Family: Body truncate anteriorly; two anterior flagella; an oblique furrow near anterior region.
Genus: Elliptical body with a firm pellicle; dorsal side convex, ventral side slightly flat; "cytopharynx" with granules; two lateral chromatophores (chloroplasts) vary in color from green to blue-green, brown or rarely red; 1-3 contractile vacuoles anterior (Kudo, 1966). Cell body elongated ovoid or elliptical; cytopharynx conspicuous; three rows of ejectisome (trichocysts) (Yamagishi, 1999).

->> Description at WPRNO

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C. platyuris 12 samples 34-50 μm 2001-2008	C. ovata 10 samples 14-44 μm 199?-2006	Cryptomonas sp. 42 x 24 μm Omine-numa Minakami Gunma, 2006	Cryptomonas sp. 33 x 17 μm Karakemi marsh Omachi Nagano, 2006
Cryptomonas sp. 48 x 24 μm 51 x 25 μm Iyari marsh 1 Omachi Nagano, 2007
Cryptomonas sp. 26 x 16 μm near Yamaguchi Univ. Yamaguchi, 2004	Cryptomonas sp. 17 x 9 μm Sendabori Chiba, 2002	Cryptomonas sp. 19 x 9 μm Watarase river Ashikaga Tochigi, 2004	Cryptomonas sp. 18 x 9 μm Kurome river Asaka Saitama, 2004
Cryptomonas sp. μm Lake Biwa Maihara Shiga, 2003	Cryptomonas sp. μm Showa-machi G.P. Showa Saitama, 2003	Cryptomonas sp. μm Shishizuka Tsuchiura Ibaraki, 2003
Cryptomonas sp. μm Nishi-Urawa Saitama, 2003	Cryptomonas sp. μm Kiyose river Kiyose Tokyo, 2004	Cryptomonas sp. μm Omoi river Oyama Tochigi, 2004	Cryptomonas sp. μm Ootagaya numa Tsurugashima Saitama, 2003
Cryptomonas sp. μm Tachikawa Tokyo, 2004	Cryptomonas sp. 20 x 10 μm Tanohara marsh Shiga highland Nagano, 2004	Cryptomonas sp. 17 x 8 μm Fukizuka Kawajima Saitama, 2005	Cryptomonas sp. 17 x 8 μm Kakuman-buchi Akagi mountain Gunma, 2005
Cryptomonas sp. 20 x 10 μm Hachiman-numa m. Hachimantai Iwate, 2005	Cryptomonas sp. 23 x 12 μm Kodanuki marsh Fujinomiya Shizuoka, 2005
Posterior curved
Cryptomonas sp. 35 x 18 μm Mihashi Park Saitama, 2002	C. rostratiformis 9 samples 16-24 μm 2001-2004	Cryptomonas sp. ? cell 16-20 μm Nishi-Urawa Saitama, 2003	Cryptomonas sp. ? cell 16 x 7 μm near Yamaguchi Univ. Yamaguchi, 2004
With pyrenoids
C. tetrapyrenoidosa ? 4 samples cell 18-37 μm 2001-2006	Cryptomonas sp. 34 x 18 μm 2 pyrenoids ? Kodanuki marsh Fujinomiya Shizuoka, 2005	Cryptomonas sp. 21 x 10 μm 18 x 9 μm 2 pyrenoids Sendabori Chiba, 2002	Cryptomonas sp. 20 x 8 μm with pyrenoids ? Iwajuku Gunma, 2001
Cryptomonas sp. 20 x 10 μm 2 pyrenoids ? Benten-ike Higashi-Murayama Tokyo, 2004	Cryptomonas sp. 21 x 12 μm with pyrenoids Ageo Maruyama Park Saitama, 2002	Cryptomonas sp. 17 x 8 μm with pyrenoids Akigase Park Saitama, 2002	Cryptomonas sp. 19 x 10 μm with pyrenoids Aina-shinsui p. Kawagoe Saitama, 2005
Cryptomonas sp. 23 x 9 μm with 1 pyrenoid Otto-Numa Tsuchiura Ibaraki, 2002	Cryptomonas ? 23 x 14 μm with pyrenoids Koshigaya Saitama, 2001	Cryptomonas ? 20 x 11 μm with pyrenoids ? Toneri Park Tokyo, 2001	Cryptomonas ? 19 x 9 μm with pyrenoids ? Hirai river Akiruno Tokyo, 2004
Cryptomonas ? 22 x 11 μm with pyrenoids ? Kenmin-kenko f.m. Koshigaya Saitama, 2006
???
C. erosa ? cell 25 μm Japan, 199?	C. erosa ? cell 19 μm Nishi-nasuno Tochigi, 2001	C. erosa ? cell 14 μm Ueno Tokyo, 2001	Cryptomonas ? or Chroomonas ? cell 14 μm Sendabori Chiba, 2002
Cryptomonas ? 10 x 8 μm Uruguay, 1999	Cryptomonas sp. ? 24 x 12 μm Japan, 1998	Cryptomonas sp. ? μm Yamato Kanagawa, 2003	Cryptomonas sp. ? μm Itakura Gunma, 2003
Cryptomonas sp. ? μm Mizuko Fujimi Saitama, 2003	Cryptomonas sp. ? 19 x 9 μm Omotsubo marsh Tetta-cho Okayama, 2004	Cryptomonas sp. ? 22 x 14 μm Okubo Ryoke Akigase park Saitama, 2005	Cryptomonas sp. ? 46 x 30 μm Watarase Wetland Fujioka Tochigi, 2005
Cryptomonas sp. ? 12 x 6 μm Watarase Wetland Fujioka Tochigi, 2005	Cryptomonas sp. ? 23 x 9 μm Kurome river Asaka Saitama, 2005	Cryptomonas sp. ? 21 x 9 μm Oura central p. Oura Gunma, 2006	Cryptomonas sp. ? 22 x 11 μm Tsutsuji-ga-oka p. Tatebayashi Gunma, 2006
Cryptomonas sp. ? 21 x 9 μm Itakura central p. Itakura Gunma, 2006

Similar genus -->> Chroomonas; Chilomonas;

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