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Kahlilembus attenuatus (SMITH, 1897) FOISSNER, BERGER & KOHMANN, 1994, a hymenostome ciliate. Body shape is elongate and fusiform, the anterior end rounded and the posterior end strongly tapered. The oral apparatus is seen in these images on the organism's left extending posteriorly from the anterior end about one quarter of the body length. 3 adoral membranelles occupy the area just anterior to the cytostome and a prominent flag-like undulating membrane lines the right side of the cytostome. Somatic cilia are arranged in 8 to 10 longitudinal kineties. A spherical macronucleus is located centrally. The contractile vacuole (seen well here) is located just posterior to the midbody. Primarily bactiverous. From freshwater pond near Boise, Idaho. Oblique illumination.
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Portrait of the hymenostome ciliate, Cohnilembus verminus (Muller, 1786, Kahl, 1933). C. vermiformis, described in Carey?s key to species of Cohnilembus (Carey, P.G., Marine Interstitial Ciliates. P. 136. Chapman and Hall, London,1992), is probably a subjective synonym. The cell outline is a teardrop shape with a slender neck region extending about 2/3 cell length. The peristome area extends from the anterior end posteriorly past the mid-body. The cytostome is at the posterior end of the peristome. There are 2 membranelles running along the right edge if of the peristome. The more prominent one protrudes, flag-like, perpendicular to the long axis. Longitudinal somatic kineties (9 or 10) are uniformly spaced. There is a single long caudal cilium present. The single contractile vacuole is at the posterior terminus. There is a single central macronucleus and adjacent micronucleus. Collected from a commercial saltwater aquarium in Boise,Idaho August 2004. DIC optics. Image Credit: wbourland
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Portrait of the hymenostome ciliate, Cohnilembus verminus (Muller, 1786, Kahl, 1933). C. vermiformis, described in Careyâs key to species of Cohnilembus (Carey, P.G., Marine Interstitial Ciliates. P. 136. Chapman and Hall, London,1992), is probably a subjective synonym. The cell outline is a teardrop shape with a slender neck region extending about ½ cell length. The peristome area extends from the anterior end posteriorly to about mid-body. The cytostome is at the posterior end of the peristome. There are 2 membranelles running along the right edge if of the peristome. The more prominent one (seen here) protrudes, flag-like, perpendicular to the long axis. Longitudinal somatic kineties (9 or 100 are uniformly spaced. There is a single long caudal cilium present. The single contractile vacuole is at the posterior terminus. There is a single central macronucleus and adjacent micronucleus (not well-seen here). Collected from a commercial saltwater aquarium in Boise,Idaho August 2004. DIC optics.