portrait
Left side view, with left undulating membrane removed to better show the shape of the right and inner undulating membranes.
Key to Schewiakoff's abbreviations:
b - Sensory bristle
ccv -- Canal of the contractile vacuole
cv -- Contractile vacuole
hy -- Hypostome
l -- Border, rim
l.Pr -- Left edge of the Peristome
mi -- Inner undulating membrane
mr -- Right undulating membrane
N -- Macronucleus
ncl -- Micronucleus
pe -- Excretory pore
r.Pr -- Right edge of peristome
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Lembadion bullinum
From the collection
Images from Schewiakoff, 1889
| Description of Lembadion bullinum: Peniculine ciliates, 120-200 micrometres in length. Plumply ovoid, with a vast buccal cavity, nearly as long as the entire body and about half as wide. Large membranelles on left side of the mouth opening; a smaller paroral on the right. Somatic ciliation holotrichous. Caudal cilia in a tuft, 40-50 micrometres long. Contractile vacuole dorsally positioned, connected to the ventral surface by a long tubule. Macronucleus reniform or sausage-shaped, subterminal. Eats diatoms, flagellates, ciliates, green algae. Marine, and fresh water, in shallow ponds (often in association with sulfur bacteria).
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