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Spirotrichea: Stichotrichida: Amphisiellidae

 Amphisiella sp.
Gourret and Roeser, 1888

Amphisiella Family: Cirri in 2 marginal, 1 frontoventral files; cirral files straight; more than 1 frontoventral file extends past middle of body (Illustrated Guide, 1985).
Genus: Elongate, some species with a pronouced head region; body often twistes and flexes during locomotion; three rows of ventral cirri (2 rows of marginal cirri, 1 row of ventral cirri from Curds, 1982); frontal & V-shaped transverse cirri; transverse cirri may be very long extending beyond the posterior (Carey, 1992).
Species:
Similar Genus ->> Holosticha; Balladyna; Urostyla

Amphisiella sp. or similar species, cell body μm long, μm wide, 4 transverse cirri, two ellipsoidal macronuclei, contractile vacuole midventral, x 640, Shimo-akaiwa, Matsubushi town, Saitama Pref., Japan, March 2003 by Y. Tsukii
scale 50 μm scale 100 μm scale 150 μm; x 400
Amphisiella Amphisiella Amphisiella Amphisiella Amphisiella Amphisiella Amphisiella Amphisiella Amphisiella

A. thiophaga (Kahl, 1928) Kahl, 1930-5: Elongate; 100 μm long; AZM 1/3 of the body length; transverse cirri project beyond the posterior; only 5 frontal cirri; two ovoid macronuclei; lateral stiff cirri absent (?) (Carey, 1992).

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