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Diurella percellus Gosse, Left side of extended specimen.
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Diurella rousseleti Voigt. Side view of retracted specimen.
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Diurella tenuior Gosse. Larger specimen, dorsal or dorso-dextral view.
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Monostyla cornuta Ehr. Ventral view.
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Monostyla bulla Gosse. Dorsal view.
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Taphrocampa annulosa Gosse, as seen from above; body curved so that the food is not visible.
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Taphrocampa annulosa Gosse. Side view.
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Pleurotrocha parasitica n. sp. Ventral view.
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Pleurotrocha parasitica n. sp. Side view.
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Diurella rousseleti Voigt. Side view of retracted specimen.
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Elosa worrallii Lord, dorsal view, after Lord.
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Rattulus capucinus Werz. & Zach. Ventral view. The toe extends obliquely toward the observer, so that its full length is not seen.
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Rattulus capucinus Wierz. & Zach. Right side.
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Rattulus carinatus Lamarck. Dorsal view.
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Rattulus cylindricus Imhof. From Lake Bologoe, Russia, left side of retracted specimen, bearing egg.
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Rattulus cylindricus Imhof. Left side of extended specimen (from Germany).
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Rattulus cylindricus Imhof. Left side of specimen from East Harbor, Lake Erie.
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Rattulus elongatus Gosse. Left side.
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Rattulus gracilis Tessin. Ventral view, trophi extended.
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Rattulus latus Jennings. Ventral view of extended specimen.
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Rattulus latus Jennings. Dorsal view of lorica.
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Rattulus longiseta Schrank. Right side view.
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Rattulus longiseta Schrank. Ventral view of young specimen, retracted.
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Rattulus lophoessus Gosse. Dorsal view.