| Cell body large (about 20 μm long), triangular in shape | 
|   N. sinuatus ?
 cell 23 x 13 μm
 flag. μm
 Yamato
 Kanagawa, 2003
 |   N. sinuatus
 cell 20 x 12 μm
 flag. 21 μm
 Japan, 1998
 |   N. sinuatus ?
 cell 17 x 11 μm
 flag. 26 μm
 Saitama, 2001
 |   N. sinuatus ?
 cell 15 x 8 μm
 flag. μm
 Matsubushi
 Saitama, 2003
 | 
|   N. ostium ?
 cell 20 μm
 flag. μm
 Omine-numa
 Tsukiyono
 Gunma, 2003
 |   N. ostium ?
 cell 22 x 13 μm
 flag. μm
 Okubo Ryoke
 Akigase park
 Saitama, 2006
 | 
| Cell body small, 6-11 μm long, both sides slightly compressed to become straight | 
|   Notosolenus sp.
 cell 11 x 6 μm
 flag. 17 μm
 Japan, 1999
 |   Notosolenus sp.
 cell 11 x 7 μm
 flag. μm
 Watarase river
 Ashikaga
 Tochigi, 2004
 |   Notosolenus sp.
 cell 14 x 8 μm
 Iruma river
 Sayama
 Saitama, 2004
 |   Notosolenus sp.
 cell 10 x 6 μm
 flag. 16 μm
 Koshigaya
 Saitama, 2001
 | 
|   Notosolenus sp.1
 apocamptus ?
 cell 10 x 6 μm
 flag. 13 μm
 Japan, 1998
 |   Notosolenus sp.
 cell 9 x 6 μm
 flag. 15 μm
 Okubo Ryoke
 Akigase park
 Saitama, 2005
 | 
| Cell body ovoid in shape, 6-11 μm long | 
|   N. apocamptus
 cell 11 x 7.5 μm
 flag. 18 μm
 Oh-asoh
 Kumagaya
 Saitama, 2004
 |   N. apocamptus
 cell 10 x 7 μm
 flag. 16 μm
 Saitama, 1999
 |   N. apocamptus
 cell 9 x 6 μm
 flag. 12 μm
 Japan, 1998
 |   N. apocamptus
 cell 11 x 6 μm
 flag. μm
 Matto
 Ishikawa, 2002
 | 
|   N. apocamptus
 cell 9 x 6.5 μm
 flag. 16 μm
 Ishikawa, 2000
 |   N. apocamptus
 cell 10 x 7 μm
 flag. 16 μm
 Koshigaya
 Saitama, 2001
 |   N. apocamptus
 cell 12 x 8 μm
 flag. 22 μm
 Ushiroya Park
 Toda
 Saitama, 2002
 |   N. apocamptus
 cell 10 x 7 μm
 flag. 17 μm
 Shimo-no-koike
 Shiga highland
 Nagano, 2004
 | 
| Misc. | 
|   Notosolenus sp. ?
 cell 28 x 15 μm
 flag. 31 μm
 Japan, 1998
 |   Notosolenus sp.5
 cell 18 x 15 μm
 flag. 24 μm
 Saitama, 1999
 |   Notosolenus sp.1
 apocamptus ?
 cell 14 x 7 μm
 flag. 14 μm
 Japan, 1998
 |   Notosolenus sp.4
 cell 5.5 x 3.5 μm
 flag. 8.5 μm
 Japan, 1998
 |