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From the Bay of Villefranche in December 2013, lugol's-fixed specimen, Z-stack of images made using a 60x objective and DIC optics.
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Drawing from Claparde & Lachmann 1858 (Plate 8, figure 5) of the species now known as Steenstrupiella steenstrupii as "Tintinnus steenstrupii". The scale bar reflects the text description (pg 200) as about 0.2 mm in overall length. The species (and now genus) was presumably named after the Danish biologist Japetus Steenstrup (1813-1897).
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Cryptosporidium parvum
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First depiction of the dinoflagellate now know as Ceratium fusus by Christian Ehrenberg in 1834 as Peridinium fusus.
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From the Bay of Villefranche in December 2013
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Specimen lugol's-fixed from the Ionian Sea.
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Plasmodium vivax
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Plasmodium vivax
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Plasmodium vivax
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Histioneis elongata from the South Pacific, Tara Oceans Expedition station 111. Lugol's-fixed specimen, z-stack of images made using a 40x objective & DIC optics.
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Ceratium furca from the Bay of Villefranche. Living cell, note that the trailing flagella was rotating.
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First depiction of Ceratium furca was by Christian Ehrenberg in 1834 as Perdinium furca. Note the drawing of a rotating flagella.
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From the original species description: Figure 4 from plate 23 of Stein, F.R. (1883) Der Organismus der Arthrodelen Flagellaten. II. Hlfte. 30 pp & plates.