 in 0,oi mm. Puncta 6 to 7 in 0,oi mm., largest at the margins and gradually 

 decreasing in size towards the areas, forming irregular longitudinal rows. 



Marine: Nottingham, Maryland, fossil (Dr. Rae Coll.)! 



