Marine Protozoa from Woods Hole - Bulletin of the United States Fish Commission 21:415-468, 1901 by Gary N. Galkins
page 34 of 142 (23%)
page 34 of 142 (23%)
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4. Two parts of shell equal or 5 nearly equal Two parts of shell very unequal 11 5. With transverse flagellum in 6 a distinct furrow Transverse flagellum not in a 10 furrow 6. With horns, or with wing-like 7 processes Without processes of any kind 9 7. Processes small, wing-like, Genus _Diplopsalis_ around flagellum-fissure Processes horn-like 8 8. Anterior part with 7 equatorial Genus *_Peridinium_ and 1 rhombic plates Anterior part with 5 equatorial Genus _Gonyaulax_ and no rhombic plates Anterior part with 3 equatorial Genus *_Ceratium_ and no rhombic plates |
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