Dorsal view; in vivo

Descrição:

Dorsal view of the small marine dysteriid ciliate, Trochilia sigmoides (Dujardin,1841).This is the type species for the genus, Trochilia.The cell outline is ovoid. The dorsum is arched with deep S-shaped grooves.The ventral surface is flat. Ciliature is restricted to the ventral surface except for a small left anterior dorsal brush.The ventral cytostome is supported by two stout nematodesmata. There is a prominent posteroventral adhesive podite. There are two contractile vacuoles one of which is visible here.The macronucleus is hetereomerous.Collected from tide pools at Alkai Beach,Seattle, Washington 47°35'41.87" N;122° 23'17.57" W.January 2006.DIC.