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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Orcavia

Orcavia Tucolesco, 1962 (ref. ID; 2013)

Class Kinetofragminophora: Subclass Vestibulifera: Incertae sedis Order Trichostomatida (ref. ID; 2013)

[ref. ID; 2013]
Shape highly symmetrical, oblong in outline with rounded ends. Round in cross-section. Uniformly ciliated in 15-18 ciliary rows on each side. There is an oval apical vestibular aperture opening into a large oblong vestibulum which contains a fine sinusoidal flap or flange. Macronucleus in several parts. Found on one occasion in a stagnant pool in a cave (Romania).
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)